1 | # Copyright 1999-2003 Gentoo Technologies, Inc. |
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 1.53 2004/06/01 04:28:38 solar Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.161 2011/12/15 05:23:15 vapier 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 | if [[ ${___ECLASS_ONCE_FLAG_O_MATIC} != "recur -_+^+_- spank" ]] ; then |
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14 | ___ECLASS_ONCE_FLAG_O_MATIC="recur -_+^+_- spank" |
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15 | |
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16 | inherit eutils toolchain-funcs multilib |
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17 | |
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18 | ################ DEPRECATED functions ################ |
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19 | # The following are still present to avoid breaking existing |
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20 | # code more than necessary; however they are deprecated. Please |
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21 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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22 | # need to know which hardened techs are active in the compiler. |
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23 | # See bug #100974 |
4 | # |
24 | # |
5 | # Author Bart Verwilst <verwilst@gentoo.org> |
25 | # has_hardened |
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26 | # has_pie |
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27 | # has_pic |
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28 | # has_ssp_all |
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29 | # has_ssp |
6 | |
30 | |
7 | ECLASS=flag-o-matic |
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8 | INHERITED="$INHERITED $ECLASS" |
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9 | |
31 | |
10 | # |
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11 | #### filter-flags <flags> #### |
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12 | # Remove particular flags from C[XX]FLAGS |
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13 | # Matches only complete flags |
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14 | # |
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15 | #### append-flags <flags> #### |
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16 | # Add extra flags to your current C[XX]FLAGS |
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17 | # |
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18 | #### replace-flags <orig.flag> <new.flag> ### |
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19 | # Replace a flag by another one |
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20 | # |
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21 | #### replace-cpu-flags <new.cpu> <old.cpus> ### |
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22 | # Replace march/mcpu flags that specify <old.cpus> |
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23 | # with flags that specify <new.cpu> |
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24 | # |
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25 | #### is-flag <flag> #### |
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26 | # Returns "true" if flag is set in C[XX]FLAGS |
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27 | # Matches only complete a flag |
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28 | # |
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29 | #### strip-flags #### |
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30 | # Strip C[XX]FLAGS of everything except known |
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31 | # good options. |
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32 | # |
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33 | #### strip-unsupported-flags #### |
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34 | # Strip C[XX]FLAGS of any flags not supported by |
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35 | # installed version of gcc |
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36 | # |
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37 | #### get-flag <flag> #### |
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38 | # Find and echo the value for a particular flag |
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39 | # |
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40 | #### replace-sparc64-flags #### |
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41 | # Sets mcpu to v8 and uses the original value |
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42 | # as mtune if none specified. |
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43 | # |
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44 | #### filter-mfpmath <math types> #### |
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45 | # Remove specified math types from the fpmath specification |
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46 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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47 | # will leave the user with -mfpmath=386 |
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48 | # |
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49 | #### append-ldflags #### |
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50 | # Add extra flags to your current LDFLAGS |
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51 | # |
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52 | #### filter-ldflags <flags> #### |
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53 | # Remove particular flags from LDFLAGS |
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54 | # Matches only complete flags |
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55 | # |
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56 | #### etexec-flags #### |
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57 | # hooked function for hardened gcc that appends |
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58 | # -fno-pic to {C,CXX,LD}FLAGS |
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59 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
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60 | # |
