| 1 | # Copyright 1999-2004 Gentoo Foundation |
1 | # Copyright 1999-2007 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 1.120 2007/07/22 08:21:09 dberkholz Exp $ |
| 4 | # |
4 | # |
| 5 | # Author Bart Verwilst <verwilst@gentoo.org> |
5 | # Maintainer: toolchain@gentoo.org |
| 6 | |
|
|
| 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 | |
6 | |
| 12 | # need access to emktemp() |
7 | # need access to emktemp() |
| 13 | inherit eutils toolchain-funcs |
8 | inherit eutils toolchain-funcs multilib |
| 14 | |
9 | |
| 15 | # |
10 | # |
| 16 | #### filter-flags <flags> #### |
11 | #### filter-flags <flags> #### |
| 17 | # Remove particular flags from C[XX]FLAGS |
12 | # Remove particular flags from C[XX]FLAGS |
| 18 | # Matches only complete flags |
13 | # Matches only complete flags |
| … | |
… | |
| 25 | # |
20 | # |
| 26 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
21 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
| 27 | # Replace march/mcpu flags that specify <old.cpus> |
22 | # Replace march/mcpu flags that specify <old.cpus> |
| 28 | # with flags that specify <new.cpu> |
23 | # with flags that specify <new.cpu> |
| 29 | # |
24 | # |
| 30 | #### is-flag <flag> #### |
25 | #### is-flag[q] <flag> #### |
| 31 | # Returns "true" if flag is set in C[XX]FLAGS |
26 | # Returns "true" if flag is set in C[XX]FLAGS |
| 32 | # Matches only complete a flag |
27 | # Matches only complete a flag |
|
|
28 | # q version sets return code but doesn't echo |
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|
29 | # |
|
|
30 | #### is-ldflag[q] <flag> #### |
|
|
31 | # Returns "true" if flag is set in LDFLAGS |
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|
32 | # Matches only complete a flag |
|
|
33 | # q version sets return code but doesn't echo |
| 33 | # |
34 | # |
| 34 | #### strip-flags #### |
35 | #### strip-flags #### |
| 35 | # Strip C[XX]FLAGS of everything except known |
36 | # Strip C[XX]FLAGS of everything except known |
| 36 | # good options. |
37 | # good options. |
| 37 | # |
38 | # |
| … | |
… | |
| 56 | # |
57 | # |
| 57 | #### filter-ldflags <flags> #### |
58 | #### filter-ldflags <flags> #### |
| 58 | # Remove particular flags from LDFLAGS |
59 | # Remove particular flags from LDFLAGS |
| 59 | # Matches only complete flags |
60 | # Matches only complete flags |
| 60 | # |
61 | # |
| 61 | #### etexec-flags #### |
62 | #### bindnow-flags #### |
| 62 | # hooked function for hardened gcc that appends |
63 | # Returns the flags to enable "now" binding in the current selected linker. |
| 63 | # -fno-pic to {C,CXX,LD}FLAGS |
|
|
| 64 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
|
|
| 65 | # |
64 | # |
| 66 | #### fstack-flags #### |
65 | ################ DEPRECATED functions ################ |
| 67 | # hooked function for hardened gcc that appends |
66 | # The following are still present to avoid breaking existing |
| 68 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
67 | # code more than necessary; however they are deprecated. Please |
| 69 | # when a package is filtering -fstack-protector, -fstack-protector-all |
68 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
| 70 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
69 | # need to know which hardened techs are active in the compiler. |
| 71 | # when only -fno-stack-protector is given |
70 | # See bug #100974 |
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|
71 | # |
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|
72 | #### has_hardened #### |
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73 | # Returns true if the compiler has 'Hardened' in its version string, |
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74 | # (note; switched-spec vanilla compilers satisfy this condition) or |
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75 | # the specs file name contains 'hardened'. |
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76 | # |
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77 | #### has_pie #### |
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78 | # Returns true if the compiler by default or with current CFLAGS |
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79 | # builds position-independent code. |
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80 | # |
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81 | #### has_pic #### |
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82 | # Returns true if the compiler by default or with current CFLAGS |
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83 | # builds position-independent code. |
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84 | # |
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85 | #### has_ssp_all #### |
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86 | # Returns true if the compiler by default or with current CFLAGS |
