| 1 | # Copyright 1999-2003 Gentoo Technologies, Inc. |
1 | # Copyright 1999-2008 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 1.58 2004/06/10 15:28:56 agriffis Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.128 2009/01/02 22:14:18 gengor Exp $ |
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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. |
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12 | |
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13 | inherit eutils toolchain-funcs multilib |
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14 | |
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15 | ################ DEPRECATED functions ################ |
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16 | # The following are still present to avoid breaking existing |
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17 | # code more than necessary; however they are deprecated. Please |
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18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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19 | # need to know which hardened techs are active in the compiler. |
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20 | # See bug #100974 |
| 4 | # |
21 | # |
| 5 | # Author Bart Verwilst <verwilst@gentoo.org> |
22 | # has_hardened |
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23 | # has_pie |
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24 | # has_pic |
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25 | # has_ssp_all |
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26 | # has_ssp |
| 6 | |
27 | |
| 7 | ECLASS=flag-o-matic |
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| 8 | INHERITED="$INHERITED $ECLASS" |
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| 9 | IUSE="$IUSE debug" |
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| 10 | |
28 | |
| 11 | # |
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| 12 | #### filter-flags <flags> #### |
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| 13 | # Remove particular flags from C[XX]FLAGS |
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| 14 | # Matches only complete flags |
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| 15 | # |
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| 16 | #### append-flags <flags> #### |
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| 17 | # Add extra flags to your current C[XX]FLAGS |
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| 18 | # |
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| 19 | #### replace-flags <orig.flag> <new.flag> ### |
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| 20 | # Replace a flag by another one |
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| 21 | # |
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| 22 | #### replace-cpu-flags <new.cpu> <old.cpus> ### |
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| 23 | # Replace march/mcpu flags that specify <old.cpus> |
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| 24 | # with flags that specify <new.cpu> |
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| 25 | # |
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| 26 | #### is-flag <flag> #### |
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| 27 | # Returns "true" if flag is set in C[XX]FLAGS |
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| 28 | # Matches only complete a flag |
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| 29 | # |
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| 30 | #### strip-flags #### |
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| 31 | # Strip C[XX]FLAGS of everything except known |
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| 32 | # good options. |
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| 33 | # |
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| 34 | #### strip-unsupported-flags #### |
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| 35 | # Strip C[XX]FLAGS of any flags not supported by |
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| 36 | # installed version of gcc |
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| 37 | # |
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| 38 | #### get-flag <flag> #### |
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| 39 | # Find and echo the value for a particular flag |
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| 40 | # |
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| 41 | #### replace-sparc64-flags #### |
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| 42 | # Sets mcpu to v8 and uses the original value |
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| 43 | # as mtune if none specified. |
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| 44 | # |
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| 45 | #### filter-mfpmath <math types> #### |
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| 46 | # Remove specified math types from the fpmath specification |
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| 47 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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| 48 | # will leave the user with -mfpmath=386 |
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| 49 | # |
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| 50 | #### append-ldflags #### |
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| 51 | # Add extra flags to your current LDFLAGS |
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| 52 | # |
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| 53 | #### filter-ldflags <flags> #### |
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| 54 | # Remove particular flags from LDFLAGS |
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| 55 | # Matches only complete flags |
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| 56 | # |
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| 57 | #### etexec-flags #### |
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| 58 | # hooked function for hardened gcc that appends |
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| 59 | # -fno-pic to {C,CXX,LD}FLAGS |
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| 60 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
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| 61 | # |
