1 | # Copyright 1999-2003 Gentoo Technologies, Inc. |
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 1.28 2003/10/26 00:40:52 vapier Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.119 2007/05/12 11:45:51 vapier Exp $ |
4 | # |
4 | # |
5 | # Author Bart Verwilst <verwilst@gentoo.org> |
5 | # Maintainer: toolchain@gentoo.org |
6 | |
6 | |
7 | ECLASS=flag-o-matic |
7 | # need access to emktemp() |
8 | INHERITED="$INHERITED $ECLASS" |
8 | inherit eutils toolchain-funcs multilib |
9 | |
9 | |
10 | # |
10 | # |
11 | #### filter-flags <flags> #### |
11 | #### filter-flags <flags> #### |
12 | # Remove particular flags from C[XX]FLAGS |
12 | # Remove particular flags from C[XX]FLAGS |
13 | # Matches only complete flags |
13 | # Matches only complete flags |
… | |
… | |
16 | # Add extra flags to your current C[XX]FLAGS |
16 | # Add extra flags to your current C[XX]FLAGS |
17 | # |
17 | # |
18 | #### replace-flags <orig.flag> <new.flag> ### |
18 | #### replace-flags <orig.flag> <new.flag> ### |
19 | # Replace a flag by another one |
19 | # Replace a flag by another one |
20 | # |
20 | # |
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21 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
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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 | # |
21 | #### is-flag <flag> #### |
25 | #### is-flag[q] <flag> #### |
22 | # Returns "true" if flag is set in C[XX]FLAGS |
26 | # Returns "true" if flag is set in C[XX]FLAGS |
23 | # Matches only complete a flag |
27 | # Matches only complete a flag |
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28 | # q version sets return code but doesn't echo |
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29 | # |
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30 | #### is-ldflag[q] <flag> #### |
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31 | # Returns "true" if flag is set in LDFLAGS |
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32 | # Matches only complete a flag |
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33 | # q version sets return code but doesn't echo |
24 | # |
34 | # |
25 | #### strip-flags #### |
35 | #### strip-flags #### |
26 | # Strip C[XX]FLAGS of everything except known |
36 | # Strip C[XX]FLAGS of everything except known |
27 | # good options. |
37 | # good options. |
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38 | # |
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39 | #### strip-unsupported-flags #### |
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40 | # Strip C[XX]FLAGS of any flags not supported by |
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41 | # installed version of gcc |
28 | # |
42 | # |
29 | #### get-flag <flag> #### |
43 | #### get-flag <flag> #### |
30 | # Find and echo the value for a particular flag |
44 | # Find and echo the value for a particular flag |
31 | # |
45 | # |
32 | #### replace-sparc64-flags #### |
46 | #### replace-sparc64-flags #### |
… | |
… | |
39 | # will leave the user with -mfpmath=386 |
53 | # will leave the user with -mfpmath=386 |
40 | # |
54 | # |
41 | #### append-ldflags #### |
55 | #### append-ldflags #### |
42 | # Add extra flags to your current LDFLAGS |
56 | # Add extra flags to your current LDFLAGS |
43 | # |
57 | # |
44 | #### etexec-flags #### |
58 | #### filter-ldflags <flags> #### |
45 | # hooked function for hardened-gcc that appends |
59 | # Remove particular flags from LDFLAGS |
46 | # -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed |
60 | # Matches only complete flags |
47 | # and a package is filtering -fPIC |
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48 | # |
61 | # |
49 | #### fstack-flags #### |
62 | #### bindnow-flags #### |
50 | # hooked function for hardened-gcc that appends |
63 | # Returns the flags to enable "now" binding in the current selected linker. |
51 | # -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed |
64 | # |
52 | # and a package is filtering -fstack-protector |
65 | ################ DEPRECATED functions ################ |
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66 | # The following are still present to avoid breaking existing |
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67 | # code more than necessary; however they are deprecated. Please |
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68 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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69 | # need to know which hardened techs are active in the compiler. |
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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 |
53 | # |
92 | # |
54 | |
93 | |
55 | # C[XX]FLAGS that we allow in strip-flags |
94 | # C[XX]FLAGS that we allow in strip-flags |
56 | ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" |
95 | # Note: shell globs and character lists are allowed |
57 | case "${ARCH}" in |
96 | setup-allowed-flags() { |
58 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; |
97 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
59 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
98 | export ALLOWED_FLAGS="-pipe" |
60 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
61 | esac |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" |
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102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
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103 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
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104 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
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105 | fi |
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106 | # allow a bunch of flags that negate features / control ABI |
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107 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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108 | -fno-strict-aliasing -fno-bounds-checking" |
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109 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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110 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
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111 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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112 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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113 | -mieee -mieee-with-inexact -mschedule \ |
