| 1 | # Copyright 1999-2004 Gentoo Foundation |
1 | # Copyright 1999-2005 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 1.79 2004/12/25 18:45:56 chriswhite Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.106 2006/02/19 23:18:30 vapier Exp $ |
| 4 | # |
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| 5 | # Author Bart Verwilst <verwilst@gentoo.org> |
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| 6 | |
4 | |
| 7 | ECLASS=flag-o-matic |
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| 8 | INHERITED="$INHERITED $ECLASS" |
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| 9 | |
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| 10 | IUSE="debug" |
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| 11 | |
5 | |
| 12 | # need access to emktemp() |
6 | # need access to emktemp() |
| 13 | inherit eutils toolchain-funcs |
7 | inherit eutils toolchain-funcs multilib |
| 14 | |
8 | |
| 15 | # |
9 | # |
| 16 | #### filter-flags <flags> #### |
10 | #### filter-flags <flags> #### |
| 17 | # Remove particular flags from C[XX]FLAGS |
11 | # Remove particular flags from C[XX]FLAGS |
| 18 | # Matches only complete flags |
12 | # Matches only complete flags |
| … | |
… | |
| 25 | # |
19 | # |
| 26 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
20 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
| 27 | # Replace march/mcpu flags that specify <old.cpus> |
21 | # Replace march/mcpu flags that specify <old.cpus> |
| 28 | # with flags that specify <new.cpu> |
22 | # with flags that specify <new.cpu> |
| 29 | # |
23 | # |
| 30 | #### is-flag <flag> #### |
24 | #### is-flag[q] <flag> #### |
| 31 | # Returns "true" if flag is set in C[XX]FLAGS |
25 | # Returns "true" if flag is set in C[XX]FLAGS |
| 32 | # Matches only complete a flag |
26 | # Matches only complete a flag |
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27 | # q version sets return code but doesn't echo |
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28 | # |
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29 | #### is-ldflag[q] <flag> #### |
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30 | # Returns "true" if flag is set in LDFLAGS |
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31 | # Matches only complete a flag |
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32 | # q version sets return code but doesn't echo |
| 33 | # |
33 | # |
| 34 | #### strip-flags #### |
34 | #### strip-flags #### |
| 35 | # Strip C[XX]FLAGS of everything except known |
35 | # Strip C[XX]FLAGS of everything except known |
| 36 | # good options. |
36 | # good options. |
| 37 | # |
37 | # |
| … | |
… | |
| 56 | # |
56 | # |
| 57 | #### filter-ldflags <flags> #### |
57 | #### filter-ldflags <flags> #### |
| 58 | # Remove particular flags from LDFLAGS |
58 | # Remove particular flags from LDFLAGS |
| 59 | # Matches only complete flags |
59 | # Matches only complete flags |
| 60 | # |
60 | # |
| 61 | #### etexec-flags #### |
61 | #### bindnow-flags #### |
| 62 | # hooked function for hardened gcc that appends |
62 | # Returns the flags to enable "now" binding in the current selected linker. |
| 63 | # -fno-pic to {C,CXX,LD}FLAGS |
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| 64 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
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|
| 65 | # |
63 | # |
| 66 | #### fstack-flags #### |
64 | ################ DEPRECATED functions ################ |
| 67 | # hooked function for hardened gcc that appends |
65 | # The following are still present to avoid breaking existing |
| 68 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
66 | # code more than necessary; however they are deprecated. Please |
| 69 | # when a package is filtering -fstack-protector, -fstack-protector-all |
67 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
| 70 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
68 | # need to know which hardened techs are active in the compiler. |
| 71 | # when only -fno-stack-protector is given |
69 | # See bug #100974 |
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70 | # |
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71 | #### has_hardened #### |
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72 | # Returns true if the compiler has 'Hardened' in its version string, |
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73 | # (note; switched-spec vanilla compilers satisfy this condition) or |
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74 | # the specs file name contains 'hardened'. |
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75 | # |
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76 | #### has_pie #### |
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77 | # Returns true if the compiler by default or with current CFLAGS |
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78 | # builds position-independent code. |
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79 | # |
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80 | #### has_pic #### |
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81 | # Returns true if the compiler by default or with current CFLAGS |
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82 | # builds position-independent code. |
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83 | # |