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| 62 | #### fstack-flags #### |
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| 63 | # hooked function for hardened gcc that appends |
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| 64 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
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| 65 | # when a package is filtering -fstack-protector, -fstack-protector-all |
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| 66 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
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| 67 | # when only -fno-stack-protector is given |
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| 68 | # |
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| 69 | |
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| 70 | # 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 |
| 71 | setup-allowed-flags() { |
31 | setup-allowed-flags() { |
| 72 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 73 | export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" |
33 | export ALLOWED_FLAGS="-pipe" |
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34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
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35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow" |
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37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
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38 | export ALLOWED_FLAGS="${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" |
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41 | fi |
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42 | # allow a bunch of flags that negate features / control ABI |
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43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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44 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow" |
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45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
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47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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49 | -mieee -mieee-with-inexact -mschedule \ |
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50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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54 | -msecure-plt -m*-toc -D* -U*" |
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55 | |
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56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
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57 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
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59 | return 0 |
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60 | } |
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61 | |
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62 | # inverted filters for hardened compiler. This is trying to unpick |
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63 | # the hardened compiler defaults. |
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64 | _filter-hardened() { |
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65 | local f |
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66 | for f in "$@" ; do |
| 74 | case "${ARCH}" in |
67 | case "${f}" in |
| 75 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; |
68 | # Ideally we should only concern ourselves with PIE flags, |
| 76 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
69 | # not -fPIC or -fpic, but too many places filter -fPIC without |
| 77 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
70 | # thinking about -fPIE. |
| 78 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
71 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
| 79 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
72 | gcc-specs-pie || continue |
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73 | is-flagq -nopie || append-flags -nopie;; |
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74 | -fstack-protector) |
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75 | gcc-specs-ssp || continue |
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76 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
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77 | -fstack-protector-all) |
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78 | gcc-specs-ssp-to-all || continue |
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79 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
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80 | -fno-strict-overflow) |
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81 | gcc-specs-nostrict || continue |
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82 | is-flagq -fstrict-overflow || append-flags -fstrict-overflow;; |
| 80 | esac |
83 | esac |
| 81 | fi |
84 | done |
| 82 | |
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| 83 | # C[XX]FLAGS that we are think is ok, but needs testing |
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| 84 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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| 85 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
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| 86 | return 0 |
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| 87 | } |
85 | } |
| 88 | |
86 | |
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87 | # Remove occurrences of strings from variable given in $1 |
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88 | # Strings removed are matched as globs, so for example |
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89 | # '-O*' would remove -O1, -O2 etc. |
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90 | _filter-var() { |
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91 | local f x VAR VAL |
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92 | declare -a new |
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93 | |
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94 | VAR=$1 |
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95 | shift |
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96 | eval VAL=\${${VAR}} |
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97 | for f in ${VAL}; do |