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114 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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115 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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116 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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117 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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118 | -msecure-plt -D*" |
62 | |
119 | |
63 | # C[XX]FLAGS that we are think is ok, but needs testing |
120 | # C[XX]FLAGS that we are think is ok, but needs testing |
64 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
121 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
65 | UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
122 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
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123 | return 0 |
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124 | } |
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125 | |
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126 | # inverted filters for hardened compiler. This is trying to unpick |
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127 | # the hardened compiler defaults. |
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128 | _filter-hardened() { |
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129 | local f |
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130 | for f in "$@" ; do |
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131 | case "${f}" in |
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132 | # Ideally we should only concern ourselves with PIE flags, |
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133 | # not -fPIC or -fpic, but too many places filter -fPIC without |
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134 | # thinking about -fPIE. |
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135 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
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136 | gcc-specs-pie || continue |
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137 | is-flagq -nopie || append-flags -nopie;; |
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138 | -fstack-protector) |
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139 | gcc-specs-ssp || continue |
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140 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
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141 | -fstack-protector-all) |
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142 | gcc-specs-ssp-to-all || continue |
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143 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
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144 | esac |
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145 | done |
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146 | } |
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147 | |
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148 | # Remove occurrences of strings from variable given in $1 |
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149 | # Strings removed are matched as globs, so for example |
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150 | # '-O*' would remove -O1, -O2 etc. |
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151 | _filter-var() { |
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152 | local f x VAR VAL |
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153 | declare -a new |
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154 | |
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155 | VAR=$1 |
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156 | shift |
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157 | eval VAL=\${${VAR}} |
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158 | for f in ${VAL}; do |
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159 | for x in "$@"; do |
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160 | # Note this should work with globs like -O* |
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161 | [[ ${f} == ${x} ]] && continue 2 |
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162 | done |
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163 | eval new\[\${\#new\[@]}]=\${f} |
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164 | done |
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165 | eval export ${VAR}=\${new\[*]} |
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166 | } |
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167 | |
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168 | filter-flags() { |
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169 | _filter-hardened "$@" |
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170 | _filter-var CFLAGS "$@" |
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171 | _filter-var CPPFLAGS "$@" |
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172 | _filter-var CXXFLAGS "$@" |
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173 | return 0 |
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174 | } |
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175 | |
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176 | filter-lfs-flags() { |
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177 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
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178 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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179 | } |
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180 | |
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181 | append-cppflags() { |
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182 | [[ -z $* ]] && return 0 |
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183 | export CPPFLAGS="${CPPFLAGS} $*" |
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184 | return 0 |
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185 | } |
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186 | |
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187 | append-lfs-flags() { |
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188 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
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189 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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190 | } |
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191 | |
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192 | append-flags() { |
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193 | [[ -z $* ]] && return 0 |
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194 | export CFLAGS="${CFLAGS} $*" |