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84 | #### has_ssp_all #### |
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85 | # Returns true if the compiler by default or with current CFLAGS |
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86 | # generates stack smash protections for all functions |
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87 | # |
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88 | #### has_ssp #### |
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89 | # Returns true if the compiler by default or with current CFLAGS |
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90 | # generates stack smash protections for most vulnerable functions |
| 72 | # |
91 | # |
| 73 | |
92 | |
| 74 | # C[XX]FLAGS that we allow in strip-flags |
93 | # C[XX]FLAGS that we allow in strip-flags |
| 75 | setup-allowed-flags() { |
94 | setup-allowed-flags() { |
| 76 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
95 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 77 | export ALLOWED_FLAGS="-pipe" |
96 | export ALLOWED_FLAGS="-pipe" |
| 78 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
97 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
| 79 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" |
98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
| 80 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
| 81 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
| 82 | case "${ARCH}" in |
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| 83 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;; |
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| 84 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
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| 85 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
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| 86 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
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| 87 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
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| 88 | sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;; |
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| 89 | ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;; |
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| 90 | esac |
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|
| 91 | fi |
102 | fi |
| 92 | # allow a bunch of flags that negate features / control ABI |
103 | # allow a bunch of flags that negate features / control ABI |
| 93 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
104 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
| 94 | case "${ARCH}" in |
105 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
| 95 | x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; |
106 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
| 96 | esac |
107 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
| 97 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias" |
108 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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109 | -mieee -mieee-with-inexact \ |
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110 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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111 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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112 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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113 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
| 98 | |
114 | |
| 99 | # C[XX]FLAGS that we are think is ok, but needs testing |
115 | # C[XX]FLAGS that we are think is ok, but needs testing |
| 100 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
116 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 101 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
117 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 102 | return 0 |
118 | return 0 |
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119 | } |
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120 | |
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121 | # inverted filters for hardened compiler. This is trying to unpick |
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122 | # the hardened compiler defaults. |
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123 | _filter-hardened() { |
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124 | local f |
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125 | for f in "$@" ; do |
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126 | case "${f}" in |
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127 | # Ideally we should only concern ourselves with PIE flags, |
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128 | # not -fPIC or -fpic, but too many places filter -fPIC without |
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129 | # thinking about -fPIE. |
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130 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
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131 | gcc-specs-pie || continue |
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132 | is-flagq -nopie || append-flags -nopie;; |
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133 | -fstack-protector) |
