1 | # Copyright 1999-2005 Gentoo Foundation |
1 | # Copyright 1999-2011 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 1.92 2005/08/01 10:50:55 kevquinn Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.159 2011/12/07 06:42:40 vapier 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 | # |
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63 | ################ DEPRECATED functions ################ |
15 | ################ DEPRECATED functions ################ |
64 | # The following are still present to avoid breaking existing |
16 | # The following are still present to avoid breaking existing |
65 | # code more than necessary; however they are deprecated. Please |
17 | # code more than necessary; however they are deprecated. Please |
66 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
67 | # need to know which hardened techs are active in the compiler. |
19 | # need to know which hardened techs are active in the compiler. |
68 | # See bug #100974 |
20 | # See bug #100974 |
69 | # |
21 | # |
70 | #### has_hardened #### |
22 | # has_hardened |
71 | # Returns true if the compiler has 'Hardened' in its version string, |
23 | # has_pie |
72 | # (note; switched-spec vanilla compilers satisfy this condition) or |
24 | # has_pic |
73 | # the specs file name contains 'hardened'. |
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74 | # |
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75 | #### has_pie #### |
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76 | # Returns true if the compiler by default or with current CFLAGS |
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77 | # builds position-independent code. |
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78 | # |
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79 | #### has_pic #### |
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80 | # Returns true if the compiler by default or with current CFLAGS |
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81 | # builds position-independent code. |
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82 | # |
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83 | #### has_ssp_all #### |
25 | # has_ssp_all |
84 | # Returns true if the compiler by default or with current CFLAGS |
26 | # has_ssp |
85 | # generates stack smash protections for all functions |
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86 | # |
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87 | #### has_ssp #### |
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88 | # Returns true if the compiler by default or with current CFLAGS |
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89 | # generates stack smash protections for most vulnerable functions |
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90 | # |
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91 | |
27 | |
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28 | |
92 | # 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 |
93 | setup-allowed-flags() { |
31 | setup-allowed-flags() { |
94 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
95 | export ALLOWED_FLAGS="-pipe" |
33 | export ALLOWED_FLAGS="-pipe" |
96 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
97 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow" |
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
100 | export ALLOWED_FLAGS="${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 -fpermissive" |
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40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
101 | fi |
41 | fi |
102 | # allow a bunch of flags that negate features / control ABI |
42 | # allow a bunch of flags that negate features / control ABI |
103 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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44 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer" |
104 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
105 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \ |
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47 | -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \ |
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48 | -mno-popcnt -mno-abm \ |
106 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
49 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \ |
107 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
50 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
108 | -mieee -mieee-with-inexact \ |
51 | -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \ |
109 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
52 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
110 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
53 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
111 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
54 | -m32 -m64 -mx32 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
112 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
55 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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56 | -msecure-plt -m*-toc -D* -U*" |
113 | |
57 | |
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58 | # 4.5 |
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59 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp" |