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195 | export CXXFLAGS="${CXXFLAGS} $*" |
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196 | return 0 |
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197 | } |
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198 | |
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199 | replace-flags() { |
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200 | [[ $# != 2 ]] \ |
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201 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
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202 | && die "replace-flags takes 2 arguments, not $#" |
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203 | |
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204 | local f fset |
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205 | declare -a new_CFLAGS new_CXXFLAGS |
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206 | |
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207 | for fset in CFLAGS CXXFLAGS; do |
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208 | # Looping over the flags instead of using a global |
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209 | # substitution ensures that we're working with flag atoms. |
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210 | # Otherwise globs like -O* have the potential to wipe out the |
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211 | # list of flags. |
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212 | for f in ${!fset}; do |
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213 | # Note this should work with globs like -O* |
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214 | [[ ${f} == ${1} ]] && f=${2} |
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215 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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216 | done |
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217 | eval export ${fset}=\${new_${fset}\[*]} |
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218 | done |
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219 | |
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220 | return 0 |
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221 | } |
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222 | |
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223 | replace-cpu-flags() { |
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224 | local newcpu="$#" ; newcpu="${!newcpu}" |
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225 | while [ $# -gt 1 ] ; do |
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226 | # quote to make sure that no globbing is done (particularly on |
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227 | # ${oldcpu}) prior to calling replace-flags |
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228 | replace-flags "-march=${1}" "-march=${newcpu}" |
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229 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
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230 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
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231 | shift |
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232 | done |
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233 | return 0 |
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234 | } |
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235 | |
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236 | _is_flagq() { |
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237 | local x |
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238 | for x in ${!1} ; do |
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239 | [[ ${x} == $2 ]] && return 0 |
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240 | done |
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241 | return 1 |
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242 | } |
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243 | |
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244 | is-flagq() { |
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245 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
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246 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 |
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247 | } |
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248 | |
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249 | is-flag() { |
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250 | is-flagq "$@" && echo true |
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251 | } |
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252 | |
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253 | is-ldflagq() { |
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254 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
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255 | _is_flagq LDFLAGS $1 |
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256 | } |
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257 | |
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258 | is-ldflag() { |
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259 | is-ldflagq "$@" && echo true |
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260 | } |
66 | |
261 | |
67 | filter-mfpmath() { |
262 | filter-mfpmath() { |
68 | for a in $CFLAGS; do |
263 | local orig_mfpmath new_math prune_math |
69 | if [ "${a:0:8}" == "-mfpmath" ]; then |
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70 | orig_mfpmath=$a |
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71 | fi |
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72 | done |
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73 | |
264 | |
74 | mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )" |
265 | # save the original -mfpmath flag |
75 | for b in $@; do |
266 | orig_mfpmath=$(get-flag -mfpmath) |
76 | mfpmath="${mfpmath/$b}" |
267 | # get the value of the current -mfpmath flag |
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268 | new_math=$(get-flag mfpmath) |
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269 | new_math=" ${new_math//,/ } " |
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270 | # figure out which math values are to be removed |
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271 | prune_math="" |
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272 | for prune_math in "$@" ; do |
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273 | new_math=${new_math/ ${prune_math} / } |
77 | done |
274 | done |