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98 | for x in "$@"; do |
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99 | # Note this should work with globs like -O* |
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100 | [[ ${f} == ${x} ]] && continue 2 |
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101 | done |
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102 | eval new\[\${\#new\[@]}]=\${f} |
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103 | done |
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104 | eval export ${VAR}=\${new\[*]} |
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105 | } |
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106 | |
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107 | # @FUNCTION: filter-flags |
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108 | # @USAGE: <flags> |
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109 | # @DESCRIPTION: |
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110 | # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. |
| 89 | filter-flags() { |
111 | filter-flags() { |
| 90 | local x |
112 | _filter-hardened "$@" |
| 91 | |
113 | _filter-var CFLAGS "$@" |
| 92 | for x in "$@" ; do |
114 | _filter-var CPPFLAGS "$@" |
| 93 | case "${x}" in |
115 | _filter-var CXXFLAGS "$@" |
| 94 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
116 | _filter-var FFLAGS "$@" |
| 95 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
117 | _filter-var FCFLAGS "$@" |
| 96 | *) ;; |
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| 97 | esac |
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| 98 | done |
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| 99 | |
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| 100 | # we do this fancy spacing stuff so as to not filter |
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| 101 | # out part of a flag ... we want flag atoms ! :D |
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| 102 | CFLAGS=" ${CFLAGS} " |
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| 103 | CXXFLAGS=" ${CXXFLAGS} " |
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| 104 | for x in "$@" ; do |
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| 105 | CFLAGS="${CFLAGS// ${x} / }" |
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| 106 | CXXFLAGS="${CXXFLAGS// ${x} / }" |
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| 107 | done |
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| 108 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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| 109 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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| 110 | return 0 |
118 | return 0 |
| 111 | } |
119 | } |
| 112 | |
120 | |
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121 | # @FUNCTION: filter-lfs-flags |
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122 | # @DESCRIPTION: |
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123 | # Remove flags that enable Large File Support. |
| 113 | filter-lfs-flags() { |
124 | filter-lfs-flags() { |
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125 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 114 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
126 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 115 | } |
127 | } |
| 116 | |
128 | |
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129 | # @FUNCTION: append-cppflags |
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130 | # @USAGE: <flags> |
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131 | # @DESCRIPTION: |
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132 | # Add extra <flags> to the current CPPFLAGS. |
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133 | append-cppflags() { |
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134 | [[ -z $* ]] && return 0 |
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135 | export CPPFLAGS="${CPPFLAGS} $*" |
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136 | return 0 |
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137 | } |
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138 | |
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139 | # @FUNCTION: append-fflags |
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140 | # @USAGE: <flags> |
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141 | # @DESCRIPTION: |
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142 | # Add extra <flags> to the current {F,FC}FLAGS. |
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143 | append-fflags() { |
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144 | [[ -z $* ]] && return 0 |
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145 | export FFLAGS="${FFLAGS} $*" |
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146 | export FCFLAGS="${FCFLAGS} $*" |
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147 | return 0 |
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148 | } |
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149 | |
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150 | # @FUNCTION: append-lfs-flags |
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151 | # @DESCRIPTION: |
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152 | # Add flags that enable Large File Support. |
| 117 | append-lfs-flags() { |
153 | append-lfs-flags() { |
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154 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 118 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
155 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 119 | } |
156 | } |
| 120 | |
157 | |
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158 | # @FUNCTION: append-flags |
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159 | # @USAGE: <flags> |
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160 | # @DESCRIPTION: |
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161 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
| 121 | append-flags() { |
162 | append-flags() { |
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163 | [[ -z $* ]] && return 0 |
| 122 | export CFLAGS="${CFLAGS} $*" |
164 | export CFLAGS="${CFLAGS} $*" |
| 123 | export CXXFLAGS="${CXXFLAGS} $*" |
165 | export CXXFLAGS="${CXXFLAGS} $*" |
| 124 | [ -n "`is-flag -fno-stack-protector`" -o \ |
166 | export FFLAGS="${FFLAGS} $*" |