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60 | # 4.6 |
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61 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fsgsbase -mno-rdrnd -mno-f16c \ |
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62 | -mno-bmi -mno-tbm" |
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63 | |
114 | # C[XX]FLAGS that we are think is ok, but needs testing |
64 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
115 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
65 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
116 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
66 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
117 | return 0 |
67 | return 0 |
118 | } |
68 | } |
119 | |
69 | |
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70 | # inverted filters for hardened compiler. This is trying to unpick |
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71 | # the hardened compiler defaults. |
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72 | _filter-hardened() { |
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73 | local f |
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74 | for f in "$@" ; 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. |
120 | filter-flags() { |
119 | filter-flags() { |
121 | local x f fset |
120 | _filter-hardened "$@" |
122 | declare -a new_CFLAGS new_CXXFLAGS |
121 | _filter-var CFLAGS "$@" |
123 | |
122 | _filter-var CPPFLAGS "$@" |
124 | for x in "$@" ; do |
123 | _filter-var CXXFLAGS "$@" |
125 | case "${x}" in |
124 | _filter-var FFLAGS "$@" |
126 | -fPIC|-fpic|-fPIE|-fpie|-pie) |
125 | _filter-var FCFLAGS "$@" |
127 | append-flags `test_flag -fno-pie`;; |
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128 | -fstack-protector|-fstack-protector-all) |
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129 | fstack-flags;; |
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130 | esac |
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131 | done |
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132 | |
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133 | for fset in CFLAGS CXXFLAGS; do |
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134 | # Looping over the flags instead of using a global |
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135 | # substitution ensures that we're working with flag atoms. |
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136 | # Otherwise globs like -O* have the potential to wipe out the |
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137 | # list of flags. |
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138 | for f in ${!fset}; do |
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139 | for x in "$@"; do |
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140 | # Note this should work with globs like -O* |
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141 | [[ ${f} == ${x} ]] && continue 2 |
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142 | done |
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143 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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144 | done |
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145 | eval export ${fset}=\${new_${fset}\[*]} |
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146 | done |
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147 | |
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148 | return 0 |
126 | return 0 |
149 | } |
127 | } |
150 | |
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. |
151 | filter-lfs-flags() { |
132 | filter-lfs-flags() { |
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133 | [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments" |
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134 | # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html |
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135 | # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...) |
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136 | # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...) |
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137 | # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t) |
152 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
138 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
153 | } |
139 | } |
154 | |
140 | |
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141 | # @FUNCTION: append-cppflags |
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142 | # @USAGE: <flags> |
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143 | # @DESCRIPTION: |
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144 | # Add extra <flags> to the current CPPFLAGS. |
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145 | append-cppflags() { |
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146 | [[ $# -eq 0 ]] && return 0 |
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147 | export CPPFLAGS="${CPPFLAGS} $*" |
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148 | return 0 |
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149 | } |
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150 | |