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134 | gcc-specs-ssp || continue |
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135 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
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136 | -fstack-protector-all) |
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137 | gcc-specs-ssp-to-all || continue |
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138 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
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139 | esac |
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140 | done |
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141 | } |
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142 | |
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143 | # Remove occurrences of strings from variable given in $1 |
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144 | # Strings removed are matched as globs, so for example |
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145 | # '-O*' would remove -O1, -O2 etc. |
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146 | _filter-var() { |
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147 | local f x VAR VAL |
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148 | declare -a new |
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149 | |
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150 | VAR=$1 |
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151 | shift |
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152 | eval VAL=\${${VAR}} |
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153 | for f in ${VAL}; do |
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154 | for x in "$@"; do |
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155 | # Note this should work with globs like -O* |
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156 | [[ ${f} == ${x} ]] && continue 2 |
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157 | done |
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158 | eval new\[\${\#new\[@]}]=\${f} |
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159 | done |
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160 | eval export ${VAR}=\${new\[*]} |
| 103 | } |
161 | } |
| 104 | |
162 | |
| 105 | filter-flags() { |
163 | filter-flags() { |
| 106 | local x f fset |
164 | _filter-hardened "$@" |
| 107 | declare -a new_CFLAGS new_CXXFLAGS |
165 | _filter-var CFLAGS "$@" |
| 108 | |
166 | _filter-var CXXFLAGS "$@" |
| 109 | for x in "$@" ; do |
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| 110 | case "${x}" in |
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| 111 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
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| 112 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
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| 113 | esac |
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| 114 | done |
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| 115 | |
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| 116 | for fset in CFLAGS CXXFLAGS; do |
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| 117 | # Looping over the flags instead of using a global |
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| 118 | # substitution ensures that we're working with flag atoms. |
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| 119 | # Otherwise globs like -O* have the potential to wipe out the |
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| 120 | # list of flags. |
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| 121 | for f in ${!fset}; do |
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| 122 | for x in "$@"; do |
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| 123 | # Note this should work with globs like -O* |
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| 124 | [[ ${f} == ${x} ]] && continue 2 |
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| 125 | done |
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| 126 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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| 127 | done |
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| 128 | eval export ${fset}=\${new_${fset}\[*]} |
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| 129 | done |
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| 130 | |
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| 131 | return 0 |
167 | return 0 |
| 132 | } |
168 | } |
| 133 | |
169 | |
| 134 | filter-lfs-flags() { |
170 | filter-lfs-flags() { |
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171 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 135 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
172 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 136 | } |
173 | } |
| 137 | |
174 | |
| 138 | append-lfs-flags() { |
175 | append-lfs-flags() { |
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176 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 139 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
177 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 140 | } |
178 | } |
| 141 | |
179 | |
| 142 | append-flags() { |
180 | append-flags() { |
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181 | [[ -z $* ]] && return 0 |
| 143 | export CFLAGS="${CFLAGS} $*" |
182 | export CFLAGS="${CFLAGS} $*" |