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87 | # generates stack smash protections for all functions |
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88 | # |
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89 | #### has_ssp #### |
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90 | # Returns true if the compiler by default or with current CFLAGS |
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91 | # generates stack smash protections for most vulnerable functions |
| 72 | # |
92 | # |
| 73 | |
93 | |
| 74 | # C[XX]FLAGS that we allow in strip-flags |
94 | # C[XX]FLAGS that we allow in strip-flags |
|
|
95 | # Note: shell globs and character lists are allowed |
| 75 | setup-allowed-flags() { |
96 | setup-allowed-flags() { |
| 76 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
97 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 77 | export ALLOWED_FLAGS="-pipe" |
98 | export ALLOWED_FLAGS="-pipe" |
| 78 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
| 79 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
|
|
101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" |
| 80 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
| 81 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
103 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
| 82 | case "${ARCH}" in |
104 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
| 83 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;; |
|
|
| 84 | amd64) ALLOWED_FLAGS="${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="${ALLOWED_FLAGS} -fPIC" ;; |
|
|
| 88 | sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;; |
105 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
| 89 | ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;; |
|
|
| 90 | esac |
|
|
| 91 | fi |
106 | fi |
| 92 | # allow a bunch of flags that negate features / control ABI |
107 | # allow a bunch of flags that negate features / control ABI |
| 93 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
108 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
| 94 | case "${ARCH}" in |
109 | -fno-strict-aliasing -fno-bounds-checking" |
| 95 | x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; |
110 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
| 96 | esac |
111 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
| 97 | ALLOWED_FLAGS="${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" |
112 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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113 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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114 | -mieee -mieee-with-inexact -mschedule \ |
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115 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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116 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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117 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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118 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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119 | -msecure-plt -D*" |
| 98 | |
120 | |
| 99 | # C[XX]FLAGS that we are think is ok, but needs testing |
121 | # C[XX]FLAGS that we are think is ok, but needs testing |
| 100 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
122 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 101 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
123 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 102 | return 0 |
124 | return 0 |
|
|
125 | } |
|
|
126 | |
|
|
127 | # inverted filters for hardened compiler. This is trying to unpick |
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|
128 | # the hardened compiler defaults. |
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129 | _filter-hardened() { |
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130 | local f |
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131 | for f in "$@" ; do |
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132 | case "${f}" in |
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133 | # Ideally we should only concern ourselves with PIE flags, |
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134 | # not -fPIC or -fpic, but too many places filter -fPIC without |
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135 | # thinking about -fPIE. |
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136 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
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137 | gcc-specs-pie || continue |
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138 | is-flagq -nopie || append-flags -nopie;; |
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139 | -fstack-protector) |
