| 1 | # Copyright 1999-2005 Gentoo Foundation |
1 | # Copyright 1999-2009 Gentoo Foundation |
| 2 | # Distributed under the terms of the GNU General Public License v2 |
2 | # Distributed under the terms of the GNU General Public License v2 |
| 3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.101 2006/01/01 01:14:59 swegener Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.149 2011/02/01 05:41:30 dirtyepic Exp $ |
| 4 | |
4 | |
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5 | # @ECLASS: flag-o-matic.eclass |
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6 | # @MAINTAINER: |
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7 | # toolchain@gentoo.org |
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8 | # @BLURB: common functions to manipulate and query toolchain flags |
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9 | # @DESCRIPTION: |
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10 | # This eclass contains a suite of functions to help developers sanely |
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11 | # and safely manage toolchain flags in their builds. |
| 5 | |
12 | |
| 6 | # need access to emktemp() |
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| 7 | inherit eutils toolchain-funcs multilib |
13 | inherit eutils toolchain-funcs multilib |
| 8 | |
14 | |
| 9 | # |
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| 10 | #### filter-flags <flags> #### |
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| 11 | # Remove particular flags from C[XX]FLAGS |
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| 12 | # Matches only complete flags |
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| 13 | # |
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| 14 | #### append-flags <flags> #### |
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| 15 | # Add extra flags to your current C[XX]FLAGS |
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| 16 | # |
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| 17 | #### replace-flags <orig.flag> <new.flag> ### |
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| 18 | # Replace a flag by another one |
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| 19 | # |
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| 20 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
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| 21 | # Replace march/mcpu flags that specify <old.cpus> |
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| 22 | # with flags that specify <new.cpu> |
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| 23 | # |
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| 24 | #### is-flag <flag> #### |
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| 25 | # Returns "true" if flag is set in C[XX]FLAGS |
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| 26 | # Matches only complete a flag |
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| 27 | # |
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| 28 | #### strip-flags #### |
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| 29 | # Strip C[XX]FLAGS of everything except known |
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| 30 | # good options. |
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| 31 | # |
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| 32 | #### strip-unsupported-flags #### |
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| 33 | # Strip C[XX]FLAGS of any flags not supported by |
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| 34 | # installed version of gcc |
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| 35 | # |
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| 36 | #### get-flag <flag> #### |
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| 37 | # Find and echo the value for a particular flag |
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| 38 | # |
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| 39 | #### replace-sparc64-flags #### |
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| 40 | # Sets mcpu to v8 and uses the original value |
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| 41 | # as mtune if none specified. |
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| 42 | # |
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| 43 | #### filter-mfpmath <math types> #### |
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| 44 | # Remove specified math types from the fpmath specification |
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| 45 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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| 46 | # will leave the user with -mfpmath=386 |
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| 47 | # |
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| 48 | #### append-ldflags #### |
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| 49 | # Add extra flags to your current LDFLAGS |
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| 50 | # |
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| 51 | #### filter-ldflags <flags> #### |
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| 52 | # Remove particular flags from LDFLAGS |
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| 53 | # Matches only complete flags |
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| 54 | # |
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| 55 | #### fstack-flags #### |
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| 56 | # hooked function for hardened gcc that appends |
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| 57 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
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| 58 | # when a package is filtering -fstack-protector, -fstack-protector-all |
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| 59 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
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| 60 | # when only -fno-stack-protector is given |
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| 61 | # |
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| 62 | #### bindnow-flags #### |
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| 63 | # Returns the flags to enable "now" binding in the current selected linker. |
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| 64 | # |
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| 65 | ################ DEPRECATED functions ################ |
15 | ################ DEPRECATED functions ################ |
| 66 | # The following are still present to avoid breaking existing |
16 | # The following are still present to avoid breaking existing |
| 67 | # code more than necessary; however they are deprecated. Please |
17 | # code more than necessary; however they are deprecated. Please |