| 144 | export CXXFLAGS="${CXXFLAGS} $*" |
183 | export CXXFLAGS="${CXXFLAGS} $*" |
| 145 | [ -n "`is-flag -fno-stack-protector`" -o \ |
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| 146 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
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| 147 | return 0 |
184 | return 0 |
| 148 | } |
185 | } |
| 149 | |
186 | |
| 150 | replace-flags() { |
187 | replace-flags() { |
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188 | [[ $# != 2 ]] \ |
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189 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
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190 | && die "replace-flags takes 2 arguments, not $#" |
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191 | |
| 151 | local f fset |
192 | local f fset |
| 152 | declare -a new_CFLAGS new_CXXFLAGS |
193 | declare -a new_CFLAGS new_CXXFLAGS |
| 153 | |
194 | |
| 154 | for fset in CFLAGS CXXFLAGS; do |
195 | for fset in CFLAGS CXXFLAGS; do |
| 155 | # Looping over the flags instead of using a global |
196 | # Looping over the flags instead of using a global |
| 156 | # substitution ensures that we're working with flag atoms. |
197 | # substitution ensures that we're working with flag atoms. |
| … | |
… | |
| 178 | shift |
219 | shift |
| 179 | done |
220 | done |
| 180 | return 0 |
221 | return 0 |
| 181 | } |
222 | } |
| 182 | |
223 | |
| 183 | is-flag() { |
224 | is-flagq() { |
| 184 | local x |
225 | local x |
| 185 | |
226 | |
| 186 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
227 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
| 187 | # Note this should work with globs like -mcpu=ultrasparc* |
228 | # Note this should work with globs like -mcpu=ultrasparc* |
| 188 | if [[ ${x} == ${1} ]]; then |
229 | if [[ ${x} == ${1} ]]; then |
| 189 | echo true |
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|
| 190 | return 0 |
230 | return 0 |
| 191 | fi |
231 | fi |
| 192 | done |
232 | done |
|
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233 | return 1 |
|
|
234 | } |
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235 | |
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236 | is-flag() { |
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237 | if is-flagq ${1}; then |
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238 | echo true |
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239 | return 0 |
|
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240 | fi |
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241 | return 1 |
|
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242 | } |
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243 | |
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244 | is-ldflagq() { |
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245 | local x |
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246 | |
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247 | for x in ${LDFLAGS} ; do |
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248 | # Note this should work with globs like -mcpu=ultrasparc* |
|
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249 | if [[ ${x} == ${1} ]]; then |
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250 | return 0 |
|
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251 | fi |
|
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252 | done |
|
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253 | return 1 |
|
|
254 | } |
|
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255 | |
|
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256 | is-ldflag() { |
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257 | if is-ldflagq ${1}; then |
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258 | echo true |
|
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259 | return 0 |
|
|
260 | fi |
| 193 | return 1 |
261 | return 1 |
| 194 | } |
262 | } |
| 195 | |
263 | |
| 196 | filter-mfpmath() { |
264 | filter-mfpmath() { |
| 197 | local orig_mfpmath new_math prune_math |
265 | local orig_mfpmath new_math prune_math |
| … | |
… | |
| 226 | |
294 | |
| 227 | local NEW_CFLAGS="" |
295 | local NEW_CFLAGS="" |
| 228 | local NEW_CXXFLAGS="" |
296 | local NEW_CXXFLAGS="" |
| 229 | |
297 | |
| 230 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
298 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 231 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
299 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
| 232 | use debug && einfo "Enabling the use of some unstable flags" |
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| 233 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
300 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 234 | fi |
301 | fi |
| 235 | |
302 | |
| 236 | set -f # disable pathname expansion |
303 | set -f # disable pathname expansion |
| 237 | |
304 | |
| … | |
… | |
| 268 | export CFLAGS="${NEW_CFLAGS}" |
335 | export CFLAGS="${NEW_CFLAGS}" |
| 269 | export CXXFLAGS="${NEW_CXXFLAGS}" |
336 | export CXXFLAGS="${NEW_CXXFLAGS}" |
| 270 | return 0 |
337 | return 0 |
| 271 | } |
338 | } |
| 272 | |
339 | |
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|
340 | test-flag-PROG() { |
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341 | local comp=$1 |
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342 | local flags="$2" |