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140 | gcc-specs-ssp || continue |
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141 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
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142 | -fstack-protector-all) |
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143 | gcc-specs-ssp-to-all || continue |
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144 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
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145 | esac |
|
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146 | done |
|
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147 | } |
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148 | |
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149 | # Remove occurrences of strings from variable given in $1 |
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150 | # Strings removed are matched as globs, so for example |
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151 | # '-O*' would remove -O1, -O2 etc. |
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152 | _filter-var() { |
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153 | local f x VAR VAL |
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154 | declare -a new |
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155 | |
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156 | VAR=$1 |
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157 | shift |
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158 | eval VAL=\${${VAR}} |
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159 | for f in ${VAL}; do |
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160 | for x in "$@"; do |
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161 | # Note this should work with globs like -O* |
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162 | [[ ${f} == ${x} ]] && continue 2 |
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163 | done |
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164 | eval new\[\${\#new\[@]}]=\${f} |
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165 | done |
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166 | eval export ${VAR}=\${new\[*]} |
| 103 | } |
167 | } |
| 104 | |
168 | |
| 105 | filter-flags() { |
169 | filter-flags() { |
| 106 | local x f fset |
170 | _filter-hardened "$@" |
| 107 | declare -a new_CFLAGS new_CXXFLAGS |
171 | _filter-var CFLAGS "$@" |
| 108 | |
172 | _filter-var CPPFLAGS "$@" |
| 109 | for x in "$@" ; do |
173 | _filter-var CXXFLAGS "$@" |
| 110 | case "${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 |
174 | return 0 |
| 132 | } |
175 | } |
| 133 | |
176 | |
| 134 | filter-lfs-flags() { |
177 | filter-lfs-flags() { |
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178 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 135 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
179 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 136 | } |
180 | } |
| 137 | |
181 | |
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182 | append-cppflags() { |
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183 | [[ -z $* ]] && return 0 |
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184 | export CPPFLAGS="${CPPFLAGS} $*" |
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185 | return 0 |
|
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186 | } |
|
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187 | |
| 138 | append-lfs-flags() { |
188 | append-lfs-flags() { |
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189 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 139 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
190 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 140 | } |
191 | } |
| 141 | |
192 | |
| 142 | append-flags() { |
193 | append-flags() { |
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194 | [[ -z $* ]] && return 0 |
| 143 | export CFLAGS="${CFLAGS} $*" |
195 | export CFLAGS="${CFLAGS} $*" |
| 144 | export CXXFLAGS="${CXXFLAGS} $*" |
196 | export CXXFLAGS="${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 |
197 | return 0 |
| 148 | } |
198 | } |
| 149 | |
199 | |
| 150 | replace-flags() { |
200 | replace-flags() { |
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201 | [[ $# != 2 ]] \ |
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202 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
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203 | && die "replace-flags takes 2 arguments, not $#" |
|
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204 | |
| 151 | local f fset |
205 | local f fset |
| 152 | declare -a new_CFLAGS new_CXXFLAGS |
206 | declare -a new_CFLAGS new_CXXFLAGS |
| 153 | |
207 | |
| 154 | for fset in CFLAGS CXXFLAGS; do |
208 | for fset in CFLAGS CXXFLAGS; do |
| 155 | # Looping over the flags instead of using a global |