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275 | new_math=$(echo ${new_math}) |
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276 | new_math=${new_math// /,} |
78 | |
277 | |
79 | if [ -z "${mfpmath/ }" ]; then |
278 | if [[ -z ${new_math} ]] ; then |
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279 | # if we're removing all user specified math values are |
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280 | # slated for removal, then we just filter the flag |
80 | filter-flags "$orig_mfpmath" |
281 | filter-flags ${orig_mfpmath} |
81 | else |
282 | else |
82 | new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )" |
283 | # if we only want to filter some of the user specified |
83 | replace-flags "$orig_mfpmath" "$new_mfpmath" |
284 | # math values, then we replace the current flag |
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285 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
84 | fi |
286 | fi |
85 | } |
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86 | |
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87 | filter-flags() { |
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88 | # we do two loops to avoid the first and last char from being chomped. |
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89 | for x in $@ ; do |
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90 | case "${x}" in |
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91 | -fPIC) etexec-flags;; |
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92 | -fstack-protector) fstack-flags;; |
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93 | *) ;; |
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94 | esac |
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95 | done |
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96 | # we do this fancy spacing stuff so as to not filter |
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97 | # out part of a flag ... we want flag atoms ! :D |
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98 | CFLAGS=" ${CFLAGS} " |
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99 | CXXFLAGS=" ${CXXFLAGS} " |
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100 | for x in $@ ; do |
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101 | CFLAGS="${CFLAGS/ ${x} / }" |
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102 | CXXFLAGS="${CXXFLAGS/ ${x} / }" |
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103 | done |
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104 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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105 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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106 | } |
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107 | |
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108 | append-flags() { |
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109 | CFLAGS="${CFLAGS} $@" |
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110 | CXXFLAGS="${CXXFLAGS} $@" |
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111 | for x in $@; do |
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112 | [ "${x}" = "-fno-stack-protector" ] && fstack-flags |
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113 | done |
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114 | return 0 |
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115 | } |
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116 | |
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117 | replace-flags() { |
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118 | CFLAGS="${CFLAGS/${1}/${2} }" |
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119 | CXXFLAGS="${CXXFLAGS/${1}/${2} }" |
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120 | return 0 |
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121 | } |
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122 | |
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123 | is-flag() { |
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124 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
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125 | if [ "${x}" == "$1" ] ; then |
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126 | echo true |
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127 | return 0 |
287 | return 0 |
128 | fi |
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129 | done |
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130 | return 1 |
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131 | } |
288 | } |
132 | |
289 | |
133 | strip-flags() { |
290 | strip-flags() { |
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291 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
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292 | |
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293 | setup-allowed-flags |
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294 | |
134 | local NEW_CFLAGS="" |
295 | local NEW_CFLAGS="" |
135 | local NEW_CXXFLAGS="" |
296 | local NEW_CXXFLAGS="" |
136 | |
297 | |
137 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
298 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
138 | if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then |
299 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
139 | [ `use debug` ] && einfo "Enabling the use of some unstable flags" |
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140 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
300 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
141 | fi |
301 | fi |
142 | |
302 | |
143 | set -f |
303 | set -f # disable pathname expansion |
144 | |
304 | |
145 | for x in ${CFLAGS} |
305 | for x in ${CFLAGS}; do |
146 | do |
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147 | for y in ${ALLOWED_FLAGS} |
306 | for y in ${ALLOWED_FLAGS}; do |
148 | do |
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149 | flag=${x%%=*} |
307 | flag=${x%%=*} |
150 | if [ "${flag%%${y}}" = "" ] |
308 | if [ "${flag%%${y}}" = "" ] ; then |
151 | then |
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152 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
309 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
153 | break |
310 | break |
154 | fi |
311 | fi |
155 | done |
312 | done |
156 | done |
313 | done |
157 | |
314 | |
158 | for x in ${CXXFLAGS} |
315 | for x in ${CXXFLAGS}; do |
159 | do |
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160 | for y in ${ALLOWED_FLAGS} |
316 | for y in ${ALLOWED_FLAGS}; do |
161 | do |
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162 | flag=${x%%=*} |
317 | flag=${x%%=*} |
163 | if [ "${flag%%${y}}" = "" ] |