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151 | # @FUNCTION: append-cflags |
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152 | # @USAGE: <flags> |
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153 | # @DESCRIPTION: |
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154 | # Add extra <flags> to the current CFLAGS. |
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155 | append-cflags() { |
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156 | [[ $# -eq 0 ]] && return 0 |
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157 | export CFLAGS=$(test-flags-CC ${CFLAGS} "$@") |
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158 | return 0 |
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159 | } |
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160 | |
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161 | # @FUNCTION: append-cxxflags |
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162 | # @USAGE: <flags> |
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163 | # @DESCRIPTION: |
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164 | # Add extra <flags> to the current CXXFLAGS. |
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165 | append-cxxflags() { |
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166 | [[ $# -eq 0 ]] && return 0 |
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167 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@") |
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168 | return 0 |
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169 | } |
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170 | |
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171 | # @FUNCTION: append-fflags |
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172 | # @USAGE: <flags> |
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173 | # @DESCRIPTION: |
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174 | # Add extra <flags> to the current {F,FC}FLAGS. |
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175 | append-fflags() { |
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176 | [[ $# -eq 0 ]] && return 0 |
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177 | export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@") |
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178 | export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@") |
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179 | return 0 |
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180 | } |
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181 | |
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182 | # @FUNCTION: append-lfs-flags |
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183 | # @DESCRIPTION: |
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184 | # Add flags that enable Large File Support. |
155 | append-lfs-flags() { |
185 | append-lfs-flags() { |
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186 | [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments" |
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187 | # see comments in filter-lfs-flags func for meaning of these |
156 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
188 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
157 | } |
189 | } |
158 | |
190 | |
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191 | # @FUNCTION: append-flags |
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192 | # @USAGE: <flags> |
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193 | # @DESCRIPTION: |
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194 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
159 | append-flags() { |
195 | append-flags() { |
160 | [[ -z $* ]] && return 0 |
196 | [[ $# -eq 0 ]] && return 0 |
161 | export CFLAGS="${CFLAGS} $*" |
197 | append-cflags "$@" |
162 | export CXXFLAGS="${CXXFLAGS} $*" |
198 | append-cxxflags "$@" |
163 | [ -n "`is-flag -fno-stack-protector`" -o \ |
199 | append-fflags "$@" |
164 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
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165 | return 0 |
200 | return 0 |
166 | } |
201 | } |
167 | |
202 | |
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203 | # @FUNCTION: replace-flags |
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204 | # @USAGE: <old> <new> |
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205 | # @DESCRIPTION: |
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206 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
168 | replace-flags() { |
207 | replace-flags() { |
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208 | [[ $# != 2 ]] \ |
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209 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
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210 | && die "replace-flags takes 2 arguments, not $#" |
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211 | |
169 | local f fset |
212 | local f fset |
170 | declare -a new_CFLAGS new_CXXFLAGS |
213 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
171 | |
214 | |
172 | for fset in CFLAGS CXXFLAGS; do |
215 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