| 125 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
167 | export FCFLAGS="${FCFLAGS} $*" |
| 126 | return 0 |
168 | return 0 |
| 127 | } |
169 | } |
| 128 | |
170 | |
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171 | # @FUNCTION: replace-flags |
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172 | # @USAGE: <old> <new> |
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173 | # @DESCRIPTION: |
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174 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
| 129 | replace-flags() { |
175 | replace-flags() { |
| 130 | # we do this fancy spacing stuff so as to not filter |
176 | [[ $# != 2 ]] \ |
| 131 | # out part of a flag ... we want flag atoms ! :D |
177 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 132 | CFLAGS=" ${CFLAGS} " |
178 | && die "replace-flags takes 2 arguments, not $#" |
| 133 | CXXFLAGS=" ${CXXFLAGS} " |
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| 134 | CFLAGS="${CFLAGS// ${1} / ${2} }" |
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| 135 | CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" |
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| 136 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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| 137 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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| 138 | return 0 |
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| 139 | } |
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| 140 | |
179 | |
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180 | local f fset |
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181 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
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182 | |
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183 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
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184 | # Looping over the flags instead of using a global |
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185 | # substitution ensures that we're working with flag atoms. |
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186 | # Otherwise globs like -O* have the potential to wipe out the |
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187 | # list of flags. |
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188 | for f in ${!fset}; do |
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189 | # Note this should work with globs like -O* |
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190 | [[ ${f} == ${1} ]] && f=${2} |
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191 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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192 | done |
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193 | eval export ${fset}=\${new_${fset}\[*]} |
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194 | done |
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195 | |
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196 | return 0 |
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197 | } |
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198 | |
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199 | # @FUNCTION: replace-cpu-flags |
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200 | # @USAGE: <old> <new> |
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201 | # @DESCRIPTION: |
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202 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
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203 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
| 141 | replace-cpu-flags() { |
204 | replace-cpu-flags() { |
| 142 | local oldcpu newcpu="$1" ; shift |
205 | local newcpu="$#" ; newcpu="${!newcpu}" |
| 143 | for oldcpu in "$@" ; do |
206 | while [ $# -gt 1 ] ; do |
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207 | # quote to make sure that no globbing is done (particularly on |
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208 | # ${oldcpu}) prior to calling replace-flags |
| 144 | replace-flags -march=${oldcpu} -march=${newcpu} |
209 | replace-flags "-march=${1}" "-march=${newcpu}" |
| 145 | replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} |
210 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
| 146 | replace-flags -mtune=${oldcpu} -mtune=${newcpu} |
211 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
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212 | shift |
| 147 | done |
213 | done |
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214 | return 0 |
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215 | } |
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216 | |
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217 | _is_flagq() { |
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218 | local x |
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219 | for x in ${!1} ; do |
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220 | [[ ${x} == $2 ]] && return 0 |
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221 | done |
| 148 | return 0 |
222 | return 1 |
| 149 | } |
223 | } |
| 150 | |
224 | |
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225 | # @FUNCTION: is-flagq |
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226 | # @USAGE: <flag> |
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227 | # @DESCRIPTION: |
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228 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
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229 | is-flagq() { |
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230 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
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231 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
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232 | } |
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233 | |
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234 | # @FUNCTION: is-flag |
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235 | # @USAGE: <flag> |
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236 | # @DESCRIPTION: |
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237 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
| 151 | is-flag() { |
238 | is-flag() { |
| 152 | local x |
239 | is-flagq "$@" && echo true |
| 153 | |