| 68 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
| 69 | # need to know which hardened techs are active in the compiler. |
19 | # need to know which hardened techs are active in the compiler. |
| 70 | # See bug #100974 |
20 | # See bug #100974 |
| 71 | # |
21 | # |
| 72 | #### has_hardened #### |
22 | # has_hardened |
| 73 | # Returns true if the compiler has 'Hardened' in its version string, |
23 | # has_pie |
| 74 | # (note; switched-spec vanilla compilers satisfy this condition) or |
24 | # has_pic |
| 75 | # the specs file name contains 'hardened'. |
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| 76 | # |
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| 77 | #### has_pie #### |
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| 78 | # Returns true if the compiler by default or with current CFLAGS |
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| 79 | # builds position-independent code. |
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| 80 | # |
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| 81 | #### has_pic #### |
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| 82 | # Returns true if the compiler by default or with current CFLAGS |
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| 83 | # builds position-independent code. |
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| 84 | # |
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| 85 | #### has_ssp_all #### |
25 | # has_ssp_all |
| 86 | # Returns true if the compiler by default or with current CFLAGS |
26 | # has_ssp |
| 87 | # generates stack smash protections for all functions |
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| 88 | # |
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| 89 | #### has_ssp #### |
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| 90 | # Returns true if the compiler by default or with current CFLAGS |
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| 91 | # generates stack smash protections for most vulnerable functions |
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| 92 | # |
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| 93 | |
27 | |
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28 | |
| 94 | # C[XX]FLAGS that we allow in strip-flags |
29 | # {C,CXX,F,FC}FLAGS that we allow in strip-flags |
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30 | # Note: shell globs and character lists are allowed |
| 95 | setup-allowed-flags() { |
31 | setup-allowed-flags() { |
| 96 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 97 | export ALLOWED_FLAGS="-pipe" |
33 | export ALLOWED_FLAGS="-pipe" |
| 98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
| 99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
| 100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow" |
| 101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
| 102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
38 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
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39 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
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40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
| 103 | fi |
41 | fi |
| 104 | # allow a bunch of flags that negate features / control ABI |
42 | # allow a bunch of flags that negate features / control ABI |
| 105 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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44 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer" |
| 106 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
| 107 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \ |
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47 | -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \ |
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48 | -mno-popcnt -mno-abm \ |
| 108 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
49 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \ |
| 109 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
50 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
| 110 | -mieee -mieee-with-inexact \ |
51 | -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \ |
| 111 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
52 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
| 112 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
53 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
| 113 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
54 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
| 114 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
55 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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56 | -msecure-plt -m*-toc -D* -U*" |
| 115 | |
57 | |
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58 | # 4.5 |
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59 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp" |
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60 | # 4.6 |
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61 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fsgsbase -mno-rdrnd -mno-f16c \ |
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62 | -mno-bmi -mno-tbm" |
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63 | |
| 116 | # C[XX]FLAGS that we are think is ok, but needs testing |
64 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
| 117 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
65 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 118 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
66 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 119 | return 0 |
67 | return 0 |
| 120 | } |
68 | } |
| 121 | |
69 | |
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70 | # inverted filters for hardened compiler. This is trying to unpick |
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71 | # the hardened compiler defaults. |
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72 | _filter-hardened() { |
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73 | local f |
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74 | for f in "$@" ; do |
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75 | case "${f}" in |
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76 | # Ideally we should only concern ourselves with PIE flags, |
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77 | # not -fPIC or -fpic, but too many places filter -fPIC without |
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78 | # thinking about -fPIE. |
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79 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
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80 | gcc-specs-pie || continue |
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81 | is-flagq -nopie || append-flags -nopie;; |