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61 | #### fstack-flags #### |
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62 | # hooked function for hardened gcc that appends |
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63 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
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64 | # when a package is filtering -fstack-protector, -fstack-protector-all |
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65 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
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66 | # when only -fno-stack-protector is given |
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67 | # |
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68 | |
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69 | # C[XX]FLAGS that we allow in strip-flags |
32 | # {C,CXX,F,FC}FLAGS that we allow in strip-flags |
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33 | # Note: shell globs and character lists are allowed |
70 | setup-allowed-flags() { |
34 | setup-allowed-flags() { |
71 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
35 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
72 | export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" |
36 | export ALLOWED_FLAGS="-pipe" |
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37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
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38 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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39 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-strict-overflow" |
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40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
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41 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
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42 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident -fpermissive" |
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43 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
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44 | fi |
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45 | # allow a bunch of flags that negate features / control ABI |
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46 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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47 | -fno-strict-aliasing -fno-bounds-checking -fstrict-overflow -fno-omit-frame-pointer" |
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48 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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49 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-ssse3 -mno-sse4 -mno-sse4.1 \ |
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50 | -mno-sse4.2 -mno-avx -mno-aes -mno-pclmul -mno-sse4a -mno-3dnow \ |
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51 | -mno-popcnt -mno-abm \ |
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52 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -mplt \ |
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53 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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54 | -mieee -mieee-with-inexact -mschedule -mfloat-gprs -mspe -mno-spe \ |
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55 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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56 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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57 | -m32 -m64 -mx32 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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58 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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59 | -msecure-plt -m*-toc -D* -U*" |
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60 | |
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61 | # 4.5 |
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62 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fma4 -mno-movbe -mno-xop -mno-lwp" |
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63 | # 4.6 |
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64 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-fsgsbase -mno-rdrnd -mno-f16c \ |
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65 | -mno-bmi -mno-tbm" |
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66 | |
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67 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
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68 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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69 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
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70 | return 0 |
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71 | } |
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72 | |
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73 | # inverted filters for hardened compiler. This is trying to unpick |
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74 | # the hardened compiler defaults. |
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75 | _filter-hardened() { |
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76 | local f |
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77 | for f in "$@" ; do |
73 | case "${ARCH}" in |
78 | case "${f}" in |
74 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; |
79 | # Ideally we should only concern ourselves with PIE flags, |
75 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
80 | # not -fPIC or -fpic, but too many places filter -fPIC without |
76 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
81 | # thinking about -fPIE. |
77 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
82 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
78 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
83 | gcc-specs-pie || continue |
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84 | is-flagq -nopie || append-flags -nopie;; |
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85 | -fstack-protector) |