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| 154 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
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| 155 | if [ "${x}" == "$1" ] ; then |
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| 156 | echo true |
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| 157 | return 0 |
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| 158 | fi |
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| 159 | done |
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| 160 | return 1 |
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| 161 | } |
240 | } |
| 162 | |
241 | |
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242 | # @FUNCTION: is-ldflagq |
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243 | # @USAGE: <flag> |
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244 | # @DESCRIPTION: |
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245 | # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs. |
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246 | is-ldflagq() { |
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247 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
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248 | _is_flagq LDFLAGS $1 |
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249 | } |
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250 | |
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251 | # @FUNCTION: is-ldflag |
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252 | # @USAGE: <flag> |
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253 | # @DESCRIPTION: |
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254 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
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255 | is-ldflag() { |
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256 | is-ldflagq "$@" && echo true |
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257 | } |
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258 | |
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259 | # @FUNCTION: filter-mfpmath |
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260 | # @USAGE: <math types> |
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261 | # @DESCRIPTION: |
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262 | # Remove specified math types from the fpmath flag. For example, if the user |
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263 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
|
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264 | # -mfpmath=386. |
| 163 | filter-mfpmath() { |
265 | filter-mfpmath() { |
| 164 | local orig_mfpmath new_math prune_math |
266 | local orig_mfpmath new_math prune_math |
| 165 | |
267 | |
| 166 | # save the original -mfpmath flag |
268 | # save the original -mfpmath flag |
| 167 | orig_mfpmath="`get-flag -mfpmath`" |
269 | orig_mfpmath=$(get-flag -mfpmath) |
| 168 | # get the value of the current -mfpmath flag |
270 | # get the value of the current -mfpmath flag |
| 169 | new_math=" `get-flag mfpmath | tr , ' '` " |
271 | new_math=$(get-flag mfpmath) |
|
|
272 | new_math=" ${new_math//,/ } " |
| 170 | # figure out which math values are to be removed |
273 | # figure out which math values are to be removed |
| 171 | prune_math="" |
274 | prune_math="" |
| 172 | for prune_math in "$@" ; do |
275 | for prune_math in "$@" ; do |
| 173 | new_math="${new_math/ ${prune_math} / }" |
276 | new_math=${new_math/ ${prune_math} / } |
| 174 | done |
277 | done |
| 175 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
278 | new_math=$(echo ${new_math}) |
|
|
279 | new_math=${new_math// /,} |
| 176 | |
280 | |
| 177 | if [ -z "${new_math}" ] ; then |
281 | if [[ -z ${new_math} ]] ; then |
| 178 | # if we're removing all user specified math values are |
282 | # if we're removing all user specified math values are |
| 179 | # slated for removal, then we just filter the flag |
283 | # slated for removal, then we just filter the flag |
| 180 | filter-flags ${orig_mfpmath} |
284 | filter-flags ${orig_mfpmath} |
| 181 | else |
285 | else |
| 182 | # if we only want to filter some of the user specified |
286 | # if we only want to filter some of the user specified |
| … | |
… | |
| 184 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
288 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
| 185 | fi |
289 | fi |
| 186 | return 0 |
290 | return 0 |
| 187 | } |
291 | } |
| 188 | |
292 | |
|
|
293 | # @FUNCTION: strip-flags |
|
|
294 | # @DESCRIPTION: |
|
|
295 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
| 189 | strip-flags() { |
296 | strip-flags() { |
| 190 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
297 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
| 191 | |
298 | |
| 192 | setup-allowed-flags |
299 | setup-allowed-flags |
| 193 | |
300 | |
| 194 | local NEW_CFLAGS="" |
301 | local NEW_CFLAGS="" |
| 195 | local NEW_CXXFLAGS="" |
302 | local NEW_CXXFLAGS="" |
|
|
303 | local NEW_FFLAGS="" |
|
|
304 | local NEW_FCFLAGS="" |
| 196 | |
305 | |
| 197 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
306 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 198 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
307 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
| 199 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
| 200 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
308 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 201 | fi |
309 | fi |
| 202 | |
310 | |
| 203 | set -f # disable pathname expansion |
311 | set -f # disable pathname expansion |
| 204 | |
312 | |
| 205 | for x in ${CFLAGS}; do |
313 | for x in ${CFLAGS}; do |
| 206 | for y in ${ALLOWED_FLAGS}; do |
314 | for y in ${ALLOWED_FLAGS}; do |
| 207 | flag=${x%%=*} |
315 | flag=${x%%=*} |
| 208 | if [ "${flag%%${y}}" = "" ]; then |
316 | if [ "${flag%%${y}}" = "" ] ; then |
| 209 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
317 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
| 210 | break |
318 | break |
| 211 | fi |
319 | fi |
| 212 | done |
320 | done |
| 213 | done |
321 | done |
| 214 | |
322 | |
| 215 | for x in ${CXXFLAGS}; do |
323 | for x in ${CXXFLAGS}; do |
| 216 | for y in ${ALLOWED_FLAGS}; do |
324 | for y in ${ALLOWED_FLAGS}; do |
| 217 | flag=${x%%=*} |
325 | flag=${x%%=*} |
| 218 | if [ "${flag%%${y}}" = "" ]; then |
326 | if [ "${flag%%${y}}" = "" ] ; then |