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82 | -fstack-protector) |
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83 | gcc-specs-ssp || continue |
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84 | is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);; |
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85 | -fstack-protector-all) |
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86 | gcc-specs-ssp-to-all || continue |
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87 | is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);; |
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88 | -fno-strict-overflow) |
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89 | gcc-specs-nostrict || continue |
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90 | is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);; |
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91 | esac |
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92 | done |
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93 | } |
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94 | |
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95 | # Remove occurrences of strings from variable given in $1 |
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96 | # Strings removed are matched as globs, so for example |
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97 | # '-O*' would remove -O1, -O2 etc. |
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98 | _filter-var() { |
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99 | local f x VAR VAL |
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100 | declare -a new |
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101 | |
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102 | VAR=$1 |
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103 | shift |
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104 | eval VAL=\${${VAR}} |
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105 | for f in ${VAL}; do |
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106 | for x in "$@"; do |
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107 | # Note this should work with globs like -O* |
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108 | [[ ${f} == ${x} ]] && continue 2 |
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109 | done |
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110 | eval new\[\${\#new\[@]}]=\${f} |
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111 | done |
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112 | eval export ${VAR}=\${new\[*]} |
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113 | } |
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114 | |
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115 | # @FUNCTION: filter-flags |
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116 | # @USAGE: <flags> |
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117 | # @DESCRIPTION: |
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118 | # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. |
| 122 | filter-flags() { |
119 | filter-flags() { |
| 123 | local x f fset |
120 | _filter-hardened "$@" |
| 124 | declare -a new_CFLAGS new_CXXFLAGS |
121 | _filter-var CFLAGS "$@" |
| 125 | |
122 | _filter-var CPPFLAGS "$@" |
| 126 | for x in "$@" ; do |
123 | _filter-var CXXFLAGS "$@" |
| 127 | case "${x}" in |
124 | _filter-var FFLAGS "$@" |
| 128 | -fPIC|-fpic|-fPIE|-fpie|-pie) |
125 | _filter-var FCFLAGS "$@" |
| 129 | append-flags `test_flag -fno-pie`;; |
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| 130 | -fstack-protector|-fstack-protector-all) |
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| 131 | fstack-flags;; |
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| 132 | esac |
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| 133 | done |
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| 134 | |
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| 135 | for fset in CFLAGS CXXFLAGS; do |
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| 136 | # Looping over the flags instead of using a global |
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| 137 | # substitution ensures that we're working with flag atoms. |
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| 138 | # Otherwise globs like -O* have the potential to wipe out the |
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| 139 | # list of flags. |
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| 140 | for f in ${!fset}; do |
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| 141 | for x in "$@"; do |
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| 142 | # Note this should work with globs like -O* |
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| 143 | [[ ${f} == ${x} ]] && continue 2 |
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| 144 | done |
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| 145 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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| 146 | done |
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| 147 | eval export ${fset}=\${new_${fset}\[*]} |
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| 148 | done |
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| 149 | |
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| 150 | return 0 |
126 | return 0 |
| 151 | } |
127 | } |
| 152 | |
128 | |
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129 | # @FUNCTION: filter-lfs-flags |
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130 | # @DESCRIPTION: |
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131 | # Remove flags that enable Large File Support. |
| 153 | filter-lfs-flags() { |
132 | filter-lfs-flags() { |
| 154 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
133 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 155 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
134 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 156 | } |
135 | } |
| 157 | |
136 | |
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137 | # @FUNCTION: append-cppflags |
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138 | # @USAGE: <flags> |
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139 | # @DESCRIPTION: |
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140 | # Add extra <flags> to the current CPPFLAGS. |
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141 | append-cppflags() { |
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142 | [[ -z $* ]] && return 0 |
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143 | export CPPFLAGS="${CPPFLAGS} $*" |
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144 | return 0 |
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145 | } |
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146 | |