209 | # Looping over the flags instead of using a global |
| 156 | # substitution ensures that we're working with flag atoms. |
210 | # substitution ensures that we're working with flag atoms. |
| … | |
… | |
| 169 | |
223 | |
| 170 | replace-cpu-flags() { |
224 | replace-cpu-flags() { |
| 171 | local newcpu="$#" ; newcpu="${!newcpu}" |
225 | local newcpu="$#" ; newcpu="${!newcpu}" |
| 172 | while [ $# -gt 1 ] ; do |
226 | while [ $# -gt 1 ] ; do |
| 173 | # quote to make sure that no globbing is done (particularly on |
227 | # quote to make sure that no globbing is done (particularly on |
| 174 | # ${oldcpu} prior to calling replace-flags |
228 | # ${oldcpu}) prior to calling replace-flags |
| 175 | replace-flags "-march=${1}" "-march=${newcpu}" |
229 | replace-flags "-march=${1}" "-march=${newcpu}" |
| 176 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
230 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
| 177 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
231 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
| 178 | shift |
232 | shift |
| 179 | done |
233 | done |
| 180 | return 0 |
234 | return 0 |
| 181 | } |
235 | } |
| 182 | |
236 | |
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237 | _is_flagq() { |
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238 | local x |
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239 | for x in ${!1} ; do |
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240 | [[ ${x} == $2 ]] && return 0 |
|
|
241 | done |
|
|
242 | return 1 |
|
|
243 | } |
|
|
244 | |
|
|
245 | is-flagq() { |
|
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246 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
|
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247 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 |
|
|
248 | } |
|
|
249 | |
| 183 | is-flag() { |
250 | is-flag() { |
| 184 | local x |
251 | is-flagq "$@" && echo true |
|
|
252 | } |
| 185 | |
253 | |
| 186 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
254 | is-ldflagq() { |
| 187 | # Note this should work with globs like -mcpu=ultrasparc* |
255 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
| 188 | if [[ ${x} == ${1} ]]; then |
256 | _is_flagq LDFLAGS $1 |
| 189 | echo true |
257 | } |
| 190 | return 0 |
258 | |
| 191 | fi |
259 | is-ldflag() { |
| 192 | done |
260 | is-ldflagq "$@" && echo true |
| 193 | return 1 |
|
|
| 194 | } |
261 | } |
| 195 | |
262 | |
| 196 | filter-mfpmath() { |
263 | filter-mfpmath() { |
| 197 | local orig_mfpmath new_math prune_math |
264 | local orig_mfpmath new_math prune_math |
| 198 | |
265 | |
| 199 | # save the original -mfpmath flag |
266 | # save the original -mfpmath flag |
| 200 | orig_mfpmath="`get-flag -mfpmath`" |
267 | orig_mfpmath=$(get-flag -mfpmath) |
| 201 | # get the value of the current -mfpmath flag |
268 | # get the value of the current -mfpmath flag |
| 202 | new_math=" `get-flag mfpmath | tr , ' '` " |
269 | new_math=$(get-flag mfpmath) |
|
|
270 | new_math=" ${new_math//,/ } " |
| 203 | # figure out which math values are to be removed |
271 | # figure out which math values are to be removed |
| 204 | prune_math="" |
272 | prune_math="" |
| 205 | for prune_math in "$@" ; do |
273 | for prune_math in "$@" ; do |
| 206 | new_math="${new_math/ ${prune_math} / }" |
274 | new_math=${new_math/ ${prune_math} / } |
| 207 | done |
275 | done |
| 208 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
276 | new_math=$(echo ${new_math}) |
|
|
277 | new_math=${new_math// /,} |
| 209 | |
278 | |
| 210 | if [ -z "${new_math}" ] ; then |
279 | if [[ -z ${new_math} ]] ; then |
| 211 | # if we're removing all user specified math values are |
280 | # if we're removing all user specified math values are |
| 212 | # slated for removal, then we just filter the flag |
281 | # slated for removal, then we just filter the flag |
| 213 | filter-flags ${orig_mfpmath} |
282 | filter-flags ${orig_mfpmath} |
| 214 | else |
283 | else |
| 215 | # if we only want to filter some of the user specified |
284 | # if we only want to filter some of the user specified |
| … | |
… | |
| 226 | |
295 | |
| 227 | local NEW_CFLAGS="" |
296 | local NEW_CFLAGS="" |
| 228 | local NEW_CXXFLAGS="" |
297 | local NEW_CXXFLAGS="" |
| 229 | |
298 | |
| 230 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
299 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 231 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
300 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
| 232 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
| 233 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
301 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 234 | fi |
302 | fi |
| 235 | |
303 | |
| 236 | set -f # disable pathname expansion |
304 | set -f # disable pathname expansion |
| 237 | |
305 | |
| … | |
… | |
| 268 | export CFLAGS="${NEW_CFLAGS}" |