| 219 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
327 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
| 220 | break |
328 | break |
| 221 | fi |
329 | fi |
| 222 | done |
330 | done |
| 223 | done |
331 | done |
| 224 | |
332 | |
|
|
333 | for x in ${FFLAGS}; do |
|
|
334 | for y in ${ALLOWED_FLAGS}; do |
|
|
335 | flag=${x%%=*} |
|
|
336 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
337 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
338 | break |
|
|
339 | fi |
|
|
340 | done |
|
|
341 | done |
|
|
342 | |
|
|
343 | for x in ${FCFLAGS}; do |
|
|
344 | for y in ${ALLOWED_FLAGS}; do |
|
|
345 | flag=${x%%=*} |
|
|
346 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
347 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
348 | break |
|
|
349 | fi |
|
|
350 | done |
|
|
351 | done |
|
|
352 | |
| 225 | # In case we filtered out all optimization flags fallback to -O2 |
353 | # In case we filtered out all optimization flags fallback to -O2 |
| 226 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
354 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
| 227 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
355 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
| 228 | fi |
356 | fi |
| 229 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
357 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
| 230 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
358 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
| 231 | fi |
359 | fi |
|
|
360 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
361 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
362 | fi |
|
|
363 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
364 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
365 | fi |
| 232 | |
366 | |
| 233 | set +f # re-enable pathname expansion |
367 | set +f # re-enable pathname expansion |
| 234 | |
|
|
| 235 | useq debug \ |
|
|
| 236 | && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \ |
|
|
| 237 | && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\"" |
|
|
| 238 | |
368 | |
| 239 | export CFLAGS="${NEW_CFLAGS}" |
369 | export CFLAGS="${NEW_CFLAGS}" |
| 240 | export CXXFLAGS="${NEW_CXXFLAGS}" |
370 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
371 | export FFLAGS="${NEW_FFLAGS}" |
|
|
372 | export FCFLAGS="${NEW_FCFLAGS}" |
|
|
373 | return 0 |
|
|
374 | } |
|
|
375 | |
|
|
376 | test-flag-PROG() { |
|
|
377 | local comp=$1 |
|
|
378 | local flags="$2" |
|
|
379 | |
|
|
380 | [[ -z ${comp} || -z ${flags} ]] && \ |
| 241 | return 0 |
381 | return 1 |
| 242 | } |
|
|
| 243 | |
382 | |
|
|
383 | local PROG=$(tc-get${comp}) |
|
|
384 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
385 | > /dev/null 2>&1 |
|
|
386 | } |
|
|
387 | |
|
|
388 | # @FUNCTION: test-flag-CC |
|
|
389 | # @USAGE: <flag> |
|
|
390 | # @DESCRIPTION: |
|
|
391 | # Returns shell true if <flag> is supported by the C compiler, else returns shell false. |
|
|
392 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
393 | |
|
|
394 | # @FUNCTION: test-flag-CXX |
|
|
395 | # @USAGE: <flag> |
|
|
396 | # @DESCRIPTION: |
|
|
397 | # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. |
|
|
398 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
399 | |
|
|
400 | # @FUNCTION: test-flag-F77 |
|
|
401 | # @USAGE: <flag> |
|
|
402 | # @DESCRIPTION: |
|
|
403 | # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false. |
|
|
404 | test-flag-F77() { test-flag-PROG "F77" "$1"; } |
|
|
405 | |
|
|
406 | # @FUNCTION: test-flag-FC |
|
|
407 | # @USAGE: <flag> |
|
|
408 | # @DESCRIPTION: |
|
|
409 | # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false. |
|
|
410 | test-flag-FC() { test-flag-PROG "FC" "$1"; } |
|
|
411 | |
|
|
412 | test-flags-PROG() { |
|
|
413 | local comp=$1 |
|
|
414 | local flags |
|
|
415 | local x |
|
|
416 | |
|
|
417 | shift |
|
|
418 | |
|
|
419 | [[ -z ${comp} ]] && return 1 |
|
|
420 | |
|
|
421 | x="" |
|
|
422 | for x in "$@" ; do |
|
|
423 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
424 | done |
|
|
425 | |
|
|
426 | echo "${flags}" |
|
|
427 | |
|
|
428 | # Just bail if we dont have any flags |
|
|
429 | [[ -n ${flags} ]] |
|
|
430 | } |
|
|
431 | |
|
|
432 | # @FUNCTION: test-flags-CC |
|
|
433 | # @USAGE: <flags> |
|
|
434 | # @DESCRIPTION: |
|
|
435 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
|
|
436 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
437 | |
|
|
438 | # @FUNCTION: test-flags-CXX |
|
|
439 | # @USAGE: <flags> |
|
|
440 | # @DESCRIPTION: |
|
|
441 | # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. |
|
|
442 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
443 | |
|
|
444 | # @FUNCTION: test-flags-F77 |
|
|
445 | # @USAGE: <flags> |
|
|
446 | # @DESCRIPTION: |
|
|
447 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
448 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
449 | |
|
|
450 | # @FUNCTION: test-flags-FC |
|
|
451 | # @USAGE: <flags> |
|
|
452 | # @DESCRIPTION: |
|
|
453 | # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false. |
|
|
454 | test-flags-FC() { test-flags-PROG "FC" "$@"; } |
|
|
455 | |
|
|
456 | # @FUNCTION: test-flags |
|
|
457 | # @USAGE: <flags> |
|
|
458 | # @DESCRIPTION: |
|
|
459 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
460 | # its really only present due to the append-flags() abomination. |
|
|
461 | test-flags() { test-flags-CC "$@"; } |
|
|
462 | |
|
|
463 | # @FUNCTION: test_flag |
|
|
464 | # @DESCRIPTION: |
|
|
465 | # DEPRICIATED, use test-flags() |
| 244 | test_flag() { |
466 | test_flag() { |
| 245 | local cc=${CC:-gcc} ; cc=${cc%% *} |
467 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 246 | if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then |
|
|
| 247 | printf "%s\n" "$*" |
|
|
| 248 | return 0 |
|
|
| 249 | fi |
|
|
| 250 | return 1 |
|
|
| 251 | } |
|
|
| 252 | |
468 | |
|
|
469 | test-flags-CC "$@" |
|
|
470 | } |
|
|
471 | |
|
|
472 | # @FUNCTION: test_version_info |
|
|
473 | # @USAGE: <version> |
|
|
474 | # @DESCRIPTION: |
|
|
475 | # Returns shell true if the current C compiler version matches <version>, else returns shell false. |
|
|
476 | # Accepts shell globs. |
| 253 | test_version_info() { |
477 | test_version_info() { |
| 254 | local cc=${CC:-gcc} ; cc=${cc%% *} |
|
|
| 255 | if [[ $(${cc} --version 2>&1) == *$1* ]]; then |
478 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 256 | return 0 |
479 | return 0 |
| 257 | else |