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147 | # @FUNCTION: append-cflags |
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148 | # @USAGE: <flags> |
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149 | # @DESCRIPTION: |
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150 | # Add extra <flags> to the current CFLAGS. |
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151 | append-cflags() { |
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152 | [[ -z $* ]] && return 0 |
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153 | export CFLAGS="${CFLAGS} $*" |
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154 | return 0 |
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155 | } |
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156 | |
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157 | # @FUNCTION: append-cxxflags |
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158 | # @USAGE: <flags> |
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159 | # @DESCRIPTION: |
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160 | # Add extra <flags> to the current CXXFLAGS. |
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161 | append-cxxflags() { |
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162 | [[ -z $* ]] && return 0 |
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163 | export CXXFLAGS="${CXXFLAGS} $*" |
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164 | return 0 |
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165 | } |
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166 | |
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167 | # @FUNCTION: append-fflags |
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168 | # @USAGE: <flags> |
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169 | # @DESCRIPTION: |
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170 | # Add extra <flags> to the current {F,FC}FLAGS. |
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171 | append-fflags() { |
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172 | [[ -z $* ]] && return 0 |
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173 | export FFLAGS="${FFLAGS} $*" |
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174 | export FCFLAGS="${FCFLAGS} $*" |
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175 | return 0 |
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176 | } |
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177 | |
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178 | # @FUNCTION: append-lfs-flags |
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179 | # @DESCRIPTION: |
|
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180 | # Add flags that enable Large File Support. |
| 158 | append-lfs-flags() { |
181 | append-lfs-flags() { |
| 159 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
182 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 160 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
183 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 161 | } |
184 | } |
| 162 | |
185 | |
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186 | # @FUNCTION: append-flags |
|
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187 | # @USAGE: <flags> |
|
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188 | # @DESCRIPTION: |
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189 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
| 163 | append-flags() { |
190 | append-flags() { |
| 164 | [[ -z $* ]] && return 0 |
191 | [[ -z $* ]] && return 0 |
| 165 | export CFLAGS="${CFLAGS} $*" |
192 | append-cflags "$@" |
| 166 | export CXXFLAGS="${CXXFLAGS} $*" |
193 | append-cxxflags "$@" |
| 167 | [ -n "`is-flag -fno-stack-protector`" -o \ |
194 | append-fflags "$@" |
| 168 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
|
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| 169 | return 0 |
195 | return 0 |
| 170 | } |
196 | } |
| 171 | |
197 | |
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198 | # @FUNCTION: replace-flags |
|
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199 | # @USAGE: <old> <new> |
|
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200 | # @DESCRIPTION: |
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201 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
| 172 | replace-flags() { |
202 | replace-flags() { |
| 173 | [[ $# != 2 ]] \ |
203 | [[ $# != 2 ]] \ |
| 174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
204 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 175 | && die "replace-flags takes 2 arguments, not $#" |
205 | && die "replace-flags takes 2 arguments, not $#" |
| 176 | |
206 | |
| 177 | local f fset |
207 | local f fset |
| 178 | declare -a new_CFLAGS new_CXXFLAGS |
208 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
| 179 | |
209 | |
| 180 | for fset in CFLAGS CXXFLAGS; do |
210 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
| 181 | # Looping over the flags instead of using a global |
211 | # Looping over the flags instead of using a global |
| 182 | # substitution ensures that we're working with flag atoms. |
212 | # substitution ensures that we're working with flag atoms. |
| 183 | # Otherwise globs like -O* have the potential to wipe out the |
213 | # Otherwise globs like -O* have the potential to wipe out the |
| 184 | # list of flags. |
214 | # list of flags. |
| 185 | for f in ${!fset}; do |
215 | for f in ${!fset}; do |
| … | |
… | |
| 191 | done |
221 | done |
| 192 | |
222 | |
| 193 | return 0 |
223 | return 0 |
| 194 | } |
224 | } |
| 195 | |
225 | |
|
|
226 | # @FUNCTION: replace-cpu-flags |
|
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227 | # @USAGE: <old> <new> |
|
|
228 | # @DESCRIPTION: |
|
|
229 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
|
|
230 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
| 196 | replace-cpu-flags() { |
231 | replace-cpu-flags() { |
| 197 | local newcpu="$#" ; newcpu="${!newcpu}" |
232 | local newcpu="$#" ; newcpu="${!newcpu}" |
| 198 | while [ $# -gt 1 ] ; do |
233 | while [ $# -gt 1 ] ; do |
| 199 | # quote to make sure that no globbing is done (particularly on |
234 | # quote to make sure that no globbing is done (particularly on |
| 200 | # ${oldcpu} prior to calling replace-flags |
235 | # ${oldcpu}) prior to calling replace-flags |
| 201 | replace-flags "-march=${1}" "-march=${newcpu}" |
236 | replace-flags "-march=${1}" "-march=${newcpu}" |
| 202 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
237 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
| 203 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
238 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
| 204 | shift |
239 | shift |
| 205 | done |
240 | done |
| 206 | return 0 |
241 | return 0 |
| 207 | } |
242 | } |
| 208 | |
243 | |
|
|
244 | _is_flagq() { |
|
|
245 | local x |
|
|
246 | for x in ${!1} ; do |