173 | # Looping over the flags instead of using a global |
216 | # Looping over the flags instead of using a global |
174 | # substitution ensures that we're working with flag atoms. |
217 | # substitution ensures that we're working with flag atoms. |
175 | # Otherwise globs like -O* have the potential to wipe out the |
218 | # Otherwise globs like -O* have the potential to wipe out the |
176 | # list of flags. |
219 | # list of flags. |
177 | for f in ${!fset}; do |
220 | for f in ${!fset}; do |
… | |
… | |
183 | done |
226 | done |
184 | |
227 | |
185 | return 0 |
228 | return 0 |
186 | } |
229 | } |
187 | |
230 | |
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231 | # @FUNCTION: replace-cpu-flags |
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232 | # @USAGE: <old> <new> |
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233 | # @DESCRIPTION: |
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234 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
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235 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
188 | replace-cpu-flags() { |
236 | replace-cpu-flags() { |
189 | local newcpu="$#" ; newcpu="${!newcpu}" |
237 | local newcpu="$#" ; newcpu="${!newcpu}" |
190 | while [ $# -gt 1 ] ; do |
238 | while [ $# -gt 1 ] ; do |
191 | # quote to make sure that no globbing is done (particularly on |
239 | # quote to make sure that no globbing is done (particularly on |
192 | # ${oldcpu} prior to calling replace-flags |
240 | # ${oldcpu}) prior to calling replace-flags |
193 | replace-flags "-march=${1}" "-march=${newcpu}" |
241 | replace-flags "-march=${1}" "-march=${newcpu}" |
194 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
242 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
195 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
243 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
196 | shift |
244 | shift |
197 | done |
245 | done |
198 | return 0 |
246 | return 0 |
199 | } |
247 | } |
200 | |
248 | |
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249 | _is_flagq() { |
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250 | local x |
|
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251 | for x in ${!1} ; do |
|
|
252 | [[ ${x} == $2 ]] && return 0 |
|
|
253 | done |
|
|
254 | return 1 |
|
|
255 | } |
|
|
256 | |
|
|
257 | # @FUNCTION: is-flagq |
|
|
258 | # @USAGE: <flag> |
|
|
259 | # @DESCRIPTION: |
|
|
260 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
|
|
261 | is-flagq() { |
|
|
262 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
|
|
263 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
|
|
264 | } |
|
|
265 | |
|
|
266 | # @FUNCTION: is-flag |
|
|
267 | # @USAGE: <flag> |
|
|
268 | # @DESCRIPTION: |
|
|
269 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
201 | is-flag() { |
270 | is-flag() { |
202 | local x |
271 | is-flagq "$@" && echo true |
203 | |
|
|
204 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
|
|
205 | # Note this should work with globs like -mcpu=ultrasparc* |
|
|
206 | if [[ ${x} == ${1} ]]; then |
|
|
207 | echo true |
|
|
208 | return 0 |
|
|
209 | fi |
|
|
210 | done |
|
|
211 | return 1 |
|
|
212 | } |
272 | } |
213 | |
273 | |
|
|
274 | # @FUNCTION: is-ldflagq |
|
|
275 | # @USAGE: <flag> |
|
|
276 | # @DESCRIPTION: |
|
|
277 | # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs. |
|
|
278 | is-ldflagq() { |
|
|
279 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
|
|
280 | _is_flagq LDFLAGS $1 |
|
|
281 | } |
|
|
282 | |
|
|
283 | # @FUNCTION: is-ldflag |
|
|
284 | # @USAGE: <flag> |
|
|
285 | # @DESCRIPTION: |
|
|
286 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
|
|
287 | is-ldflag() { |
|
|
288 | is-ldflagq "$@" && echo true |
|
|
289 | } |
|
|
290 | |
|
|
291 | # @FUNCTION: filter-mfpmath |
|
|
292 | # @USAGE: <math types> |
|
|
293 | # @DESCRIPTION: |
|
|
294 | # Remove specified math types from the fpmath flag. For example, if the user |
|
|
295 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
|
|
296 | # -mfpmath=386. |
214 | filter-mfpmath() { |
297 | filter-mfpmath() { |
215 | local orig_mfpmath new_math prune_math |
298 | local orig_mfpmath new_math prune_math |
216 | |
299 | |
217 | # save the original -mfpmath flag |
300 | # save the original -mfpmath flag |
218 | orig_mfpmath="`get-flag -mfpmath`" |
301 | orig_mfpmath=$(get-flag -mfpmath) |
219 | # get the value of the current -mfpmath flag |
302 | # get the value of the current -mfpmath flag |
220 | new_math=" `get-flag mfpmath | tr , ' '` " |
303 | new_math=$(get-flag mfpmath) |
|
|
304 | new_math=" ${new_math//,/ } " |
221 | # figure out which math values are to be removed |
305 | # figure out which math values are to be removed |
222 | prune_math="" |
306 | prune_math="" |
223 | for prune_math in "$@" ; do |
307 | for prune_math in "$@" ; do |
224 | new_math="${new_math/ ${prune_math} / }" |
308 | new_math=${new_math/ ${prune_math} / } |
225 | done |
309 | done |
226 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
310 | new_math=$(echo ${new_math}) |
|
|
311 | new_math=${new_math// /,} |
227 | |
312 | |
228 | if [ -z "${new_math}" ] ; then |
313 | if [[ -z ${new_math} ]] ; then |
229 | # if we're removing all user specified math values are |