480 | else |
| 258 | return 1 |
481 | return 1 |
| 259 | fi |
482 | fi |
| 260 | } |
483 | } |
| 261 | |
484 | |
|
|
485 | # @FUNCTION: strip-unsupported-flags |
|
|
486 | # @DESCRIPTION: |
|
|
487 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
| 262 | strip-unsupported-flags() { |
488 | strip-unsupported-flags() { |
| 263 | local NEW_CFLAGS NEW_CXXFLAGS |
489 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
| 264 | |
490 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
| 265 | for x in ${CFLAGS} ; do |
491 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
| 266 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
492 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
| 267 | done |
|
|
| 268 | for x in ${CXXFLAGS} ; do |
|
|
| 269 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
|
|
| 270 | done |
|
|
| 271 | |
|
|
| 272 | export CFLAGS="${NEW_CFLAGS}" |
|
|
| 273 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
| 274 | } |
493 | } |
| 275 | |
494 | |
|
|
495 | # @FUNCTION: get-flag |
|
|
496 | # @USAGE: <flag> |
|
|
497 | # @DESCRIPTION: |
|
|
498 | # Find and echo the value for a particular flag. Accepts shell globs. |
| 276 | get-flag() { |
499 | get-flag() { |
| 277 | local f findflag="$1" |
500 | local f findflag="$1" |
| 278 | |
501 | |
| 279 | # this code looks a little flaky but seems to work for |
502 | # this code looks a little flaky but seems to work for |
| 280 | # everything we want ... |
503 | # everything we want ... |
| 281 | # for example, if CFLAGS="-march=i686": |
504 | # for example, if CFLAGS="-march=i686": |
| 282 | # `get-flag -march` == "-march=i686" |
505 | # `get-flag -march` == "-march=i686" |
| 283 | # `get-flag march` == "i686" |
506 | # `get-flag march` == "i686" |
| 284 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
507 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
| 285 | if [ "${f/${findflag}}" != "${f}" ] ; then |
508 | if [ "${f/${findflag}}" != "${f}" ] ; then |
| 286 | printf "%s\n" "${f/-${findflag}=}" |
509 | printf "%s\n" "${f/-${findflag}=}" |
| 287 | return 0 |
510 | return 0 |
| 288 | fi |
511 | fi |
| 289 | done |
512 | done |
| 290 | return 1 |
513 | return 1 |
| 291 | } |
514 | } |
| 292 | |
515 | |
|
|
516 | # @FUNCTION: has_hardened |
|
|
517 | # @DESCRIPTION: |
|
|
518 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 293 | has_hardened() { |
519 | has_hardened() { |
|
|
520 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
521 | |
| 294 | test_version_info Hardened |
522 | test_version_info Hardened && return 0 |
| 295 | return $? |
523 | # The specs file wont exist unless gcc has GCC_SPECS support |
|
|
524 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 296 | } |
525 | } |
| 297 | |
526 | |
|
|
527 | # @FUNCTION: has_pic |
|
|
528 | # @DESCRIPTION: |
|
|
529 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
530 | # indicate whether PIC is set |
| 298 | has_pic() { |
531 | has_pic() { |
| 299 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
532 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 300 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
533 | |
| 301 | test_version_info pie && return 0 |
534 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
535 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
536 | gcc-specs-pie |
|
|
537 | } |
|
|
538 | |
|
|
539 | # @FUNCTION: has_pie |
|
|
540 | # @DESCRIPTION: |
|
|
541 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
542 | # indicate whether PIE is set |
|
|
543 | has_pie() { |
|
|
544 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
545 | |
|
|
546 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
|
|
547 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
548 | gcc-specs-pie |
|
|
549 | } |
|
|
550 | |
|
|
551 | # @FUNCTION: has_ssp_all |
|
|
552 | # @DESCRIPTION: |
|
|
553 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
554 | # indicate whether code for SSP is being generated for all functions |
|
|
555 | has_ssp_all() { |
|
|
556 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
557 | |
|
|
558 | # note; this matches only -fstack-protector-all |
|
|
559 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
560 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
561 | gcc-specs-ssp-all |
|
|
562 | } |
|
|
563 | |
|
|
564 | # @FUNCTION: has_ssp |
|
|
565 | # @DESCRIPTION: |
|
|
566 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
567 | # indicate whether code for SSP is being generated |
|
|
568 | has_ssp() { |
|
|
569 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
570 | |
|
|
571 | # note; this matches both -fstack-protector and -fstack-protector-all |
|
|
572 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
|
|
573 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
|
|
574 | gcc-specs-ssp |
|
|
575 | } |
|
|
576 | |
|
|
577 | # @FUNCTION: has_m64 |
|
|
578 | # @DESCRIPTION: |
|
|
579 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
580 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
|
|
581 | # return code is 0, else the return code is 1. |
|
|
582 | has_m64() { |
|
|
583 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
584 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
585 | # please dont replace this function with test_flag in some future |
|
|
586 | # clean-up! |
|
|
587 | |
|
|
588 | local temp="$(emktemp)" |
|
|
589 | echo "int main() { return(0); }" > "${temp}".c |
|
|
590 | MY_CC=$(tc-getCC) |
|
|
591 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
592 | local ret=$? |
|
|
593 | rm -f "${temp}".c |
|
|
594 | [[ ${ret} != 1 ]] && return 0 |
| 302 | return 1 |
595 | return 1 |
| 303 | } |
596 | } |
| 304 | |
597 | |
| 305 | has_pie() { |
598 | # @FUNCTION: has_m32 |
| 306 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
599 | # @DESCRIPTION: |
| 307 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
600 | # This doesn't test if the flag is accepted, it tests if the flag actually |
| 308 | test_version_info pie && return 0 |
601 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
602 | # code is 0, else return code is 1. |
|
|
603 | has_m32() { |
|
|
604 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
605 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
606 | # please dont replace this function with test_flag in some future |
|
|
607 | # clean-up! |
|
|
608 | |
|
|
609 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
610 | |
|
|
611 | local temp=$(emktemp) |