|
|
247 | [[ ${x} == $2 ]] && return 0 |
|
|
248 | done |
|
|
249 | return 1 |
|
|
250 | } |
|
|
251 | |
|
|
252 | # @FUNCTION: is-flagq |
|
|
253 | # @USAGE: <flag> |
|
|
254 | # @DESCRIPTION: |
|
|
255 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
|
|
256 | is-flagq() { |
|
|
257 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
|
|
258 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
|
|
259 | } |
|
|
260 | |
|
|
261 | # @FUNCTION: is-flag |
|
|
262 | # @USAGE: <flag> |
|
|
263 | # @DESCRIPTION: |
|
|
264 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
| 209 | is-flag() { |
265 | is-flag() { |
| 210 | local x |
266 | is-flagq "$@" && echo true |
| 211 | |
|
|
| 212 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
|
|
| 213 | # Note this should work with globs like -mcpu=ultrasparc* |
|
|
| 214 | if [[ ${x} == ${1} ]]; then |
|
|
| 215 | echo true |
|
|
| 216 | return 0 |
|
|
| 217 | fi |
|
|
| 218 | done |
|
|
| 219 | return 1 |
|
|
| 220 | } |
267 | } |
| 221 | |
268 | |
|
|
269 | # @FUNCTION: is-ldflagq |
|
|
270 | # @USAGE: <flag> |
|
|
271 | # @DESCRIPTION: |
|
|
272 | # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs. |
|
|
273 | is-ldflagq() { |
|
|
274 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
|
|
275 | _is_flagq LDFLAGS $1 |
|
|
276 | } |
|
|
277 | |
|
|
278 | # @FUNCTION: is-ldflag |
|
|
279 | # @USAGE: <flag> |
|
|
280 | # @DESCRIPTION: |
|
|
281 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
|
|
282 | is-ldflag() { |
|
|
283 | is-ldflagq "$@" && echo true |
|
|
284 | } |
|
|
285 | |
|
|
286 | # @FUNCTION: filter-mfpmath |
|
|
287 | # @USAGE: <math types> |
|
|
288 | # @DESCRIPTION: |
|
|
289 | # Remove specified math types from the fpmath flag. For example, if the user |
|
|
290 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
|
|
291 | # -mfpmath=386. |
| 222 | filter-mfpmath() { |
292 | filter-mfpmath() { |
| 223 | local orig_mfpmath new_math prune_math |
293 | local orig_mfpmath new_math prune_math |
| 224 | |
294 | |
| 225 | # save the original -mfpmath flag |
295 | # save the original -mfpmath flag |
| 226 | orig_mfpmath="`get-flag -mfpmath`" |
296 | orig_mfpmath=$(get-flag -mfpmath) |
| 227 | # get the value of the current -mfpmath flag |
297 | # get the value of the current -mfpmath flag |
| 228 | new_math=" `get-flag mfpmath | tr , ' '` " |
298 | new_math=$(get-flag mfpmath) |
|
|
299 | new_math=" ${new_math//,/ } " |
| 229 | # figure out which math values are to be removed |
300 | # figure out which math values are to be removed |
| 230 | prune_math="" |
301 | prune_math="" |
| 231 | for prune_math in "$@" ; do |
302 | for prune_math in "$@" ; do |
| 232 | new_math="${new_math/ ${prune_math} / }" |
303 | new_math=${new_math/ ${prune_math} / } |
| 233 | done |
304 | done |
| 234 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
305 | new_math=$(echo ${new_math}) |
|
|
306 | new_math=${new_math// /,} |
| 235 | |
307 | |
| 236 | if [ -z "${new_math}" ] ; then |
308 | if [[ -z ${new_math} ]] ; then |
| 237 | # if we're removing all user specified math values are |
309 | # if we're removing all user specified math values are |
| 238 | # slated for removal, then we just filter the flag |
310 | # slated for removal, then we just filter the flag |
| 239 | filter-flags ${orig_mfpmath} |
311 | filter-flags ${orig_mfpmath} |
| 240 | else |
312 | else |
| 241 | # if we only want to filter some of the user specified |
313 | # if we only want to filter some of the user specified |
| … | |
… | |
| 243 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
315 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
| 244 | fi |
316 | fi |
| 245 | return 0 |
317 | return 0 |
| 246 | } |
318 | } |
| 247 | |
319 | |
|
|
320 | # @FUNCTION: strip-flags |
|
|
321 | # @DESCRIPTION: |
|
|
322 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
| 248 | strip-flags() { |
323 | strip-flags() { |
| 249 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
324 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
| 250 | |
325 | |
| 251 | setup-allowed-flags |
326 | setup-allowed-flags |
| 252 | |
327 | |
| 253 | local NEW_CFLAGS="" |
328 | local NEW_CFLAGS="" |
| 254 | local NEW_CXXFLAGS="" |
329 | local NEW_CXXFLAGS="" |
|
|
330 | local NEW_FFLAGS="" |
|
|
331 | local NEW_FCFLAGS="" |
| 255 | |
332 | |
| 256 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
333 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 257 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
334 | if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then |
| 258 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
335 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 259 | fi |
336 | fi |
| 260 | |
337 | |
| 261 | set -f # disable pathname expansion |
338 | set -f # disable pathname expansion |
| 262 | |
339 | |
| … | |
… | |
| 278 | break |
355 | break |
| 279 | fi |
356 | fi |
| 280 | done |
357 | done |
| 281 | done |
358 | done |
| 282 | |
359 | |
|
|
360 | for x in ${FFLAGS}; do |
|
|
361 | for y in ${ALLOWED_FLAGS}; do |
|
|
362 | flag=${x%%=*} |
|
|
363 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
364 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
365 | break |
|
|
366 | fi |
|
|
367 | done |
|
|
368 | done |
|
|
369 | |
|
|
370 | for x in ${FCFLAGS}; do |
|
|
371 | for y in ${ALLOWED_FLAGS}; do |
|
|
372 | flag=${x%%=*} |
|
|
373 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
374 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
375 | break |
|
|
376 | fi |
|
|
377 | done |
|
|
378 | done |
|
|
379 | |
| 283 | # In case we filtered out all optimization flags fallback to -O2 |
380 | # In case we filtered out all optimization flags fallback to -O2 |
| 284 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
381 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
| 285 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
382 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
| 286 | fi |
383 | fi |
| 287 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
384 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
| 288 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
385 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
| 289 | fi |
386 | fi |
|
|
387 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
388 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
389 | fi |
|
|
390 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
391 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
392 | fi |
| 290 | |
393 | |
| 291 | set +f # re-enable pathname expansion |
394 | set +f # re-enable pathname expansion |
| 292 | |
395 | |
| 293 | export CFLAGS="${NEW_CFLAGS}" |
396 | export CFLAGS="${NEW_CFLAGS}" |
| 294 | export CXXFLAGS="${NEW_CXXFLAGS}" |
397 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
398 | export FFLAGS="${NEW_FFLAGS}" |
|
|
399 | export FCFLAGS="${NEW_FCFLAGS}" |