314 | # if we're removing all user specified math values are |
230 | # slated for removal, then we just filter the flag |
315 | # slated for removal, then we just filter the flag |
231 | filter-flags ${orig_mfpmath} |
316 | filter-flags ${orig_mfpmath} |
232 | else |
317 | else |
233 | # if we only want to filter some of the user specified |
318 | # if we only want to filter some of the user specified |
… | |
… | |
235 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
320 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
236 | fi |
321 | fi |
237 | return 0 |
322 | return 0 |
238 | } |
323 | } |
239 | |
324 | |
|
|
325 | # @FUNCTION: strip-flags |
|
|
326 | # @DESCRIPTION: |
|
|
327 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
240 | strip-flags() { |
328 | strip-flags() { |
241 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
329 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
242 | |
330 | |
243 | setup-allowed-flags |
331 | setup-allowed-flags |
244 | |
332 | |
245 | local NEW_CFLAGS="" |
333 | local NEW_CFLAGS="" |
246 | local NEW_CXXFLAGS="" |
334 | local NEW_CXXFLAGS="" |
|
|
335 | local NEW_FFLAGS="" |
|
|
336 | local NEW_FCFLAGS="" |
247 | |
337 | |
248 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
338 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
249 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
339 | if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then |
250 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
340 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
251 | fi |
341 | fi |
252 | |
342 | |
253 | set -f # disable pathname expansion |
343 | set -f # disable pathname expansion |
254 | |
344 | |
… | |
… | |
270 | break |
360 | break |
271 | fi |
361 | fi |
272 | done |
362 | done |
273 | done |
363 | done |
274 | |
364 | |
|
|
365 | for x in ${FFLAGS}; do |
|
|
366 | for y in ${ALLOWED_FLAGS}; do |
|
|
367 | flag=${x%%=*} |
|
|
368 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
369 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
370 | break |
|
|
371 | fi |
|
|
372 | done |
|
|
373 | done |
|
|
374 | |
|
|
375 | for x in ${FCFLAGS}; do |
|
|
376 | for y in ${ALLOWED_FLAGS}; do |
|
|
377 | flag=${x%%=*} |
|
|
378 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
379 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
380 | break |
|
|
381 | fi |
|
|
382 | done |
|
|
383 | done |
|
|
384 | |
275 | # In case we filtered out all optimization flags fallback to -O2 |
385 | # In case we filtered out all optimization flags fallback to -O2 |
276 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
386 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
277 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
387 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
278 | fi |
388 | fi |
279 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
389 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
280 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
390 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
281 | fi |
391 | fi |
|
|
392 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
393 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
394 | fi |
|
|
395 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
396 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
397 | fi |
282 | |
398 | |
283 | set +f # re-enable pathname expansion |
399 | set +f # re-enable pathname expansion |
284 | |
400 | |
285 | export CFLAGS="${NEW_CFLAGS}" |
401 | export CFLAGS="${NEW_CFLAGS}" |
286 | export CXXFLAGS="${NEW_CXXFLAGS}" |
402 | export CXXFLAGS="${NEW_CXXFLAGS}" |
287 | return 0 |
403 | export FFLAGS="${NEW_FFLAGS}" |
288 | } |
404 | export FCFLAGS="${NEW_FCFLAGS}" |
289 | |
|
|
290 | test_flag() { |
|
|
291 | if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then |
|
|
292 | printf "%s\n" "$*" |
|
|
293 | return 0 |
405 | return 0 |
294 | fi |
|
|
295 | return 1 |
|
|
296 | } |
406 | } |
297 | |
407 | |
|
|
408 | test-flag-PROG() { |
|
|
409 | local comp=$1 |
|
|
410 | local flags="$2" |
|
|
411 | |
|
|
412 | [[ -z ${comp} || -z ${flags} ]] && return 1 |
|
|
413 | |
|
|
414 | # use -c so we can test the assembler as well |
|
|
415 | local PROG=$(tc-get${comp}) |
|
|
416 | ${PROG} ${flags} -c -o /dev/null -xc /dev/null \ |
|
|
417 | > /dev/null 2>&1 |
|
|
418 | } |
|
|
419 | |
|
|
420 | # @FUNCTION: test-flag-CC |
|
|
421 | # @USAGE: <flag> |
|
|
422 | # @DESCRIPTION: |
|
|
423 | # Returns shell true if <flag> is supported by the C compiler, else returns shell false. |
|
|
424 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
425 | |
|
|
426 | # @FUNCTION: test-flag-CXX |
|
|
427 | # @USAGE: <flag> |
|
|
428 | # @DESCRIPTION: |
|
|
429 | # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. |
|
|
430 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
431 | |
|
|
432 | # @FUNCTION: test-flag-F77 |
|
|
433 | # @USAGE: <flag> |
|
|
434 | # @DESCRIPTION: |
|
|
435 | # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false. |
|
|
436 | test-flag-F77() { test-flag-PROG "F77" "$1"; } |
|
|
437 | |
|
|
438 | # @FUNCTION: test-flag-FC |
|
|
439 | # @USAGE: <flag> |
|
|
440 | # @DESCRIPTION: |
|
|
441 | # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false. |