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86 | gcc-specs-ssp || continue |
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87 | is-flagq -fno-stack-protector || append-flags $(test-flags -fno-stack-protector);; |
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88 | -fstack-protector-all) |
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89 | gcc-specs-ssp-to-all || continue |
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90 | is-flagq -fno-stack-protector-all || append-flags $(test-flags -fno-stack-protector-all);; |
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91 | -fno-strict-overflow) |
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92 | gcc-specs-nostrict || continue |
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93 | is-flagq -fstrict-overflow || append-flags $(test-flags -fstrict-overflow);; |
79 | esac |
94 | esac |
80 | fi |
95 | done |
81 | |
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82 | # C[XX]FLAGS that we are think is ok, but needs testing |
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83 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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84 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
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85 | return 0 |
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86 | } |
96 | } |
87 | |
97 | |
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98 | # Remove occurrences of strings from variable given in $1 |
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99 | # Strings removed are matched as globs, so for example |
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100 | # '-O*' would remove -O1, -O2 etc. |
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101 | _filter-var() { |
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102 | local f x VAR VAL |
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103 | declare -a new |
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104 | |
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105 | VAR=$1 |
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106 | shift |
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107 | eval VAL=\${${VAR}} |
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108 | for f in ${VAL}; do |
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109 | for x in "$@"; do |
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110 | # Note this should work with globs like -O* |
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111 | [[ ${f} == ${x} ]] && continue 2 |
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112 | done |
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113 | eval new\[\${\#new\[@]}]=\${f} |
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114 | done |
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115 | eval export ${VAR}=\${new\[*]} |
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116 | } |
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117 | |
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118 | # @FUNCTION: filter-flags |
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119 | # @USAGE: <flags> |
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120 | # @DESCRIPTION: |
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121 | # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. |
88 | filter-flags() { |
122 | filter-flags() { |
89 | for x in "$@" ; do |
123 | _filter-hardened "$@" |
90 | case "${x}" in |
124 | _filter-var CFLAGS "$@" |
91 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
125 | _filter-var CPPFLAGS "$@" |
92 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
126 | _filter-var CXXFLAGS "$@" |
93 | *) ;; |
127 | _filter-var FFLAGS "$@" |
94 | esac |
128 | _filter-var FCFLAGS "$@" |
95 | done |
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96 | |
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97 | # we do this fancy spacing stuff so as to not filter |
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98 | # out part of a flag ... we want flag atoms ! :D |
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99 | CFLAGS=" ${CFLAGS} " |
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100 | CXXFLAGS=" ${CXXFLAGS} " |
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101 | for x in "$@" ; do |
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102 | CFLAGS="${CFLAGS// ${x} / }" |
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103 | CXXFLAGS="${CXXFLAGS// ${x} / }" |
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104 | done |
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105 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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106 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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107 | return 0 |
129 | return 0 |
108 | } |
130 | } |
109 | |
131 | |
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132 | # @FUNCTION: filter-lfs-flags |
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133 | # @DESCRIPTION: |
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134 | # Remove flags that enable Large File Support. |
110 | filter-lfs-flags() { |
135 | filter-lfs-flags() { |
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136 | [[ $# -ne 0 ]] && die "filter-lfs-flags takes no arguments" |
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137 | # http://www.gnu.org/s/libc/manual/html_node/Feature-Test-Macros.html |
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138 | # _LARGEFILE_SOURCE: enable support for new LFS funcs (ftello/etc...) |
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139 | # _LARGEFILE64_SOURCE: enable support for 64bit variants (off64_t/fseeko64/etc...) |
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140 | # _FILE_OFFSET_BITS: default to 64bit variants (off_t is defined as off64_t) |
111 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
141 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
112 | } |
142 | } |
113 | |
143 | |
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144 | # @FUNCTION: append-cppflags |
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145 | # @USAGE: <flags> |
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146 | # @DESCRIPTION: |