336 | export CFLAGS="${NEW_CFLAGS}" |
| 269 | export CXXFLAGS="${NEW_CXXFLAGS}" |
337 | export CXXFLAGS="${NEW_CXXFLAGS}" |
| 270 | return 0 |
338 | return 0 |
| 271 | } |
339 | } |
| 272 | |
340 | |
|
|
341 | test-flag-PROG() { |
|
|
342 | local comp=$1 |
|
|
343 | local flags="$2" |
|
|
344 | |
|
|
345 | [[ -z ${comp} || -z ${flags} ]] && \ |
|
|
346 | return 1 |
|
|
347 | |
|
|
348 | local PROG=$(tc-get${comp}) |
|
|
349 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
350 | > /dev/null 2>&1 |
|
|
351 | } |
|
|
352 | |
|
|
353 | # Returns true if C compiler support given flag |
|
|
354 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
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355 | |
|
|
356 | # Returns true if C++ compiler support given flag |
|
|
357 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
358 | |
|
|
359 | test-flags-PROG() { |
|
|
360 | local comp=$1 |
|
|
361 | local flags |
|
|
362 | local x |
|
|
363 | |
|
|
364 | shift |
|
|
365 | |
|
|
366 | [[ -z ${comp} ]] && return 1 |
|
|
367 | |
|
|
368 | x="" |
|
|
369 | for x in "$@" ; do |
|
|
370 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
371 | done |
|
|
372 | |
|
|
373 | echo "${flags}" |
|
|
374 | |
|
|
375 | # Just bail if we dont have any flags |
|
|
376 | [[ -n ${flags} ]] |
|
|
377 | } |
|
|
378 | |
|
|
379 | # Returns (echo's) the given flags supported by the C compiler |
|
|
380 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
381 | |
|
|
382 | # Returns (echo's) the given flags supported by the C++ compiler |
|
|
383 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
384 | |
|
|
385 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
386 | # its really only present due to the append-flags() abomination. |
|
|
387 | test-flags() { test-flags-CC "$@"; } |
|
|
388 | |
|
|
389 | # Depriciated, use test-flags() |
| 273 | test_flag() { |
390 | test_flag() { |
| 274 | if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then |
391 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 275 | printf "%s\n" "$*" |
392 | |
| 276 | return 0 |
393 | test-flags-CC "$@" |
| 277 | fi |
|
|
| 278 | return 1 |
|
|
| 279 | } |
394 | } |
| 280 | |
395 | |
| 281 | test_version_info() { |
396 | test_version_info() { |
| 282 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
397 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 283 | return 0 |
398 | return 0 |
| … | |
… | |
| 285 | return 1 |
400 | return 1 |
| 286 | fi |
401 | fi |
| 287 | } |
402 | } |
| 288 | |
403 | |
| 289 | strip-unsupported-flags() { |
404 | strip-unsupported-flags() { |
| 290 | local NEW_CFLAGS NEW_CXXFLAGS |
405 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
| 291 | |
406 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
| 292 | for x in ${CFLAGS} ; do |
|
|
| 293 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
|
|
| 294 | done |
|
|
| 295 | for x in ${CXXFLAGS} ; do |
|
|
| 296 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
|
|
| 297 | done |
|
|
| 298 | |
|
|
| 299 | export CFLAGS="${NEW_CFLAGS}" |
|
|
| 300 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
| 301 | } |
407 | } |
| 302 | |
408 | |
| 303 | get-flag() { |
409 | get-flag() { |
| 304 | local f findflag="$1" |
410 | local f findflag="$1" |
| 305 | |
411 | |
| … | |
… | |
| 315 | fi |
421 | fi |
| 316 | done |
422 | done |
| 317 | return 1 |
423 | return 1 |
| 318 | } |
424 | } |
| 319 | |
425 | |
|
|
426 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 320 | has_hardened() { |
427 | has_hardened() { |
|
|
428 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
429 | |
| 321 | test_version_info Hardened && return 0 |
430 | test_version_info Hardened && return 0 |
| 322 | # the specs file wont exist unless gcc has GCC_SPECS support |
431 | # The specs file wont exist unless gcc has GCC_SPECS support |
| 323 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
432 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 324 | return 0 |
|
|
| 325 | return 1 |
|
|
| 326 | } |
433 | } |
| 327 | |
434 | |
|
|
435 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
436 | # indicate whether PIC is set |
| 328 | has_pic() { |
437 | has_pic() { |
| 329 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
438 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 330 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
|
|
| 331 | test_version_info pie && return 0 |
|
|
| 332 | return 1 |
|
|
| 333 | } |
|
|
| 334 | |
439 | |
|
|
440 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
441 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
442 | gcc-specs-pie |
|
|
443 | } |
|
|
444 | |
|
|
445 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
446 | # indicate whether PIE is set |
| 335 | has_pie() { |
447 | has_pie() { |
| 336 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