|
|
442 | test-flag-FC() { test-flag-PROG "FC" "$1"; } |
|
|
443 | |
|
|
444 | test-flags-PROG() { |
|
|
445 | local comp=$1 |
|
|
446 | local flags |
|
|
447 | local x |
|
|
448 | |
|
|
449 | shift |
|
|
450 | |
|
|
451 | [[ -z ${comp} ]] && return 1 |
|
|
452 | |
|
|
453 | for x in "$@" ; do |
|
|
454 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
455 | done |
|
|
456 | |
|
|
457 | echo "${flags}" |
|
|
458 | |
|
|
459 | # Just bail if we dont have any flags |
|
|
460 | [[ -n ${flags} ]] |
|
|
461 | } |
|
|
462 | |
|
|
463 | # @FUNCTION: test-flags-CC |
|
|
464 | # @USAGE: <flags> |
|
|
465 | # @DESCRIPTION: |
|
|
466 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
|
|
467 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
468 | |
|
|
469 | # @FUNCTION: test-flags-CXX |
|
|
470 | # @USAGE: <flags> |
|
|
471 | # @DESCRIPTION: |
|
|
472 | # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. |
|
|
473 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
474 | |
|
|
475 | # @FUNCTION: test-flags-F77 |
|
|
476 | # @USAGE: <flags> |
|
|
477 | # @DESCRIPTION: |
|
|
478 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
479 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
480 | |
|
|
481 | # @FUNCTION: test-flags-FC |
|
|
482 | # @USAGE: <flags> |
|
|
483 | # @DESCRIPTION: |
|
|
484 | # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false. |
|
|
485 | test-flags-FC() { test-flags-PROG "FC" "$@"; } |
|
|
486 | |
|
|
487 | # @FUNCTION: test-flags |
|
|
488 | # @USAGE: <flags> |
|
|
489 | # @DESCRIPTION: |
|
|
490 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
491 | # its really only present due to the append-flags() abomination. |
|
|
492 | test-flags() { test-flags-CC "$@"; } |
|
|
493 | |
|
|
494 | # @FUNCTION: test_version_info |
|
|
495 | # @USAGE: <version> |
|
|
496 | # @DESCRIPTION: |
|
|
497 | # Returns shell true if the current C compiler version matches <version>, else returns shell false. |
|
|
498 | # Accepts shell globs. |
298 | test_version_info() { |
499 | test_version_info() { |
299 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
500 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
300 | return 0 |
501 | return 0 |
301 | else |
502 | else |
302 | return 1 |
503 | return 1 |
303 | fi |
504 | fi |
304 | } |
505 | } |
305 | |
506 | |
|
|
507 | # @FUNCTION: strip-unsupported-flags |
|
|
508 | # @DESCRIPTION: |
|
|
509 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
306 | strip-unsupported-flags() { |
510 | strip-unsupported-flags() { |
307 | local NEW_CFLAGS NEW_CXXFLAGS |
511 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
308 | |
512 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
309 | for x in ${CFLAGS} ; do |
513 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
310 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
514 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
311 | done |
|
|
312 | for x in ${CXXFLAGS} ; do |
|
|
313 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
|
|
314 | done |
|
|
315 | |
|
|
316 | export CFLAGS="${NEW_CFLAGS}" |
|
|
317 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
318 | } |
515 | } |
319 | |
516 | |
|
|
517 | # @FUNCTION: get-flag |
|
|
518 | # @USAGE: <flag> |
|
|
519 | # @DESCRIPTION: |
|
|
520 | # Find and echo the value for a particular flag. Accepts shell globs. |
320 | get-flag() { |
521 | get-flag() { |
321 | local f findflag="$1" |
522 | local f findflag="$1" |
322 | |
523 | |
323 | # this code looks a little flaky but seems to work for |
524 | # this code looks a little flaky but seems to work for |
324 | # everything we want ... |
525 | # everything we want ... |
325 | # for example, if CFLAGS="-march=i686": |
526 | # for example, if CFLAGS="-march=i686": |
326 | # `get-flag -march` == "-march=i686" |
527 | # `get-flag -march` == "-march=i686" |
327 | # `get-flag march` == "i686" |
528 | # `get-flag march` == "i686" |
328 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
529 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
329 | if [ "${f/${findflag}}" != "${f}" ] ; then |
530 | if [ "${f/${findflag}}" != "${f}" ] ; then |
330 | printf "%s\n" "${f/-${findflag}=}" |
531 | printf "%s\n" "${f/-${findflag}=}" |
331 | return 0 |
532 | return 0 |
332 | fi |
533 | fi |
333 | done |
534 | done |
334 | return 1 |
535 | return 1 |
335 | } |
536 | } |
336 | |
537 | |
337 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
538 | # DEAD FUNCS. Remove by Dec 2011. |
338 | has_hardened() { |
539 | test_flag() { die "$0: deprecated, please use test-flags()!" ; } |
339 | test_version_info Hardened && return 0 |
540 | has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; } |
340 | # the specs file wont exist unless gcc has GCC_SPECS support |
541 | has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; } |
341 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
542 | has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; } |
342 | return 0 |
543 | has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; } |
343 | return 1 |
544 | has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; } |
344 | } |
|
|
345 | |
545 | |
346 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
546 | # @FUNCTION: has_m64 |