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147 | # Add extra <flags> to the current CPPFLAGS. |
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148 | append-cppflags() { |
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149 | [[ $# -eq 0 ]] && return 0 |
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150 | export CPPFLAGS="${CPPFLAGS} $*" |
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151 | return 0 |
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152 | } |
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153 | |
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154 | # @FUNCTION: append-cflags |
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155 | # @USAGE: <flags> |
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156 | # @DESCRIPTION: |
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157 | # Add extra <flags> to the current CFLAGS. |
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158 | append-cflags() { |
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159 | [[ $# -eq 0 ]] && return 0 |
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160 | export CFLAGS=$(test-flags-CC ${CFLAGS} "$@") |
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161 | return 0 |
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162 | } |
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163 | |
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164 | # @FUNCTION: append-cxxflags |
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165 | # @USAGE: <flags> |
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166 | # @DESCRIPTION: |
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167 | # Add extra <flags> to the current CXXFLAGS. |
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168 | append-cxxflags() { |
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169 | [[ $# -eq 0 ]] && return 0 |
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170 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS} "$@") |
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171 | return 0 |
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172 | } |
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173 | |
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174 | # @FUNCTION: append-fflags |
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175 | # @USAGE: <flags> |
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176 | # @DESCRIPTION: |
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177 | # Add extra <flags> to the current {F,FC}FLAGS. |
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178 | append-fflags() { |
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179 | [[ $# -eq 0 ]] && return 0 |
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180 | export FFLAGS=$(test-flags-F77 ${FFLAGS} "$@") |
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181 | export FCFLAGS=$(test-flags-FC ${FCFLAGS} "$@") |
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182 | return 0 |
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183 | } |
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184 | |
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185 | # @FUNCTION: append-lfs-flags |
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186 | # @DESCRIPTION: |
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187 | # Add flags that enable Large File Support. |
114 | append-lfs-flags() { |
188 | append-lfs-flags() { |
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189 | [[ $# -ne 0 ]] && die "append-lfs-flags takes no arguments" |
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190 | # see comments in filter-lfs-flags func for meaning of these |
115 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
191 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
116 | } |
192 | } |
117 | |
193 | |
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194 | # @FUNCTION: append-flags |
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195 | # @USAGE: <flags> |
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196 | # @DESCRIPTION: |
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197 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
118 | append-flags() { |
198 | append-flags() { |
119 | export CFLAGS="${CFLAGS} $@" |
199 | [[ $# -eq 0 ]] && return 0 |
120 | export CXXFLAGS="${CXXFLAGS} $@" |
200 | append-cflags "$@" |
121 | [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
201 | append-cxxflags "$@" |
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202 | append-fflags "$@" |
122 | return 0 |
203 | return 0 |
123 | } |
204 | } |
124 | |
205 | |
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206 | # @FUNCTION: replace-flags |
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207 | # @USAGE: <old> <new> |
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208 | # @DESCRIPTION: |
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209 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
125 | replace-flags() { |
210 | replace-flags() { |
126 | # we do this fancy spacing stuff so as to not filter |
211 | [[ $# != 2 ]] \ |
127 | # out part of a flag ... we want flag atoms ! :D |
212 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
128 | CFLAGS=" ${CFLAGS} " |
213 | && die "replace-flags takes 2 arguments, not $#" |
129 | CXXFLAGS=" ${CXXFLAGS} " |
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130 | CFLAGS="${CFLAGS// ${1} / ${2} }" |
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131 | CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" |
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132 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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133 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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134 | return 0 |
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135 | } |
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136 | |
214 | |
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215 | local f fset |
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216 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
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217 | |