448 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
| 337 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
449 | |
| 338 | test_version_info pie && return 0 |
450 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
| 339 | return 1 |
451 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
452 | gcc-specs-pie |
| 340 | } |
453 | } |
| 341 | |
454 | |
|
|
455 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
456 | # indicate whether code for SSP is being generated for all functions |
|
|
457 | has_ssp_all() { |
|
|
458 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
459 | |
|
|
460 | # note; this matches only -fstack-protector-all |
|
|
461 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
462 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
463 | gcc-specs-ssp-all |
|
|
464 | } |
|
|
465 | |
|
|
466 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
467 | # indicate whether code for SSP is being generated |
| 342 | has_ssp() { |
468 | has_ssp() { |
|
|
469 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
470 | |
|
|
471 | # note; this matches both -fstack-protector and -fstack-protector-all |
| 343 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
472 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
| 344 | test_version_info ssp && return 0 |
473 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
| 345 | return 1 |
474 | gcc-specs-ssp |
| 346 | } |
475 | } |
| 347 | |
476 | |
| 348 | has_m64() { |
477 | has_m64() { |
| 349 | # this doesnt test if the flag is accepted, it tests if the flag |
478 | # this doesnt test if the flag is accepted, it tests if the flag |
| 350 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
479 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 351 | # please dont replace this function with test_flag in some future |
480 | # please dont replace this function with test_flag in some future |
| 352 | # clean-up! |
481 | # clean-up! |
|
|
482 | |
| 353 | local temp="$(emktemp)" |
483 | local temp="$(emktemp)" |
| 354 | echo "int main() { return(0); }" > ${temp}.c |
484 | echo "int main() { return(0); }" > "${temp}".c |
| 355 | MY_CC=$(tc-getCC) |
485 | MY_CC=$(tc-getCC) |
| 356 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
486 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
| 357 | local ret=$? |
487 | local ret=$? |
| 358 | rm -f ${temp}.c |
488 | rm -f "${temp}".c |
| 359 | [ "$ret" != "1" ] && return 0 |
489 | [[ ${ret} != 1 ]] && return 0 |
| 360 | return 1 |
490 | return 1 |
| 361 | } |
491 | } |
| 362 | |
492 | |
| 363 | has_m32() { |
493 | has_m32() { |
| 364 | # this doesnt test if the flag is accepted, it tests if the flag |
494 | # this doesnt test if the flag is accepted, it tests if the flag |
| 365 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
495 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 366 | # please dont replace this function with test_flag in some future |
496 | # please dont replace this function with test_flag in some future |
| 367 | # clean-up! |
497 | # clean-up! |
|
|
498 | |
|
|
499 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
500 | |
| 368 | local temp="$(emktemp)" |
501 | local temp=$(emktemp) |
| 369 | echo "int main() { return(0); }" > ${temp}.c |
502 | echo "int main() { return(0); }" > "${temp}".c |
| 370 | MY_CC=$(tc-getCC) |
503 | MY_CC=$(tc-getCC) |
| 371 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
504 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
| 372 | local ret=$? |
505 | local ret=$? |
| 373 | rm -f ${temp}.c |
506 | rm -f "${temp}".c |
| 374 | [ "$ret" != "1" ] && return 0 |
507 | [[ ${ret} != 1 ]] && return 0 |
| 375 | return 1 |
508 | return 1 |
| 376 | } |
509 | } |
| 377 | |
510 | |
| 378 | replace-sparc64-flags() { |
511 | replace-sparc64-flags() { |
| 379 | local SPARC64_CPUS="ultrasparc v9" |
512 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 380 | |
513 | |
| 381 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
514 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 382 | for x in ${SPARC64_CPUS}; do |
515 | for x in ${SPARC64_CPUS}; do |
| 383 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
516 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 384 | done |
517 | done |
| 385 | else |
518 | else |
| 386 | for x in ${SPARC64_CPUS}; do |
519 | for x in ${SPARC64_CPUS}; do |
| 387 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
520 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 388 | done |
521 | done |
| 389 | fi |
522 | fi |
| 390 | |
523 | |
| 391 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
524 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
| 392 | for x in ${SPARC64_CPUS}; do |
525 | for x in ${SPARC64_CPUS}; do |
| 393 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
526 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
| 394 | done |
527 | done |
| 395 | else |
528 | else |