347 | # indicate whether PIC is set |
547 | # @DESCRIPTION: |
348 | has_pic() { |
548 | # This doesn't test if the flag is accepted, it tests if the flag actually |
349 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
549 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
350 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
550 | # return code is 0, else the return code is 1. |
351 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
|
|
352 | return 1 |
|
|
353 | } |
|
|
354 | |
|
|
355 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
356 | # indicate whether PIE is set |
|
|
357 | has_pie() { |
|
|
358 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
|
|
359 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
|
|
360 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0 |
|
|
361 | # test PIC while waiting for specs to be updated to generate __PIE__ |
|
|
362 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 |
|
|
363 | return 1 |
|
|
364 | } |
|
|
365 | |
|
|
366 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
367 | # indicate whether code for SSP is being generated for all functions |
|
|
368 | has_ssp_all() { |
|
|
369 | # note; this matches only -fstack-protector-all |
|
|
370 | [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0 |
|
|
371 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0 |
|
|
372 | gcc-specs-ssp && return 0 |
|
|
373 | return 1 |
|
|
374 | } |
|
|
375 | |
|
|
376 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
377 | # indicate whether code for SSP is being generated |
|
|
378 | has_ssp() { |
|
|
379 | # note; this matches both -fstack-protector and -fstack-protector-all |
|
|
380 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
|
|
381 | [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0 |
|
|
382 | gcc-specs-ssp && return 0 |
|
|
383 | return 1 |
|
|
384 | } |
|
|
385 | |
|
|
386 | has_m64() { |
551 | has_m64() { |
387 | # this doesnt test if the flag is accepted, it tests if the flag |
552 | # this doesnt test if the flag is accepted, it tests if the flag |
388 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
553 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
389 | # please dont replace this function with test_flag in some future |
554 | # please dont replace this function with test_flag in some future |
390 | # clean-up! |
555 | # clean-up! |
|
|
556 | |
391 | local temp="$(emktemp)" |
557 | local temp="$(emktemp)" |
392 | echo "int main() { return(0); }" > ${temp}.c |
558 | echo "int main() { return(0); }" > "${temp}".c |
393 | MY_CC=$(tc-getCC) |
559 | MY_CC=$(tc-getCC) |
394 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
560 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
395 | local ret=$? |
561 | local ret=$? |
396 | rm -f ${temp}.c |
562 | rm -f "${temp}".c |
397 | [ "$ret" != "1" ] && return 0 |
563 | [[ ${ret} != 1 ]] && return 0 |
398 | return 1 |
564 | return 1 |
399 | } |
565 | } |
400 | |
566 | |
|
|
567 | # @FUNCTION: has_m32 |
|
|
568 | # @DESCRIPTION: |
|
|
569 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
570 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
571 | # code is 0, else return code is 1. |
401 | has_m32() { |
572 | has_m32() { |
402 | # this doesnt test if the flag is accepted, it tests if the flag |
573 | # this doesnt test if the flag is accepted, it tests if the flag |
403 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
574 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
404 | # please dont replace this function with test_flag in some future |
575 | # please dont replace this function with test_flag in some future |
405 | # clean-up! |
576 | # clean-up! |
406 | |
577 | |
407 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
578 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
408 | |
579 | |
409 | local temp="$(emktemp)" |
580 | local temp=$(emktemp) |
410 | echo "int main() { return(0); }" > ${temp}.c |
581 | echo "int main() { return(0); }" > "${temp}".c |
411 | MY_CC=$(tc-getCC) |
582 | MY_CC=$(tc-getCC) |
412 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
583 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
413 | local ret=$? |
584 | local ret=$? |
414 | rm -f ${temp}.c |
585 | rm -f "${temp}".c |
415 | [ "$ret" != "1" ] && return 0 |
586 | [[ ${ret} != 1 ]] && return 0 |
416 | return 1 |
587 | return 1 |
417 | } |
588 | } |
418 | |
589 | |
|
|
590 | # @FUNCTION: replace-sparc64-flags |
|
|
591 | # @DESCRIPTION: |
|
|
592 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
419 | replace-sparc64-flags() { |
593 | replace-sparc64-flags() { |
420 | local SPARC64_CPUS="ultrasparc v9" |
594 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
421 | |
595 | |
422 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
596 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
423 | for x in ${SPARC64_CPUS}; do |
597 | for x in ${SPARC64_CPUS}; do |
424 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
598 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
425 | done |
599 | done |
426 | else |
600 | else |
427 | for x in ${SPARC64_CPUS}; do |
601 | for x in ${SPARC64_CPUS}; do |
428 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