| 295 | return 0 |
400 | return 0 |
| 296 | } |
401 | } |
| 297 | |
402 | |
| 298 | test-flag-PROG() { |
403 | test-flag-PROG() { |
| 299 | local comp=$1 |
404 | local comp=$1 |
| … | |
… | |
| 305 | local PROG=$(tc-get${comp}) |
410 | local PROG=$(tc-get${comp}) |
| 306 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
411 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
| 307 | > /dev/null 2>&1 |
412 | > /dev/null 2>&1 |
| 308 | } |
413 | } |
| 309 | |
414 | |
| 310 | # Returns true if C compiler support given flag |
415 | # @FUNCTION: test-flag-CC |
|
|
416 | # @USAGE: <flag> |
|
|
417 | # @DESCRIPTION: |
|
|
418 | # Returns shell true if <flag> is supported by the C compiler, else returns shell false. |
| 311 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
419 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
| 312 | |
420 | |
| 313 | # Returns true if C++ compiler support given flag |
421 | # @FUNCTION: test-flag-CXX |
|
|
422 | # @USAGE: <flag> |
|
|
423 | # @DESCRIPTION: |
|
|
424 | # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. |
| 314 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
425 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
426 | |
|
|
427 | # @FUNCTION: test-flag-F77 |
|
|
428 | # @USAGE: <flag> |
|
|
429 | # @DESCRIPTION: |
|
|
430 | # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false. |
|
|
431 | test-flag-F77() { test-flag-PROG "F77" "$1"; } |
|
|
432 | |
|
|
433 | # @FUNCTION: test-flag-FC |
|
|
434 | # @USAGE: <flag> |
|
|
435 | # @DESCRIPTION: |
|
|
436 | # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false. |
|
|
437 | test-flag-FC() { test-flag-PROG "FC" "$1"; } |
| 315 | |
438 | |
| 316 | test-flags-PROG() { |
439 | test-flags-PROG() { |
| 317 | local comp=$1 |
440 | local comp=$1 |
| 318 | local flags |
441 | local flags |
| 319 | local x |
442 | local x |
| 320 | |
443 | |
| 321 | shift |
444 | shift |
| 322 | |
445 | |
| 323 | [[ -z ${comp} ]] && \ |
446 | [[ -z ${comp} ]] && return 1 |
| 324 | return 1 |
|
|
| 325 | |
447 | |
|
|
448 | x="" |
| 326 | for x in "$@" ; do |
449 | for x in "$@" ; do |
| 327 | test-flag-${comp} "${x}" && flags="${flags} ${x}" |
450 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
| 328 | done |
451 | done |
| 329 | |
452 | |
| 330 | echo "${flags}" |
453 | echo "${flags}" |
| 331 | |
454 | |
| 332 | # Just bail if we dont have any flags |
455 | # Just bail if we dont have any flags |
| 333 | [[ -n ${flags} ]] |
456 | [[ -n ${flags} ]] |
| 334 | } |
457 | } |
| 335 | |
458 | |
| 336 | # Returns (echo's) the given flags supported by the C compiler |
459 | # @FUNCTION: test-flags-CC |
|
|
460 | # @USAGE: <flags> |
|
|
461 | # @DESCRIPTION: |
|
|
462 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
| 337 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
463 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
| 338 | |
464 | |
| 339 | # Returns (echo's) the given flags supported by the C++ compiler |
465 | # @FUNCTION: test-flags-CXX |
|
|
466 | # @USAGE: <flags> |
|
|
467 | # @DESCRIPTION: |
|
|
468 | # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. |
| 340 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
469 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
| 341 | |
470 | |
|
|
471 | # @FUNCTION: test-flags-F77 |
|
|
472 | # @USAGE: <flags> |
|
|
473 | # @DESCRIPTION: |
|
|
474 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
475 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
476 | |
|
|
477 | # @FUNCTION: test-flags-FC |
|
|
478 | # @USAGE: <flags> |
|
|
479 | # @DESCRIPTION: |
|
|
480 | # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false. |
|
|
481 | test-flags-FC() { test-flags-PROG "FC" "$@"; } |
|
|
482 | |
|
|
483 | # @FUNCTION: test-flags |
|
|
484 | # @USAGE: <flags> |
|
|
485 | # @DESCRIPTION: |
| 342 | # Short-hand that should hopefully work for both C and C++ compiler, but |
486 | # Short-hand that should hopefully work for both C and C++ compiler, but |
| 343 | # its really only present due to the append-flags() abomination. |
487 | # its really only present due to the append-flags() abomination. |
| 344 | test-flags() { test-flags-CC "$@"; } |
488 | test-flags() { test-flags-CC "$@"; } |
| 345 | |
489 | |
| 346 | # Depriciated, use test-flags() |
490 | # @FUNCTION: test_flag |
|
|
491 | # @DESCRIPTION: |
|
|
492 | # DEPRICIATED, use test-flags() |
| 347 | test_flag() { |
493 | test_flag() { |
| 348 | addwrite "/dev/stderr" |
|
|
| 349 | ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr |
494 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 350 | |
495 | |
| 351 | test-flags-CC "$@" |
496 | test-flags-CC "$@" |
| 352 | } |
497 | } |
| 353 | |
498 | |
|
|
499 | # @FUNCTION: test_version_info |
|
|
500 | # @USAGE: <version> |
|
|
501 | # @DESCRIPTION: |
|
|
502 | # Returns shell true if the current C compiler version matches <version>, else returns shell false. |
|
|
503 | # Accepts shell globs. |
| 354 | test_version_info() { |
504 | test_version_info() { |
| 355 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
505 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 356 | return 0 |
506 | return 0 |
| 357 | else |
507 | else |
| 358 | return 1 |
508 | return 1 |
| 359 | fi |
509 | fi |
| 360 | } |
510 | } |
| 361 | |
511 | |
|
|
512 | # @FUNCTION: strip-unsupported-flags |
|
|
513 | # @DESCRIPTION: |
|
|
514 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
| 362 | strip-unsupported-flags() { |
515 | strip-unsupported-flags() { |
| 363 | local x NEW_CFLAGS NEW_CXXFLAGS |
516 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
| 364 | |
517 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
| 365 | for x in ${CFLAGS} ; do |
518 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
| 366 | NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})" |
519 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
| 367 | done |
|
|
| 368 | for x in ${CXXFLAGS} ; do |
|
|
| 369 | NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})" |
|
|
| 370 | done |
|
|
| 371 | |
|
|
| 372 | export CFLAGS=${NEW_CFLAGS} |
|
|
| 373 | export CXXFLAGS=${NEW_CXXFLAGS} |
|
|
| 374 | } |
520 | } |
| 375 | |
521 | |
|
|
522 | # @FUNCTION: get-flag |
|
|
523 | # @USAGE: <flag> |
|
|
524 | # @DESCRIPTION: |
|
|
525 | # Find and echo the value for a particular flag. Accepts shell globs. |
| 376 | get-flag() { |
526 | get-flag() { |
| 377 | local f findflag="$1" |
527 | local f findflag="$1" |
| 378 | |
528 | |
| 379 | # this code looks a little flaky but seems to work for |
529 | # this code looks a little flaky but seems to work for |
| 380 | # everything we want ... |
530 | # everything we want ... |
| 381 | # for example, if CFLAGS="-march=i686": |
531 | # for example, if CFLAGS="-march=i686": |
| 382 | # `get-flag -march` == "-march=i686" |
532 | # `get-flag -march` == "-march=i686" |