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343 | |
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344 | [[ -z ${comp} || -z ${flags} ]] && \ |
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345 | return 1 |
|
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346 | |
|
|
347 | local PROG=$(tc-get${comp}) |
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348 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
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349 | > /dev/null 2>&1 |
|
|
350 | } |
|
|
351 | |
|
|
352 | # Returns true if C compiler support given flag |
|
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353 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
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354 | |
|
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355 | # Returns true if C++ compiler support given flag |
|
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356 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
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357 | |
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358 | test-flags-PROG() { |
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359 | local comp=$1 |
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360 | local flags |
|
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361 | local x |
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362 | |
|
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363 | shift |
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364 | |
|
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365 | [[ -z ${comp} ]] && \ |
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366 | return 1 |
|
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367 | |
|
|
368 | for x in "$@" ; do |
|
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369 | test-flag-${comp} "${x}" && flags="${flags} ${x}" |
|
|
370 | done |
|
|
371 | |
|
|
372 | echo "${flags}" |
|
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373 | |
|
|
374 | # Just bail if we dont have any flags |
|
|
375 | [[ -n ${flags} ]] |
|
|
376 | } |
|
|
377 | |
|
|
378 | # Returns (echo's) the given flags supported by the C compiler |
|
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379 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
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380 | |
|
|
381 | # Returns (echo's) the given flags supported by the C++ compiler |
|
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382 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
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383 | |
|
|
384 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
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385 | # its really only present due to the append-flags() abomination. |
|
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386 | test-flags() { test-flags-CC "$@"; } |
|
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387 | |
|
|
388 | # Depriciated, use test-flags() |
| 273 | test_flag() { |
389 | test_flag() { |
| 274 | if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then |
390 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 275 | printf "%s\n" "$*" |
391 | |
| 276 | return 0 |
392 | test-flags-CC "$@" |
| 277 | fi |
|
|
| 278 | return 1 |
|
|
| 279 | } |
393 | } |
| 280 | |
394 | |
| 281 | test_version_info() { |
395 | test_version_info() { |
| 282 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
396 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 283 | return 0 |
397 | return 0 |
| … | |
… | |
| 285 | return 1 |
399 | return 1 |
| 286 | fi |
400 | fi |
| 287 | } |
401 | } |
| 288 | |
402 | |
| 289 | strip-unsupported-flags() { |
403 | strip-unsupported-flags() { |
| 290 | local NEW_CFLAGS NEW_CXXFLAGS |
404 | local x NEW_CFLAGS NEW_CXXFLAGS |
| 291 | |
405 | |
| 292 | for x in ${CFLAGS} ; do |
406 | for x in ${CFLAGS} ; do |
| 293 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
407 | NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})" |
| 294 | done |
408 | done |
| 295 | for x in ${CXXFLAGS} ; do |
409 | for x in ${CXXFLAGS} ; do |
| 296 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
410 | NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})" |
| 297 | done |
411 | done |
| 298 | |
412 | |
| 299 | export CFLAGS="${NEW_CFLAGS}" |
413 | export CFLAGS=${NEW_CFLAGS} |
| 300 | export CXXFLAGS="${NEW_CXXFLAGS}" |
414 | export CXXFLAGS=${NEW_CXXFLAGS} |
| 301 | } |
415 | } |
| 302 | |
416 | |
| 303 | get-flag() { |
417 | get-flag() { |
| 304 | local f findflag="$1" |
418 | local f findflag="$1" |
| 305 | |
419 | |
| … | |
… | |
| 315 | fi |
429 | fi |
| 316 | done |
430 | done |
| 317 | return 1 |
431 | return 1 |
| 318 | } |
432 | } |
| 319 | |
433 | |
|
|
434 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 320 | has_hardened() { |
435 | has_hardened() { |
|
|
436 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
437 | |
| 321 | test_version_info Hardened && return 0 |
438 | test_version_info Hardened && return 0 |
| 322 | # the specs file wont exist unless gcc has GCC_SPECS support |
439 | # The specs file wont exist unless gcc has GCC_SPECS support |
| 323 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
440 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 324 | return 0 |
|