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218 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
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219 | # Looping over the flags instead of using a global |
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220 | # substitution ensures that we're working with flag atoms. |
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221 | # Otherwise globs like -O* have the potential to wipe out the |
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222 | # list of flags. |
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223 | for f in ${!fset}; do |
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224 | # Note this should work with globs like -O* |
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225 | [[ ${f} == ${1} ]] && f=${2} |
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226 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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227 | done |
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228 | eval export ${fset}=\${new_${fset}\[*]} |
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229 | done |
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230 | |
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231 | return 0 |
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232 | } |
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233 | |
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234 | # @FUNCTION: replace-cpu-flags |
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235 | # @USAGE: <old> <new> |
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236 | # @DESCRIPTION: |
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237 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
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238 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
137 | replace-cpu-flags() { |
239 | replace-cpu-flags() { |
138 | local newcpu="$1" ; shift |
240 | local newcpu="$#" ; newcpu="${!newcpu}" |
139 | local oldcpu="" |
241 | while [ $# -gt 1 ] ; do |
140 | for oldcpu in "$@" ; do |
242 | # quote to make sure that no globbing is done (particularly on |
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243 | # ${oldcpu}) prior to calling replace-flags |
141 | replace-flags -march=${oldcpu} -march=${newcpu} |
244 | replace-flags "-march=${1}" "-march=${newcpu}" |
142 | replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} |
245 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
143 | replace-flags -mtune=${oldcpu} -mtune=${newcpu} |
246 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
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247 | shift |
144 | done |
248 | done |
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249 | return 0 |
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250 | } |
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251 | |
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252 | _is_flagq() { |
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253 | local x |
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254 | for x in ${!1} ; do |
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255 | [[ ${x} == $2 ]] && return 0 |
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256 | done |
145 | return 0 |
257 | return 1 |
146 | } |
258 | } |
147 | |
259 | |
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260 | # @FUNCTION: is-flagq |
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261 | # @USAGE: <flag> |
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262 | # @DESCRIPTION: |
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263 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
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264 | is-flagq() { |
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265 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
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266 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
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267 | } |
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268 | |
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269 | # @FUNCTION: is-flag |
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270 | # @USAGE: <flag> |
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271 | # @DESCRIPTION: |
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272 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
148 | is-flag() { |
273 | is-flag() { |
149 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
274 | is-flagq "$@" && echo true |
150 | if [ "${x}" == "$1" ] ; then |
|
|
151 | echo true |
|
|
152 | return 0 |
|
|
153 | fi |
|
|
154 | done |
|
|
155 | return 1 |
|
|
156 | } |
275 | } |
157 | |
276 | |
|
|
277 | # @FUNCTION: is-ldflagq |
|
|
278 | # @USAGE: <flag> |
|
|
279 | # @DESCRIPTION: |
|
|
280 | # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs. |
|
|
281 | is-ldflagq() { |
|
|
282 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
|
|
283 | _is_flagq LDFLAGS $1 |
|
|
284 | } |
|
|
285 | |
|
|
286 | # @FUNCTION: is-ldflag |
|
|
287 | # @USAGE: <flag> |
|
|
288 | # @DESCRIPTION: |
|
|
289 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
|
|
290 | is-ldflag() { |
|
|
291 | is-ldflagq "$@" && echo true |
|
|
292 | } |
|
|
293 | |
|
|
294 | # @FUNCTION: filter-mfpmath |
|
|
295 | # @USAGE: <math types> |
|
|
296 | # @DESCRIPTION: |
|
|
297 | # Remove specified math types from the fpmath flag. For example, if the user |
|
|
298 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
|
|
299 | # -mfpmath=386. |
158 | filter-mfpmath() { |
300 | filter-mfpmath() { |
|
|
301 | local orig_mfpmath new_math prune_math |
|
|
302 | |
159 | # save the original -mfpmath flag |
303 | # save the original -mfpmath flag |
160 | local orig_mfpmath="`get-flag -mfpmath`" |
304 | orig_mfpmath=$(get-flag -mfpmath) |
161 | # get the value of the current -mfpmath flag |
305 | # get the value of the current -mfpmath flag |
162 | local new_math=" `get-flag mfpmath | tr , ' '` " |
306 | new_math=$(get-flag mfpmath) |
|
|
307 | new_math=" ${new_math//,/ } " |
163 | # figure out which math values are to be removed |
308 | # figure out which math values are to be removed |
164 | local prune_math="" |
309 | prune_math="" |
165 | for prune_math in "$@" ; do |