| 383 | # `get-flag march` == "i686" |
533 | # `get-flag march` == "i686" |
| 384 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
534 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
| 385 | if [ "${f/${findflag}}" != "${f}" ] ; then |
535 | if [ "${f/${findflag}}" != "${f}" ] ; then |
| 386 | printf "%s\n" "${f/-${findflag}=}" |
536 | printf "%s\n" "${f/-${findflag}=}" |
| 387 | return 0 |
537 | return 0 |
| 388 | fi |
538 | fi |
| 389 | done |
539 | done |
| 390 | return 1 |
540 | return 1 |
| 391 | } |
541 | } |
| 392 | |
542 | |
|
|
543 | # @FUNCTION: has_hardened |
|
|
544 | # @DESCRIPTION: |
| 393 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
545 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 394 | has_hardened() { |
546 | has_hardened() { |
| 395 | addwrite "/dev/stderr" |
|
|
| 396 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \ |
547 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
| 397 | >/dev/stderr |
|
|
| 398 | |
548 | |
| 399 | test_version_info Hardened && return 0 |
549 | test_version_info Hardened && return 0 |
| 400 | # The specs file wont exist unless gcc has GCC_SPECS support |
550 | # The specs file wont exist unless gcc has GCC_SPECS support |
| 401 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
551 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 402 | } |
552 | } |
| 403 | |
553 | |
|
|
554 | # @FUNCTION: has_pic |
|
|
555 | # @DESCRIPTION: |
| 404 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
556 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 405 | # indicate whether PIC is set |
557 | # indicate whether PIC is set |
| 406 | has_pic() { |
558 | has_pic() { |
| 407 | addwrite "/dev/stderr" |
|
|
| 408 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr |
559 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 409 | |
560 | |
| 410 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
561 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
| 411 | ${CFLAGS/-fpic} != ${CFLAGS} || \ |
562 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
| 412 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]] |
563 | gcc-specs-pie |
| 413 | } |
564 | } |
| 414 | |
565 | |
|
|
566 | # @FUNCTION: has_pie |
|
|
567 | # @DESCRIPTION: |
| 415 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
568 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 416 | # indicate whether PIE is set |
569 | # indicate whether PIE is set |
| 417 | has_pie() { |
570 | has_pie() { |
| 418 | addwrite "/dev/stderr" |
|
|
| 419 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr |
571 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
| 420 | |
572 | |
| 421 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
573 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
| 422 | ${CFLAGS/-fpie} != ${CFLAGS} || \ |
574 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
| 423 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \ |
575 | gcc-specs-pie |
| 424 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]] |
|
|
| 425 | # test PIC while waiting for specs to be updated to generate __PIE__ |
|
|
| 426 | } |
576 | } |
| 427 | |
577 | |
|
|
578 | # @FUNCTION: has_ssp_all |
|
|
579 | # @DESCRIPTION: |
| 428 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
580 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 429 | # indicate whether code for SSP is being generated for all functions |
581 | # indicate whether code for SSP is being generated for all functions |
| 430 | has_ssp_all() { |
582 | has_ssp_all() { |
| 431 | addwrite "/dev/stderr" |
|
|
| 432 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr |
583 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
| 433 | |
584 | |
| 434 | # note; this matches only -fstack-protector-all |
585 | # note; this matches only -fstack-protector-all |
| 435 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
586 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
| 436 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
587 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
| 437 | gcc-specs-ssp |
588 | gcc-specs-ssp-to-all |
| 438 | } |
589 | } |
| 439 | |
590 | |
|
|
591 | # @FUNCTION: has_ssp |
|
|
592 | # @DESCRIPTION: |
| 440 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
593 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 441 | # indicate whether code for SSP is being generated |
594 | # indicate whether code for SSP is being generated |
| 442 | has_ssp() { |
595 | has_ssp() { |
| 443 | addwrite "/dev/stderr" |
|
|
| 444 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr |
596 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
| 445 | |
597 | |
| 446 | # note; this matches both -fstack-protector and -fstack-protector-all |
598 | # note; this matches both -fstack-protector and -fstack-protector-all |
| 447 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
599 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
| 448 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
600 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
| 449 | gcc-specs-ssp |
601 | gcc-specs-ssp |
| 450 | } |
602 | } |
| 451 | |
603 | |
|
|
604 | # @FUNCTION: has_m64 |
|
|
605 | # @DESCRIPTION: |
|
|
606 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
607 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
|
|
608 | # return code is 0, else the return code is 1. |
| 452 | has_m64() { |
609 | has_m64() { |
| 453 | # this doesnt test if the flag is accepted, it tests if the flag |
610 | # this doesnt test if the flag is accepted, it tests if the flag |
| 454 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
611 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 455 | # please dont replace this function with test_flag in some future |
612 | # please dont replace this function with test_flag in some future |
| 456 | # clean-up! |
613 | # clean-up! |
| … | |
… | |
| 463 | rm -f "${temp}".c |
620 | rm -f "${temp}".c |
| 464 | [[ ${ret} != 1 ]] && return 0 |
621 | [[ ${ret} != 1 ]] && return 0 |
| 465 | return 1 |
622 | return 1 |
| 466 | } |
623 | } |
| 467 | |
624 | |
|
|
625 | # @FUNCTION: has_m32 |
|
|
626 | # @DESCRIPTION: |
|
|
627 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
628 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
629 | # code is 0, else return code is 1. |
| 468 | has_m32() { |
630 | has_m32() { |
| 469 | # this doesnt test if the flag is accepted, it tests if the flag |
631 | # this doesnt test if the flag is accepted, it tests if the flag |
| 470 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
632 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 471 | # please dont replace this function with test_flag in some future |
633 | # please dont replace this function with test_flag in some future |
| 472 | # clean-up! |
634 | # clean-up! |
| … | |
… | |
| 481 | rm -f "${temp}".c |