|
| 325 | return 1 |
|
|
| 326 | } |
441 | } |
| 327 | |
442 | |
|
|
443 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
444 | # indicate whether PIC is set |
| 328 | has_pic() { |
445 | has_pic() { |
| 329 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
446 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 330 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
|
|
| 331 | test_version_info pie && return 0 |
|
|
| 332 | return 1 |
|
|
| 333 | } |
|
|
| 334 | |
447 | |
|
|
448 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
449 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
450 | gcc-specs-pie |
|
|
451 | } |
|
|
452 | |
|
|
453 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
454 | # indicate whether PIE is set |
| 335 | has_pie() { |
455 | has_pie() { |
| 336 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
456 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
| 337 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
457 | |
| 338 | test_version_info pie && return 0 |
458 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
| 339 | return 1 |
459 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
460 | gcc-specs-pie |
| 340 | } |
461 | } |
| 341 | |
462 | |
|
|
463 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
464 | # indicate whether code for SSP is being generated for all functions |
|
|
465 | has_ssp_all() { |
|
|
466 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
467 | |
|
|
468 | # note; this matches only -fstack-protector-all |
|
|
469 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
470 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
471 | gcc-specs-ssp-all |
|
|
472 | } |
|
|
473 | |
|
|
474 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
475 | # indicate whether code for SSP is being generated |
| 342 | has_ssp() { |
476 | has_ssp() { |
|
|
477 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
478 | |
|
|
479 | # note; this matches both -fstack-protector and -fstack-protector-all |
| 343 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
480 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
| 344 | test_version_info ssp && return 0 |
481 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
| 345 | return 1 |
482 | gcc-specs-ssp |
| 346 | } |
483 | } |
| 347 | |
484 | |
| 348 | has_m64() { |
485 | has_m64() { |
| 349 | # this doesnt test if the flag is accepted, it tests if the flag |
486 | # this doesnt test if the flag is accepted, it tests if the flag |
| 350 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
487 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 351 | # please dont replace this function with test_flag in some future |
488 | # please dont replace this function with test_flag in some future |
| 352 | # clean-up! |
489 | # clean-up! |
|
|
490 | |
| 353 | local temp="$(emktemp)" |
491 | local temp="$(emktemp)" |
| 354 | echo "int main() { return(0); }" > ${temp}.c |
492 | echo "int main() { return(0); }" > "${temp}".c |
| 355 | MY_CC=$(tc-getCC) |
493 | MY_CC=$(tc-getCC) |
| 356 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
494 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
| 357 | local ret=$? |
495 | local ret=$? |
| 358 | rm -f ${temp}.c |
496 | rm -f "${temp}".c |
| 359 | [ "$ret" != "1" ] && return 0 |
497 | [[ ${ret} != 1 ]] && return 0 |
| 360 | return 1 |
498 | return 1 |
| 361 | } |
499 | } |
| 362 | |
500 | |
| 363 | has_m32() { |
501 | has_m32() { |
| 364 | # this doesnt test if the flag is accepted, it tests if the flag |
502 | # this doesnt test if the flag is accepted, it tests if the flag |
| 365 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
503 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 366 | # please dont replace this function with test_flag in some future |
504 | # please dont replace this function with test_flag in some future |
| 367 | # clean-up! |
505 | # clean-up! |
|
|
506 | |
|
|
507 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
508 | |
| 368 | local temp="$(emktemp)" |
509 | local temp=$(emktemp) |
| 369 | echo "int main() { return(0); }" > ${temp}.c |
510 | echo "int main() { return(0); }" > "${temp}".c |
| 370 | MY_CC=$(tc-getCC) |
511 | MY_CC=$(tc-getCC) |
| 371 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
512 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
| 372 | local ret=$? |
513 | local ret=$? |
| 373 | rm -f ${temp}.c |
514 | rm -f "${temp}".c |
| 374 | [ "$ret" != "1" ] && return 0 |
515 | [[ ${ret} != 1 ]] && return 0 |
| 375 | return 1 |
516 | return 1 |
| 376 | } |
517 | } |
| 377 | |
518 | |
| 378 | replace-sparc64-flags() { |
519 | replace-sparc64-flags() { |
| 379 | local SPARC64_CPUS="ultrasparc v9" |
520 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 380 | |
521 | |
| 381 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
522 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 382 | for x in ${SPARC64_CPUS}; do |
523 | for x in ${SPARC64_CPUS}; do |
| 383 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
524 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 384 | done |
525 | done |
| 385 | else |
526 | else |
| 386 | for x in ${SPARC64_CPUS}; do |
527 | for x in ${SPARC64_CPUS}; do |
| 387 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
528 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 388 | done |
529 | done |
| 389 | fi |
530 | fi |