310 | for prune_math in "$@" ; do |
166 | new_math="${new_math/ ${prune_math} / }" |
311 | new_math=${new_math/ ${prune_math} / } |
167 | done |
312 | done |
168 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
313 | new_math=$(echo ${new_math}) |
|
|
314 | new_math=${new_math// /,} |
169 | |
315 | |
170 | if [ -z "${new_math}" ] ; then |
316 | if [[ -z ${new_math} ]] ; then |
171 | # if we're removing all user specified math values are |
317 | # if we're removing all user specified math values are |
172 | # slated for removal, then we just filter the flag |
318 | # slated for removal, then we just filter the flag |
173 | filter-flags ${orig_mfpmath} |
319 | filter-flags ${orig_mfpmath} |
174 | else |
320 | else |
175 | # if we only want to filter some of the user specified |
321 | # if we only want to filter some of the user specified |
… | |
… | |
177 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
323 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
178 | fi |
324 | fi |
179 | return 0 |
325 | return 0 |
180 | } |
326 | } |
181 | |
327 | |
|
|
328 | # @FUNCTION: strip-flags |
|
|
329 | # @DESCRIPTION: |
|
|
330 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
182 | strip-flags() { |
331 | strip-flags() { |
|
|
332 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
|
|
333 | |
183 | setup-allowed-flags |
334 | setup-allowed-flags |
184 | |
335 | |
185 | local NEW_CFLAGS="" |
336 | local NEW_CFLAGS="" |
186 | local NEW_CXXFLAGS="" |
337 | local NEW_CXXFLAGS="" |
|
|
338 | local NEW_FFLAGS="" |
|
|
339 | local NEW_FCFLAGS="" |
187 | |
340 | |
188 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
341 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
189 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
342 | if has "~$(tc-arch)" ${ACCEPT_KEYWORDS} ; then |
190 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
191 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
343 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
192 | fi |
344 | fi |
193 | |
345 | |
194 | set -f |
346 | set -f # disable pathname expansion |
195 | |
347 | |
196 | for x in ${CFLAGS} |
348 | for x in ${CFLAGS}; do |
197 | do |
|
|
198 | for y in ${ALLOWED_FLAGS} |
349 | for y in ${ALLOWED_FLAGS}; do |
199 | do |
|
|
200 | flag=${x%%=*} |
350 | flag=${x%%=*} |
201 | if [ "${flag%%${y}}" = "" ] |
351 | if [ "${flag%%${y}}" = "" ] ; then |
202 | then |
|
|
203 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
352 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
204 | break |
353 | break |
205 | fi |
354 | fi |
206 | done |
355 | done |
207 | done |
356 | done |
208 | |
357 | |
209 | for x in ${CXXFLAGS} |
358 | for x in ${CXXFLAGS}; do |
210 | do |
|
|
211 | for y in ${ALLOWED_FLAGS} |
359 | for y in ${ALLOWED_FLAGS}; do |
212 | do |
|
|
213 | flag=${x%%=*} |
360 | flag=${x%%=*} |
214 | if [ "${flag%%${y}}" = "" ] |
361 | if [ "${flag%%${y}}" = "" ] ; then |
215 | then |
|
|
216 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
362 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
217 | break |
363 | break |
218 | fi |
364 | fi |
219 | done |
365 | done |
220 | done |
366 | done |
221 | |
367 | |
|
|
368 | for x in ${FFLAGS}; do |
|
|
369 | for y in ${ALLOWED_FLAGS}; do |
|
|
370 | flag=${x%%=*} |
|
|
371 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
372 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
373 | break |
|
|
374 | fi |
|
|
375 | done |
|
|
376 | done |
|
|
377 | |
|
|
378 | for x in ${FCFLAGS}; do |
|
|
379 | for y in ${ALLOWED_FLAGS}; do |
|
|
380 | flag=${x%%=*} |
|
|
381 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
382 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
383 | break |
|
|
384 | fi |
|
|
385 | done |
|
|
386 | done |
|
|
387 | |
222 | # In case we filtered out all optimization flags fallback to -O2 |
388 | # In case we filtered out all optimization flags fallback to -O2 |
223 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
389 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
224 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
390 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
225 | fi |
391 | fi |
226 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
392 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
227 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
393 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
228 | fi |
394 | fi |
|
|
395 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
396 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
397 | fi |
|
|
398 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
399 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
400 | fi |
229 | |
401 | |
230 | set +f |
402 | set +f # re-enable pathname expansion |
231 | |
|
|
232 | use debug \ |
|
|
233 | && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \ |
|
|
234 | && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\"" |
|
|
235 | |
403 | |
236 | export CFLAGS="${NEW_CFLAGS}" |
404 | export CFLAGS="${NEW_CFLAGS}" |
237 | export CXXFLAGS="${NEW_CXXFLAGS}" |
405 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
406 | export FFLAGS="${NEW_FFLAGS}" |
|
|
407 | export FCFLAGS="${NEW_FCFLAGS}" |
238 | return 0 |
408 | return 0 |
239 | } |
409 | } |
240 | |
410 | |
241 | test_flag() { |
411 | test-flag-PROG() { |
242 | if [ -z "`gcc -S -xc "$@" -o /dev/null /dev/null 2>&1`" ]; then |
412 | local comp=$1 |
243 | echo "$@" |
413 | local flags="$2" |
|
|
414 | |
|
|
415 | [[ -z ${comp} || -z ${flags} ]] && return 1 |
|
|
416 | |
|
|
417 | # use -c so we can test the assembler as well |
|
|
418 | local PROG=$(tc-get${comp}) |
|
|
419 | ${PROG} ${flags} -c -o /dev/null -xc /dev/null \ |
|
|
420 | > /dev/null 2>&1 |
|
|
421 | } |
|
|
422 | |
|
|
423 | # @FUNCTION: test-flag-CC |
|
|
424 | # @USAGE: <flag> |
|
|
425 | # @DESCRIPTION: |
|
|
426 | # Returns shell true if <flag> is supported by the C compiler, else returns shell false. |
|
|
427 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
428 | |
|
|
429 | # @FUNCTION: test-flag-CXX |
|
|
430 | # @USAGE: <flag> |
|
|
431 | # @DESCRIPTION: |
|
|
432 | # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. |
|
|
433 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
434 | |
|
|
435 | # @FUNCTION: test-flag-F77 |