602 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
429 | done |
603 | done |
430 | fi |
604 | fi |
431 | |
605 | |
432 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
606 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
433 | for x in ${SPARC64_CPUS}; do |
607 | for x in ${SPARC64_CPUS}; do |
434 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
608 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
435 | done |
609 | done |
436 | else |
610 | else |
437 | for x in ${SPARC64_CPUS}; do |
611 | for x in ${SPARC64_CPUS}; do |
438 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
612 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
439 | done |
613 | done |
440 | fi |
614 | fi |
441 | |
615 | |
442 | export CFLAGS CXXFLAGS |
616 | export CFLAGS CXXFLAGS |
443 | } |
617 | } |
444 | |
618 | |
|
|
619 | # @FUNCTION: append-libs |
|
|
620 | # @USAGE: <libs> |
|
|
621 | # @DESCRIPTION: |
|
|
622 | # Add extra <libs> to the current LIBS. |
|
|
623 | append-libs() { |
|
|
624 | [[ $# -eq 0 ]] && return 0 |
|
|
625 | local flag |
|
|
626 | for flag in "$@"; do |
|
|
627 | [[ ${flag} == -l* ]] && flag=${flag#-l} |
|
|
628 | export LIBS="${LIBS} -l${flag}" |
|
|
629 | done |
|
|
630 | |
|
|
631 | return 0 |
|
|
632 | } |
|
|
633 | |
|
|
634 | # @FUNCTION: append-ldflags |
|
|
635 | # @USAGE: <flags> |
|
|
636 | # @DESCRIPTION: |
|
|
637 | # Add extra <flags> to the current LDFLAGS. |
445 | append-ldflags() { |
638 | append-ldflags() { |
|
|
639 | [[ $# -eq 0 ]] && return 0 |
|
|
640 | local flag |
|
|
641 | for flag in "$@"; do |
|
|
642 | [[ ${flag} == -l* ]] && \ |
|
|
643 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
|
|
644 | done |
|
|
645 | |
446 | export LDFLAGS="${LDFLAGS} $*" |
646 | export LDFLAGS="${LDFLAGS} $*" |
447 | return 0 |
647 | return 0 |
448 | } |
648 | } |
449 | |
649 | |
|
|
650 | # @FUNCTION: filter-ldflags |
|
|
651 | # @USAGE: <flags> |
|
|
652 | # @DESCRIPTION: |
|
|
653 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
450 | filter-ldflags() { |
654 | filter-ldflags() { |
451 | local x |
655 | _filter-var LDFLAGS "$@" |
452 | |
|
|
453 | # we do this fancy spacing stuff so as to not filter |
|
|
454 | # out part of a flag ... we want flag atoms ! :D |
|
|
455 | LDFLAGS=" ${LDFLAGS} " |
|
|
456 | for x in "$@" ; do |
|
|
457 | LDFLAGS=${LDFLAGS// ${x} / } |
|
|
458 | done |
|
|
459 | [[ -z ${LDFLAGS// } ]] \ |
|
|
460 | && LDFLAGS="" \ |
|
|
461 | || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2} |
|
|
462 | export LDFLAGS |
|
|
463 | return 0 |
656 | return 0 |
464 | } |
657 | } |
465 | |
658 | |
466 | fstack-flags() { |
659 | # @FUNCTION: raw-ldflags |
467 | if gcc-specs-ssp; then |
660 | # @USAGE: [flags] |
468 | [ -z "`is-flag -fno-stack-protector`" ] && |
661 | # @DESCRIPTION: |
469 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
662 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
470 | fi |
663 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
471 | return 0 |
664 | # to gcc where it needs the '-Wl,'. |
472 | } |
|
|
473 | |
|
|
474 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
|
|
475 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
|
|
476 | # fixes. |
|
|
477 | # |
665 | # |
478 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
666 | # If no flags are specified, then default to ${LDFLAGS}. |
479 | gcc2-flags() { |
667 | raw-ldflags() { |
480 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
668 | local x input="$@" |
481 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
669 | [[ -z ${input} ]] && input=${LDFLAGS} |
482 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
670 | set -- |
483 | fi |
671 | for x in ${input} ; do |
484 | |
672 | x=${x#-Wl,} |
485 | replace-cpu-flags k6-{2,3} k6 |
673 | set -- "$@" ${x//,/ } |
486 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
674 | done |
487 | |
675 | echo "$@" |
488 | replace-cpu-flags pentium-mmx i586 |
|
|
489 | replace-cpu-flags pentium{2,3,4} i686 |
|
|
490 | |
|
|
491 | replace-cpu-flags ev6{7,8} ev6 |
|
|
492 | |
|
|
493 | export CFLAGS CXXFLAGS |
|
|
494 | } |
676 | } |
|
|
677 | |
|
|
678 | # @FUNCTION: no-as-needed |
|
|
679 | # @RETURN: Flag to disable asneeded behavior for use with append-ldflags. |
|
|
680 | no-as-needed() { |
|
|
681 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
682 | *GNU*) # GNU ld |
|
|
683 | echo "-Wl,--no-as-needed" ;; |
|
|
684 | esac |
|
|
685 | } |
|
|
686 | |
|
|
687 | # Some tests for when we screw with things and want to make |
|
|
688 | # sure we didn't break anything |
|
|
689 | #TESTS() { |
|
|
690 | # CFLAGS="-a -b -c=1" |
|
|
691 | # CXXFLAGS="-x -y -z=2" |
|
|
692 | # LDFLAGS="-l -m -n=3" |
|
|
693 | # |
|
|
694 | # die() { exit 1; } |
|
|
695 | # (is-flag 1 2 3) && die |
|
|
696 | # (is-ldflag 1 2 3) && die |
|
|
697 | # |
|
|
698 | # is-flagq -l && die |
|
|
699 | # is-ldflagq -a && die |
|
|
700 | # is-flagq -a || die |
|
|
701 | # is-flagq -x || die |
|
|
702 | # is-ldflagq -n=* || die |
|
|
703 | # is-ldflagq -n && die |
|
|
704 | # |
|
|
705 | # strip-unsupported-flags |
|
|
706 | # [[ ${CFLAGS} == "-c=1" ]] || die |
|
|
707 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
|
|
708 | # |
|
|
709 | # echo "All tests pass" |
|
|
710 | #} |
|
|
711 | #TESTS |