| 390 | |
531 | |
| 391 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
532 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
| 392 | for x in ${SPARC64_CPUS}; do |
533 | for x in ${SPARC64_CPUS}; do |
| 393 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
534 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 394 | done |
535 | done |
| 395 | else |
536 | else |
| 396 | for x in ${SPARC64_CPUS}; do |
537 | for x in ${SPARC64_CPUS}; do |
| … | |
… | |
| 400 | |
541 | |
| 401 | export CFLAGS CXXFLAGS |
542 | export CFLAGS CXXFLAGS |
| 402 | } |
543 | } |
| 403 | |
544 | |
| 404 | append-ldflags() { |
545 | append-ldflags() { |
|
|
546 | [[ -z $* ]] && return 0 |
| 405 | export LDFLAGS="${LDFLAGS} $*" |
547 | export LDFLAGS="${LDFLAGS} $*" |
| 406 | return 0 |
548 | return 0 |
| 407 | } |
549 | } |
| 408 | |
550 | |
|
|
551 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
|
|
552 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
| 409 | filter-ldflags() { |
553 | filter-ldflags() { |
| 410 | local x |
554 | _filter-var LDFLAGS "$@" |
|
|
555 | return 0 |
|
|
556 | } |
| 411 | |
557 | |
| 412 | # we do this fancy spacing stuff so as to not filter |
558 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
| 413 | # out part of a flag ... we want flag atoms ! :D |
559 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
| 414 | LDFLAGS=" ${LDFLAGS} " |
560 | # to gcc where it needs the '-Wl,'. |
|
|
561 | raw-ldflags() { |
|
|
562 | local x input="$@" |
|
|
563 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
564 | set -- |
| 415 | for x in "$@" ; do |
565 | for x in ${input} ; do |
| 416 | LDFLAGS="${LDFLAGS// ${x} / }" |
566 | x=${x#-Wl,} |
|
|
567 | set -- "$@" ${x//,/ } |
| 417 | done |
568 | done |
| 418 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
569 | echo "$@" |
| 419 | export LDFLAGS |
|
|
| 420 | return 0 |
|
|
| 421 | } |
|
|
| 422 | |
|
|
| 423 | etexec-flags() { |
|
|
| 424 | # if you're not using a hardened compiler you wont need this |
|
|
| 425 | # PIC/no-pic kludge in the first place. |
|
|
| 426 | has_hardened || return 0 |
|
|
| 427 | use amd64 && return 0 |
|
|
| 428 | use mips && return 0 |
|
|
| 429 | |
|
|
| 430 | if has_pie || has_pic; then |
|
|
| 431 | [ -z "`is-flag -fno-pic`" ] && |
|
|
| 432 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
|
|
| 433 | [ -z "`is-flag -nopie`" ] && |
|
|
| 434 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
|
|
| 435 | fi |
|
|
| 436 | return 0 |
|
|
| 437 | } |
|
|
| 438 | |
|
|
| 439 | fstack-flags() { |
|
|
| 440 | if has_ssp; then |
|
|
| 441 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
| 442 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
| 443 | fi |
|
|
| 444 | return 0 |
|
|
| 445 | } |
570 | } |
| 446 | |
571 | |
| 447 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
572 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
| 448 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
573 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
| 449 | # fixes. |
574 | # fixes. |
| 450 | # |
575 | # |
| 451 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
576 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
| 452 | gcc2-flags() { |
577 | gcc2-flags() { |
| 453 | CFLAGS=${CFLAGS//pentium-mmx/i586} |
578 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
| 454 | CFLAGS=${CFLAGS//pentium[234]/i686} |
579 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
| 455 | CFLAGS=${CFLAGS//k6-[23]/k6} |
580 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
| 456 | CFLAGS=${CFLAGS//athlon-tbird/i686} |
|
|
| 457 | CFLAGS=${CFLAGS//athlon-4/i686} |
|
|
| 458 | CFLAGS=${CFLAGS//athlon-[xm]p/i686} |
|
|
| 459 | CFLAGS=${CFLAGS//athlon/i686} |
|
|
| 460 | |
|
|
| 461 | CXXFLAGS=${CXXFLAGS//pentium-mmx/i586} |
|
|
| 462 | CXXFLAGS=${CXXFLAGS//pentium[234]/i686} |
|
|
| 463 | CXXFLAGS=${CXXFLAGS//k6-[23]/k6} |
|
|
| 464 | CXXFLAGS=${CXXFLAGS//athlon-tbird/i686} |
|
|
| 465 | CXXFLAGS=${CXXFLAGS//athlon-4/i686} |
|
|
| 466 | CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686} |
|
|
| 467 | CXXFLAGS=${CXXFLAGS//athlon/i686} |
|
|
| 468 | |
|
|
| 469 | if [ "$ARCH" = alpha ]; then |
|
|
| 470 | CHOST=${CHOST/#alphaev6[78]/alphaev6} |
|
|
| 471 | CFLAGS=${CFLAGS//ev6[78]/ev6} |
|
|
| 472 | CXXFLAGS=${CXXFLAGS//ev6[78]/ev6} |
|
|
| 473 | fi |
581 | fi |
|
|
582 | |
|
|
583 | replace-cpu-flags k6-{2,3} k6 |
|
|
584 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
|
|
585 | |
|
|
586 | replace-cpu-flags pentium-mmx i586 |
|
|
587 | replace-cpu-flags pentium{2,3,4} i686 |
|
|
588 | |
|
|
589 | replace-cpu-flags ev6{7,8} ev6 |
| 474 | |
590 | |
| 475 | export CFLAGS CXXFLAGS |
591 | export CFLAGS CXXFLAGS |
| 476 | } |
592 | } |
|
|
593 | |
|
|
594 | # Gets the flags needed for "NOW" binding |
|
|
595 | bindnow-flags() { |
|
|
596 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
597 | *GNU* | *'with BFD'*) # GNU ld |
|
|
598 | echo "-Wl,-z,now" ;; |
|
|
599 | *Apple*) # Darwin ld |
|
|
600 | echo "-bind_at_load" ;; |
|
|
601 | *) |
|
|
602 | # Some linkers just recognize -V instead of -v |
|
|
603 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
604 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
605 | echo "-Wl,-z,now" ;; |
|
|
606 | esac |
|
|
607 | ;; |
|
|
608 | esac |
|
|
609 | } |
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