|
|
436 | # @USAGE: <flag> |
|
|
437 | # @DESCRIPTION: |
|
|
438 | # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false. |
|
|
439 | test-flag-F77() { test-flag-PROG "F77" "$1"; } |
|
|
440 | |
|
|
441 | # @FUNCTION: test-flag-FC |
|
|
442 | # @USAGE: <flag> |
|
|
443 | # @DESCRIPTION: |
|
|
444 | # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false. |
|
|
445 | test-flag-FC() { test-flag-PROG "FC" "$1"; } |
|
|
446 | |
|
|
447 | test-flags-PROG() { |
|
|
448 | local comp=$1 |
|
|
449 | local flags |
|
|
450 | local x |
|
|
451 | |
|
|
452 | shift |
|
|
453 | |
|
|
454 | [[ -z ${comp} ]] && return 1 |
|
|
455 | |
|
|
456 | for x in "$@" ; do |
|
|
457 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
458 | done |
|
|
459 | |
|
|
460 | echo "${flags}" |
|
|
461 | |
|
|
462 | # Just bail if we dont have any flags |
|
|
463 | [[ -n ${flags} ]] |
|
|
464 | } |
|
|
465 | |
|
|
466 | # @FUNCTION: test-flags-CC |
|
|
467 | # @USAGE: <flags> |
|
|
468 | # @DESCRIPTION: |
|
|
469 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
|
|
470 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
471 | |
|
|
472 | # @FUNCTION: test-flags-CXX |
|
|
473 | # @USAGE: <flags> |
|
|
474 | # @DESCRIPTION: |
|
|
475 | # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. |
|
|
476 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
477 | |
|
|
478 | # @FUNCTION: test-flags-F77 |
|
|
479 | # @USAGE: <flags> |
|
|
480 | # @DESCRIPTION: |
|
|
481 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
482 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
483 | |
|
|
484 | # @FUNCTION: test-flags-FC |
|
|
485 | # @USAGE: <flags> |
|
|
486 | # @DESCRIPTION: |
|
|
487 | # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false. |
|
|
488 | test-flags-FC() { test-flags-PROG "FC" "$@"; } |
|
|
489 | |
|
|
490 | # @FUNCTION: test-flags |
|
|
491 | # @USAGE: <flags> |
|
|
492 | # @DESCRIPTION: |
|
|
493 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
494 | # its really only present due to the append-flags() abomination. |
|
|
495 | test-flags() { test-flags-CC "$@"; } |
|
|
496 | |
|
|
497 | # @FUNCTION: test_version_info |
|
|
498 | # @USAGE: <version> |
|
|
499 | # @DESCRIPTION: |
|
|
500 | # Returns shell true if the current C compiler version matches <version>, else returns shell false. |
|
|
501 | # Accepts shell globs. |
|
|
502 | test_version_info() { |
|
|
503 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
244 | return 0 |
504 | return 0 |
245 | fi |
505 | else |
246 | return 1 |
506 | return 1 |
|
|
507 | fi |
247 | } |
508 | } |
248 | |
509 | |
|
|
510 | # @FUNCTION: strip-unsupported-flags |
|
|
511 | # @DESCRIPTION: |
|
|
512 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
249 | strip-unsupported-flags() { |
513 | strip-unsupported-flags() { |
250 | for x in ${CFLAGS} ; do |
514 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
251 | NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" |
515 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
252 | done |
516 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
253 | for x in ${CXXFLAGS} ; do |
517 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
254 | NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" |
|
|
255 | done |
|
|
256 | |
|
|
257 | export CFLAGS="${NEW_CFLAGS}" |
|
|
258 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
259 | } |
518 | } |
260 | |
519 | |
|
|
520 | # @FUNCTION: get-flag |
|
|
521 | # @USAGE: <flag> |
|
|
522 | # @DESCRIPTION: |
|
|
523 | # Find and echo the value for a particular flag. Accepts shell globs. |
261 | get-flag() { |
524 | get-flag() { |
|
|
525 | local f findflag="$1" |
|
|
526 | |
262 | # this code looks a little flaky but seems to work for |
527 | # this code looks a little flaky but seems to work for |
263 | # everything we want ... |
528 | # everything we want ... |
264 | # for example, if CFLAGS="-march=i686": |
529 | # for example, if CFLAGS="-march=i686": |
265 | # `get-flags -march` == "-march=i686" |
530 | # `get-flag -march` == "-march=i686" |
266 | # `get-flags march` == "i686" |
531 | # `get-flag march` == "i686" |
267 | local findflag="$1" |
|
|
268 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
532 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
269 | if [ "${f/${findflag}}" != "${f}" ] ; then |
533 | if [ "${f/${findflag}}" != "${f}" ] ; then |
270 | echo "${f/-${findflag}=}" |
534 | printf "%s\n" "${f/-${findflag}=}" |
271 | return 0 |
535 | return 0 |
272 | fi |
536 | fi |
273 | done |
537 | done |
274 | return 1 |
538 | return 1 |
275 | } |
539 | } |
276 | |
540 | |
277 | has_hardened() { |
541 | # DEAD FUNCS. Remove by Dec 2011. |
278 | local cc=${CC:-gcc} |
542 | test_flag() { die "$0: deprecated, please use test-flags()!" ; } |
279 | [[ $(${cc%% *} --version 2>&1) == *Hardened* ]] |
543 | has_hardened() { die "$0: deprecated, please use gcc-specs-{relro,now}()!" ; } |
280 | return $? |
544 | has_pic() { die "$0: deprecated, please use gcc-specs-pie()!" ; } |
281 | } |
545 | has_pie() { die "$0: deprecated, please use gcc-specs-pie()!" ; } |
|
|
546 | has_ssp_all() { die "$0: deprecated, please use gcc-specs-ssp()!" ; } |
|
|
547 | has_ssp() { die "$0: deprecated, please use gcc-specs-ssp()!" ; } |
282 | |
548 | |
283 | has_pic() { |
549 | # @FUNCTION: has_m64 |
284 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
550 | # @DESCRIPTION: |
285 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
551 | # This doesn't test if the flag is accepted, it tests if the flag actually |
286 | [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 |
552 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
|
|
553 | # return code is 0, else the return code is 1. |
|
|
554 | has_m64() { |
|
|
555 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
556 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
557 | # please dont replace this function with test_flag in some future |
|
|
558 | # clean-up! |
|
|
559 | |
|
|
560 | local temp="$(emktemp)" |
|
|
561 | echo "int main() { return(0); }" > "${temp}".c |
|
|
562 | MY_CC=$(tc-getCC) |
|
|
563 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
564 | local ret=$? |
|
|
565 | rm -f "${temp}".c |
|
|
566 | [[ ${ret} != 1 ]] && return 0 |
287 | return 1 |
567 | return 1 |
288 | } |