643 | rm -f "${temp}".c |
| 482 | [[ ${ret} != 1 ]] && return 0 |
644 | [[ ${ret} != 1 ]] && return 0 |
| 483 | return 1 |
645 | return 1 |
| 484 | } |
646 | } |
| 485 | |
647 | |
|
|
648 | # @FUNCTION: replace-sparc64-flags |
|
|
649 | # @DESCRIPTION: |
|
|
650 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
| 486 | replace-sparc64-flags() { |
651 | replace-sparc64-flags() { |
| 487 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
652 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 488 | |
653 | |
| 489 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
654 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 490 | for x in ${SPARC64_CPUS}; do |
655 | for x in ${SPARC64_CPUS}; do |
| 491 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
656 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 492 | done |
657 | done |
| 493 | else |
658 | else |
| 494 | for x in ${SPARC64_CPUS}; do |
659 | for x in ${SPARC64_CPUS}; do |
| 495 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
660 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 496 | done |
661 | done |
| 497 | fi |
662 | fi |
| 498 | |
663 | |
| 499 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
664 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
| 500 | for x in ${SPARC64_CPUS}; do |
665 | for x in ${SPARC64_CPUS}; do |
| 501 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
666 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 502 | done |
667 | done |
| 503 | else |
668 | else |
| 504 | for x in ${SPARC64_CPUS}; do |
669 | for x in ${SPARC64_CPUS}; do |
| 505 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
670 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 506 | done |
671 | done |
| 507 | fi |
672 | fi |
| 508 | |
673 | |
| 509 | export CFLAGS CXXFLAGS |
674 | export CFLAGS CXXFLAGS |
| 510 | } |
675 | } |
| 511 | |
676 | |
|
|
677 | # @FUNCTION: append-libs |
|
|
678 | # @USAGE: <libs> |
|
|
679 | # @DESCRIPTION: |
|
|
680 | # Add extra <libs> to the current LIBS. |
|
|
681 | append-libs() { |
|
|
682 | [[ -z $* ]] && return 0 |
|
|
683 | local flag |
|
|
684 | for flag in "$@"; do |
|
|
685 | [[ ${flag} == -l* ]] && flag=${flag#-l} |
|
|
686 | export LIBS="${LIBS} -l${flag}" |
|
|
687 | done |
|
|
688 | |
|
|
689 | return 0 |
|
|
690 | } |
|
|
691 | |
|
|
692 | # @FUNCTION: append-ldflags |
|
|
693 | # @USAGE: <flags> |
|
|
694 | # @DESCRIPTION: |
|
|
695 | # Add extra <flags> to the current LDFLAGS. |
| 512 | append-ldflags() { |
696 | append-ldflags() { |
|
|
697 | [[ -z $* ]] && return 0 |
|
|
698 | local flag |
|
|
699 | for flag in "$@"; do |
|
|
700 | [[ ${flag} == -l* ]] && \ |
|
|
701 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
|
|
702 | done |
|
|
703 | |
| 513 | export LDFLAGS="${LDFLAGS} $*" |
704 | export LDFLAGS="${LDFLAGS} $*" |
| 514 | return 0 |
705 | return 0 |
| 515 | } |
706 | } |
| 516 | |
707 | |
|
|
708 | # @FUNCTION: filter-ldflags |
|
|
709 | # @USAGE: <flags> |
|
|
710 | # @DESCRIPTION: |
|
|
711 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
| 517 | filter-ldflags() { |
712 | filter-ldflags() { |
| 518 | local x |
713 | _filter-var LDFLAGS "$@" |
|
|
714 | return 0 |
|
|
715 | } |
| 519 | |
716 | |
| 520 | # we do this fancy spacing stuff so as to not filter |
717 | # @FUNCTION: raw-ldflags |
| 521 | # out part of a flag ... we want flag atoms ! :D |
718 | # @USAGE: <flags> |
| 522 | LDFLAGS=" ${LDFLAGS} " |
719 | # @DESCRIPTION: |
|
|
720 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
|
|
721 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
|
|
722 | # to gcc where it needs the '-Wl,'. |
|
|
723 | raw-ldflags() { |
|
|
724 | local x input="$@" |
|
|
725 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
726 | set -- |
| 523 | for x in "$@" ; do |
727 | for x in ${input} ; do |
| 524 | LDFLAGS=${LDFLAGS// ${x} / } |
728 | x=${x#-Wl,} |
|
|
729 | set -- "$@" ${x//,/ } |
| 525 | done |
730 | done |
| 526 | [[ -z ${LDFLAGS// } ]] \ |
731 | echo "$@" |
| 527 | && LDFLAGS="" \ |
|
|
| 528 | || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2} |
|
|
| 529 | export LDFLAGS |
|
|
| 530 | return 0 |
|
|
| 531 | } |
732 | } |
| 532 | |
733 | |
| 533 | fstack-flags() { |
734 | # @FUNCTION: no-as-needed |
| 534 | if gcc-specs-ssp; then |
735 | # @RETURN: Flag to disable asneeded behavior for use with append-ldflags. |
| 535 | [ -z "`is-flag -fno-stack-protector`" ] && |
736 | no-as-needed() { |
| 536 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
737 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
| 537 | fi |
738 | *GNU*) # GNU ld |
| 538 | return 0 |
739 | echo "-Wl,--no-as-needed" ;; |
|
|
740 | esac |
| 539 | } |
741 | } |
| 540 | |
742 | |
| 541 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
743 | # Some tests for when we screw with things and want to make |
| 542 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
744 | # sure we didn't break anything |
| 543 | # fixes. |
745 | #TESTS() { |
|
|
746 | # CFLAGS="-a -b -c=1" |
|
|
747 | # CXXFLAGS="-x -y -z=2" |
|
|
748 | # LDFLAGS="-l -m -n=3" |
| 544 | # |
749 | # |
| 545 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
750 | # die() { exit 1; } |
| 546 | gcc2-flags() { |
751 | # (is-flag 1 2 3) && die |
| 547 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
752 | # (is-ldflag 1 2 3) && die |
| 548 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
753 | # |
| 549 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
754 | # is-flagq -l && die |
| 550 | fi |
755 | # is-ldflagq -a && die |
| 551 | |
756 | # is-flagq -a || die |
| 552 | replace-cpu-flags k6-{2,3} k6 |
757 | # is-flagq -x || die |
| 553 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
758 | # is-ldflagq -n=* || die |
| 554 | |
759 | # is-ldflagq -n && die |
| 555 | replace-cpu-flags pentium-mmx i586 |
760 | # |
| 556 | replace-cpu-flags pentium{2,3,4} i686 |
761 | # strip-unsupported-flags |
| 557 | |
762 | # [[ ${CFLAGS} == "-c=1" ]] || die |
| 558 | replace-cpu-flags ev6{7,8} ev6 |
763 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
| 559 | |
764 | # |
| 560 | export CFLAGS CXXFLAGS |
765 | # echo "All tests pass" |
| 561 | } |
766 | #} |
| 562 | |
767 | #TESTS |
| 563 | # Gets the flags needed for "NOW" binding |
|
|
| 564 | bindnow-flags() { |
|
|
| 565 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
| 566 | *GNU* | *'with BFD'*) # GNU ld |
|
|
| 567 | echo "-Wl,-z,now" ;; |
|
|
| 568 | *Apple*) # Darwin ld |
|
|
| 569 | echo "-bind_at_load" ;; |
|
|
| 570 | *) |
|
|
| 571 | # Some linkers just recognize -V instead of -v |
|
|
| 572 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
| 573 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
| 574 | echo "-Wl,-z,now" ;; |
|
|
| 575 | esac |
|
|
| 576 | ;; |
|
|
| 577 | esac |
|
|
| 578 | } |
|
|
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