| 396 | for x in ${SPARC64_CPUS}; do |
529 | for x in ${SPARC64_CPUS}; do |
| 397 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
530 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
| 398 | done |
531 | done |
| 399 | fi |
532 | fi |
| 400 | |
533 | |
| 401 | export CFLAGS CXXFLAGS |
534 | export CFLAGS CXXFLAGS |
| 402 | } |
535 | } |
| 403 | |
536 | |
| 404 | append-ldflags() { |
537 | append-ldflags() { |
|
|
538 | [[ -z $* ]] && return 0 |
| 405 | export LDFLAGS="${LDFLAGS} $*" |
539 | export LDFLAGS="${LDFLAGS} $*" |
| 406 | return 0 |
540 | return 0 |
| 407 | } |
541 | } |
| 408 | |
542 | |
|
|
543 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
|
|
544 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
| 409 | filter-ldflags() { |
545 | filter-ldflags() { |
| 410 | local x |
546 | _filter-var LDFLAGS "$@" |
|
|
547 | return 0 |
|
|
548 | } |
| 411 | |
549 | |
| 412 | # we do this fancy spacing stuff so as to not filter |
550 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
| 413 | # out part of a flag ... we want flag atoms ! :D |
551 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
| 414 | LDFLAGS=" ${LDFLAGS} " |
552 | # to gcc where it needs the '-Wl,'. |
|
|
553 | raw-ldflags() { |
|
|
554 | local x input="$@" |
|
|
555 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
556 | set -- |
| 415 | for x in "$@" ; do |
557 | for x in ${input} ; do |
| 416 | LDFLAGS="${LDFLAGS// ${x} / }" |
558 | x=${x#-Wl,} |
|
|
559 | set -- "$@" ${x//,/ } |
| 417 | done |
560 | done |
| 418 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
561 | echo "$@" |
| 419 | export LDFLAGS |
|
|
| 420 | return 0 |
|
|
| 421 | } |
562 | } |
| 422 | |
563 | |
| 423 | etexec-flags() { |
564 | # Gets the flags needed for "NOW" binding |
| 424 | # if you're not using a hardened compiler you wont need this |
565 | bindnow-flags() { |
| 425 | # PIC/no-pic kludge in the first place. |
566 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
| 426 | has_hardened || return 0 |
567 | *GNU* | *'with BFD'*) # GNU ld |
| 427 | use amd64 && return 0 |
568 | echo "-Wl,-z,now" ;; |
| 428 | use mips && return 0 |
569 | *Apple*) # Darwin ld |
| 429 | |
570 | echo "-bind_at_load" ;; |
| 430 | if has_pie || has_pic; then |
571 | *) |
| 431 | [ -z "`is-flag -fno-pic`" ] && |
572 | # Some linkers just recognize -V instead of -v |
| 432 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
573 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
| 433 | [ -z "`is-flag -nopie`" ] && |
574 | *Solaris*) # Solaris accept almost the same GNU options |
| 434 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
575 | echo "-Wl,-z,now" ;; |
| 435 | fi |
576 | esac |
| 436 | return 0 |
577 | ;; |
|
|
578 | esac |
| 437 | } |
579 | } |
| 438 | |
580 | |
| 439 | fstack-flags() { |
|
|
| 440 | if has_ssp; then |
|
|
| 441 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
| 442 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
| 443 | fi |
|
|
| 444 | return 0 |
|
|
| 445 | } |
|
|
| 446 | |
581 | |
| 447 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
582 | # Some tests for when we screw with things and want to make |
| 448 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
583 | # sure we didn't break anything |
| 449 | # fixes. |
584 | #TESTS() { |
|
|
585 | # CFLAGS="-a -b -c=1" |
|
|
586 | # CXXFLAGS="-x -y -z=2" |
|
|
587 | # LDFLAGS="-l -m -n=3" |
| 450 | # |
588 | # |
| 451 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
589 | # die() { exit 1; } |
| 452 | gcc2-flags() { |
590 | # (is-flag 1 2 3) && die |
| 453 | CFLAGS=${CFLAGS//pentium-mmx/i586} |
591 | # (is-ldflag 1 2 3) && die |
| 454 | CFLAGS=${CFLAGS//pentium[234]/i686} |
592 | # |
| 455 | CFLAGS=${CFLAGS//k6-[23]/k6} |
593 | # is-flagq -l && die |
| 456 | CFLAGS=${CFLAGS//athlon-tbird/i686} |
594 | # is-ldflagq -a && die |
| 457 | CFLAGS=${CFLAGS//athlon-4/i686} |
595 | # is-flagq -a || die |
| 458 | CFLAGS=${CFLAGS//athlon-[xm]p/i686} |
596 | # is-flagq -x || die |
| 459 | CFLAGS=${CFLAGS//athlon/i686} |
597 | # is-ldflagq -n=* || die |
| 460 | |
598 | # is-ldflagq -n && die |
| 461 | CXXFLAGS=${CXXFLAGS//pentium-mmx/i586} |
599 | # |
| 462 | CXXFLAGS=${CXXFLAGS//pentium[234]/i686} |
600 | # strip-unsupported-flags |
| 463 | CXXFLAGS=${CXXFLAGS//k6-[23]/k6} |
601 | # [[ ${CFLAGS} == "-c=1" ]] || die |
| 464 | CXXFLAGS=${CXXFLAGS//athlon-tbird/i686} |
602 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
| 465 | CXXFLAGS=${CXXFLAGS//athlon-4/i686} |
603 | # |
| 466 | CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686} |
604 | # echo "All tests pass" |
| 467 | CXXFLAGS=${CXXFLAGS//athlon/i686} |
605 | #} |
| 468 | |
606 | #TESTS |
| 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 |
|
|
| 474 | |
|
|
| 475 | export CFLAGS CXXFLAGS |
|
|
| 476 | } |
|
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