568 | } |
289 | |
569 | |
290 | has_pie() { |
570 | # @FUNCTION: has_m32 |
291 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
571 | # @DESCRIPTION: |
292 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
572 | # This doesn't test if the flag is accepted, it tests if the flag actually |
293 | [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 |
573 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
574 | # code is 0, else return code is 1. |
|
|
575 | has_m32() { |
|
|
576 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
577 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
578 | # please dont replace this function with test_flag in some future |
|
|
579 | # clean-up! |
|
|
580 | |
|
|
581 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
582 | |
|
|
583 | local temp=$(emktemp) |
|
|
584 | echo "int main() { return(0); }" > "${temp}".c |
|
|
585 | MY_CC=$(tc-getCC) |
|
|
586 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
587 | local ret=$? |
|
|
588 | rm -f "${temp}".c |
|
|
589 | [[ ${ret} != 1 ]] && return 0 |
294 | return 1 |
590 | return 1 |
295 | } |
591 | } |
296 | |
|
|
297 | has_ssp() { |
|
|
298 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
|
|
299 | [ ! -z "`${CC/ .*/} --version| grep ssp`" ] && return 0 |
|
|
300 | return 1 |
|
|
301 | } |
|
|
302 | |
592 | |
|
|
593 | # @FUNCTION: replace-sparc64-flags |
|
|
594 | # @DESCRIPTION: |
|
|
595 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
303 | replace-sparc64-flags() { |
596 | replace-sparc64-flags() { |
304 | local SPARC64_CPUS="ultrasparc v9" |
597 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
305 | |
598 | |
306 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] |
599 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
307 | then |
|
|
308 | for x in ${SPARC64_CPUS} |
600 | for x in ${SPARC64_CPUS}; do |
309 | do |
|
|
310 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
601 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
311 | done |
602 | done |
312 | else |
603 | else |
313 | for x in ${SPARC64_CPUS} |
604 | for x in ${SPARC64_CPUS}; do |
314 | do |
|
|
315 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
605 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
316 | done |
606 | done |
317 | fi |
607 | fi |
318 | |
608 | |
319 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] |
609 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
320 | then |
|
|
321 | for x in ${SPARC64_CPUS} |
610 | for x in ${SPARC64_CPUS}; do |
322 | do |
|
|
323 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
611 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
324 | done |
612 | done |
325 | else |
613 | else |
326 | for x in ${SPARC64_CPUS} |
614 | for x in ${SPARC64_CPUS}; do |
327 | do |
|
|
328 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
615 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
329 | done |
616 | done |
330 | fi |
617 | fi |
331 | } |
|
|
332 | |
618 | |
|
|
619 | export CFLAGS CXXFLAGS |
|
|
620 | } |
|
|
621 | |
|
|
622 | # @FUNCTION: append-libs |
|
|
623 | # @USAGE: <libs> |
|
|
624 | # @DESCRIPTION: |
|
|
625 | # Add extra <libs> to the current LIBS. |
|
|
626 | append-libs() { |
|
|
627 | [[ $# -eq 0 ]] && return 0 |
|
|
628 | local flag |
|
|
629 | for flag in "$@"; do |
|
|
630 | [[ ${flag} == -l* ]] && flag=${flag#-l} |
|
|
631 | export LIBS="${LIBS} -l${flag}" |
|
|
632 | done |
|
|
633 | |
|
|
634 | return 0 |
|
|
635 | } |
|
|
636 | |
|
|
637 | # @FUNCTION: append-ldflags |
|
|
638 | # @USAGE: <flags> |
|
|
639 | # @DESCRIPTION: |
|
|
640 | # Add extra <flags> to the current LDFLAGS. |
333 | append-ldflags() { |
641 | append-ldflags() { |
|
|
642 | [[ $# -eq 0 ]] && return 0 |
|
|
643 | local flag |
|
|
644 | for flag in "$@"; do |
|
|
645 | [[ ${flag} == -l* ]] && \ |
|
|
646 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
|
|
647 | done |
|
|
648 | |
334 | LDFLAGS="${LDFLAGS} $@" |
649 | export LDFLAGS="${LDFLAGS} $*" |
335 | return 0 |
650 | return 0 |
336 | } |
651 | } |
337 | |
652 | |
|
|
653 | # @FUNCTION: filter-ldflags |
|
|
654 | # @USAGE: <flags> |
|
|
655 | # @DESCRIPTION: |
|
|
656 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
338 | filter-ldflags() { |
657 | filter-ldflags() { |
339 | # we do this fancy spacing stuff so as to not filter |
658 | _filter-var LDFLAGS "$@" |
340 | # out part of a flag ... we want flag atoms ! :D |
659 | return 0 |
341 | LDFLAGS=" ${LDFLAGS} " |
660 | } |
|
|
661 | |
|
|
662 | # @FUNCTION: raw-ldflags |
|
|
663 | # @USAGE: [flags] |
|
|
664 | # @DESCRIPTION: |
|
|
665 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
|
|
666 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
|
|
667 | # to gcc where it needs the '-Wl,'. |
|
|
668 | # |
|
|
669 | # If no flags are specified, then default to ${LDFLAGS}. |
|
|
670 | raw-ldflags() { |
|
|
671 | local x input="$@" |
|
|
672 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
673 | set -- |
342 | for x in "$@" ; do |
674 | for x in ${input} ; do |
343 | LDFLAGS="${LDFLAGS// ${x} / }" |
675 | x=${x#-Wl,} |
|
|
676 | set -- "$@" ${x//,/ } |
344 | done |
677 | done |
345 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
678 | echo "$@" |
346 | return 0 |
|
|
347 | } |
679 | } |
348 | |
680 | |
349 | etexec-flags() { |
681 | # @FUNCTION: no-as-needed |
350 | # if your not using a hardened compiler you wont need this |
682 | # @RETURN: Flag to disable asneeded behavior for use with append-ldflags. |
351 | # PIC/no-pic kludge in the first place. |
683 | no-as-needed() { |
352 | has_hardened || return |
684 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
685 | *GNU*) # GNU ld |
|
|
686 | echo "-Wl,--no-as-needed" ;; |
|
|
687 | esac |
|
|
688 | } |
353 | |
689 | |
354 | has_pie || has_pic |
|
|
355 | if [ $? == 0 ] ; then |
|
|
356 | [ -z "`is-flag -fno-pic`" ] && |
|
|
357 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
|
|
358 | |
|
|
359 | [ -z "`is-flag -nopie`" ] && |
|
|
360 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
|
|
361 | fi |
690 | fi |
362 | } |
|
|
363 | |
|
|
364 | fstack-flags() { |
|
|
365 | has_ssp |
|
|
366 | if [ $? == 0 ] ; then |
|
|
367 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
368 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
369 | fi |
|
|
370 | } |
|
|