|
|
612 | echo "int main() { return(0); }" > "${temp}".c |
|
|
613 | MY_CC=$(tc-getCC) |
|
|
614 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
615 | local ret=$? |
|
|
616 | rm -f "${temp}".c |
|
|
617 | [[ ${ret} != 1 ]] && return 0 |
| 309 | return 1 |
618 | return 1 |
| 310 | } |
619 | } |
| 311 | |
|
|
| 312 | has_ssp() { |
|
|
| 313 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
|
|
| 314 | test_version_info ssp && return 0 |
|
|
| 315 | return 1 |
|
|
| 316 | } |
|
|
| 317 | |
620 | |
| 318 | has_m64() { |
621 | # @FUNCTION: replace-sparc64-flags |
| 319 | test_flag -m64 |
622 | # @DESCRIPTION: |
| 320 | return $? |
623 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
| 321 | } |
|
|
| 322 | |
|
|
| 323 | has_m32() { |
|
|
| 324 | test_flag -m32 |
|
|
| 325 | return $? |
|
|
| 326 | } |
|
|
| 327 | |
|
|
| 328 | replace-sparc64-flags() { |
624 | replace-sparc64-flags() { |
| 329 | local SPARC64_CPUS="ultrasparc v9" |
625 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 330 | |
626 | |
| 331 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
627 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 332 | for x in ${SPARC64_CPUS}; do |
628 | for x in ${SPARC64_CPUS}; do |
| 333 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
629 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 334 | done |
630 | done |
| 335 | else |
631 | else |
| 336 | for x in ${SPARC64_CPUS}; do |
632 | for x in ${SPARC64_CPUS}; do |
| 337 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
633 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 338 | done |
634 | done |
| 339 | fi |
635 | fi |
| 340 | |
636 | |
| 341 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
637 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
| 342 | for x in ${SPARC64_CPUS}; do |
638 | for x in ${SPARC64_CPUS}; do |
| 343 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
639 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 344 | done |
640 | done |
| 345 | else |
641 | else |
| 346 | for x in ${SPARC64_CPUS}; do |
642 | for x in ${SPARC64_CPUS}; do |
| 347 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
643 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 348 | done |
644 | done |
| 349 | fi |
645 | fi |
| 350 | } |
|
|
| 351 | |
646 | |
|
|
647 | export CFLAGS CXXFLAGS |
|
|
648 | } |
|
|
649 | |
|
|
650 | # @FUNCTION: append-ldflags |
|
|
651 | # @USAGE: <flags> |
|
|
652 | # @DESCRIPTION: |
|
|
653 | # Add extra <flags> to the current LDFLAGS. |
| 352 | append-ldflags() { |
654 | append-ldflags() { |
|
|
655 | [[ -z $* ]] && return 0 |
|
|
656 | local flag |
|
|
657 | for flag in "$@"; do |
|
|
658 | [[ ${flag} == -l* ]] && \ |
|
|
659 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
|
|
660 | done |
|
|
661 | |
| 353 | LDFLAGS="${LDFLAGS} $*" |
662 | export LDFLAGS="${LDFLAGS} $*" |
| 354 | return 0 |
663 | return 0 |
| 355 | } |
664 | } |
| 356 | |
665 | |
|
|
666 | # @FUNCTION: filter-ldflags |
|
|
667 | # @USAGE: <flags> |
|
|
668 | # @DESCRIPTION: |
|
|
669 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
| 357 | filter-ldflags() { |
670 | filter-ldflags() { |
| 358 | local x |
671 | _filter-var LDFLAGS "$@" |
|
|
672 | return 0 |
|
|
673 | } |
| 359 | |
674 | |
| 360 | # we do this fancy spacing stuff so as to not filter |
675 | # @FUNCTION: raw-ldflags |
| 361 | # out part of a flag ... we want flag atoms ! :D |
676 | # @USAGE: <flags> |
| 362 | LDFLAGS=" ${LDFLAGS} " |
677 | # @DESCRIPTION: |
|
|
678 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
|
|
679 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
|
|
680 | # to gcc where it needs the '-Wl,'. |
|
|
681 | raw-ldflags() { |
|
|
682 | local x input="$@" |
|
|
683 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
684 | set -- |
| 363 | for x in "$@" ; do |
685 | for x in ${input} ; do |
| 364 | LDFLAGS="${LDFLAGS// ${x} / }" |
686 | x=${x#-Wl,} |
|
|
687 | set -- "$@" ${x//,/ } |
| 365 | done |
688 | done |
| 366 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
689 | echo "$@" |
| 367 | return 0 |
|
|
| 368 | } |
690 | } |
| 369 | |
691 | |
| 370 | etexec-flags() { |
692 | # @FUNCTION: bindnow-flags |
| 371 | # if you're not using a hardened compiler you wont need this |
693 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
| 372 | # PIC/no-pic kludge in the first place. |
694 | # @DESCRIPTION: |
| 373 | has_hardened || return 0 |
695 | # DEPRECATED - Gets the flags needed for "NOW" binding |
|
|
696 | bindnow-flags() { |
|
|
697 | ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2 |
| 374 | |
698 | |
| 375 | if has_pie || has_pic; then |
699 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
| 376 | [ -z "`is-flag -fno-pic`" ] && |
700 | *GNU* | *'with BFD'*) # GNU ld |
| 377 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
701 | echo "-Wl,-z,now" ;; |
| 378 | [ -z "`is-flag -nopie`" ] && |
702 | *Apple*) # Darwin ld |
| 379 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
703 | echo "-bind_at_load" ;; |
| 380 | fi |
704 | *) |
| 381 | return 0 |
705 | # Some linkers just recognize -V instead of -v |
|
|
706 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
707 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
708 | echo "-Wl,-z,now" ;; |
|
|
709 | esac |
|
|
710 | ;; |
|
|
711 | esac |
| 382 | } |
712 | } |
| 383 | |
713 | |
| 384 | fstack-flags() { |
714 | |
| 385 | if has_ssp; then |
715 | # Some tests for when we screw with things and want to make |
| 386 | [ -z "`is-flag -fno-stack-protector`" ] && |
716 | # sure we didn't break anything |
| 387 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
717 | #TESTS() { |
| 388 | fi |
718 | # CFLAGS="-a -b -c=1" |
| 389 | return 0 |
719 | # CXXFLAGS="-x -y -z=2" |
| 390 | } |
720 | # LDFLAGS="-l -m -n=3" |
|
|
721 | # |
|
|
722 | # die() { exit 1; } |
|
|
723 | # (is-flag 1 2 3) && die |
|
|
724 | # (is-ldflag 1 2 3) && die |
|
|
725 | # |
|
|
726 | # is-flagq -l && die |
|
|
727 | # is-ldflagq -a && die |
|
|
728 | # is-flagq -a || die |
|
|
729 | # is-flagq -x || die |
|
|
730 | # is-ldflagq -n=* || die |
|
|
731 | # is-ldflagq -n && die |
|
|
732 | # |
|
|
733 | # strip-unsupported-flags |
|
|
734 | # [[ ${CFLAGS} == "-c=1" ]] || die |
|
|
735 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
|
|
736 | # |
|
|
737 | # echo "All tests pass" |
|
|
738 | #} |
|
|
739 | #TESTS |
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