318 | if [ "${flag%%${y}}" = "" ] ; then |
164 | then |
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165 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
319 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
166 | break |
320 | break |
167 | fi |
321 | fi |
168 | done |
322 | done |
169 | done |
323 | done |
170 | |
324 | |
171 | set +f |
325 | # In case we filtered out all optimization flags fallback to -O2 |
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326 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
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327 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
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328 | fi |
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329 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
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330 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
|
|
331 | fi |
172 | |
332 | |
173 | [ `use debug` ] \ |
333 | set +f # re-enable pathname expansion |
174 | && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \ |
|
|
175 | && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\"" |
|
|
176 | |
334 | |
177 | export CFLAGS="${NEW_CFLAGS}" |
335 | export CFLAGS="${NEW_CFLAGS}" |
178 | export CXXFLAGS="${NEW_CXXFLAGS}" |
336 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
337 | return 0 |
|
|
338 | } |
|
|
339 | |
|
|
340 | test-flag-PROG() { |
|
|
341 | local comp=$1 |
|
|
342 | local flags="$2" |
|
|
343 | |
|
|
344 | [[ -z ${comp} || -z ${flags} ]] && \ |
|
|
345 | return 1 |
|
|
346 | |
|
|
347 | local PROG=$(tc-get${comp}) |
|
|
348 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
349 | > /dev/null 2>&1 |
|
|
350 | } |
|
|
351 | |
|
|
352 | # Returns true if C compiler support given flag |
|
|
353 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
354 | |
|
|
355 | # Returns true if C++ compiler support given flag |
|
|
356 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
357 | |
|
|
358 | test-flags-PROG() { |
|
|
359 | local comp=$1 |
|
|
360 | local flags |
|
|
361 | local x |
|
|
362 | |
|
|
363 | shift |
|
|
364 | |
|
|
365 | [[ -z ${comp} ]] && return 1 |
|
|
366 | |
|
|
367 | x="" |
|
|
368 | for x in "$@" ; do |
|
|
369 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
370 | done |
|
|
371 | |
|
|
372 | echo "${flags}" |
|
|
373 | |
|
|
374 | # Just bail if we dont have any flags |
|
|
375 | [[ -n ${flags} ]] |
|
|
376 | } |
|
|
377 | |
|
|
378 | # Returns (echo's) the given flags supported by the C compiler |
|
|
379 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
380 | |
|
|
381 | # Returns (echo's) the given flags supported by the C++ compiler |
|
|
382 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
383 | |
|
|
384 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
385 | # its really only present due to the append-flags() abomination. |
|
|
386 | test-flags() { test-flags-CC "$@"; } |
|
|
387 | |
|
|
388 | # Depriciated, use test-flags() |
|
|
389 | test_flag() { |
|
|
390 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
|
|
391 | |
|
|
392 | test-flags-CC "$@" |
|
|
393 | } |
|
|
394 | |
|
|
395 | test_version_info() { |
|
|
396 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
|
|
397 | return 0 |
|
|
398 | else |
|
|
399 | return 1 |
|
|
400 | fi |
|
|
401 | } |
|
|
402 | |
|
|
403 | strip-unsupported-flags() { |
|
|
404 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
|
|
405 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
179 | } |
406 | } |
180 | |
407 | |
181 | get-flag() { |
408 | get-flag() { |
182 | local findflag="$1" |
409 | local f findflag="$1" |
|
|
410 | |
|
|
411 | # this code looks a little flaky but seems to work for |
|
|
412 | # everything we want ... |
|
|
413 | # for example, if CFLAGS="-march=i686": |
|
|
414 | # `get-flag -march` == "-march=i686" |
|
|
415 | # `get-flag march` == "i686" |
183 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
416 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
184 | if [ "${f/${findflag}}" != "${f}" ] ; then |
417 | if [ "${f/${findflag}}" != "${f}" ] ; then |
185 | echo "${f/-${findflag}=}" |
418 | printf "%s\n" "${f/-${findflag}=}" |
186 | return 0 |
419 | return 0 |
187 | fi |
420 | fi |
188 | done |
421 | done |
189 | return 1 |
422 | return 1 |
190 | } |
423 | } |
191 | |
424 | |
|
|
425 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
|
|
426 | has_hardened() { |
|
|
427 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
428 | |
|
|
429 | test_version_info Hardened && return 0 |
|
|
430 | # The specs file wont exist unless gcc has GCC_SPECS support |
|
|
431 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
|
|
432 | } |
|
|
433 | |
|
|
434 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
435 | # indicate whether PIC is set |
|
|
436 | has_pic() { |
|
|
437 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
438 | |
|
|
439 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
440 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
441 | gcc-specs-pie |
|
|
442 | } |
|
|
443 | |
|
|
444 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
445 | # indicate whether PIE is set |
|
|
446 | has_pie() { |
|
|
447 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
448 | |
|
|
449 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
|
|
450 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
451 | gcc-specs-pie |
|
|
452 | } |
|
|
453 | |
|
|
454 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
455 | # indicate whether code for SSP is being generated for all functions |
|
|
456 | has_ssp_all() { |
|
|
457 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
458 | |
|
|
459 | # note; this matches only -fstack-protector-all |
|
|
460 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
461 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
462 | gcc-specs-ssp-all |
|
|
463 | } |
|
|
464 | |
|
|
465 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
466 | # indicate whether code for SSP is being generated |
|
|
467 | has_ssp() { |
|
|
468 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
469 | |
|
|
470 | # note; this matches both -fstack-protector and -fstack-protector-all |
|
|
471 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
|
|
472 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
|
|
473 | gcc-specs-ssp |
|
|
474 | } |
|
|
475 | |
|
|
476 | has_m64() { |
|
|
477 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
478 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
479 | # please dont replace this function with test_flag in some future |
|
|
480 | # clean-up! |
|
|
481 | |
|
|
482 | local temp="$(emktemp)" |
|
|
483 | echo "int main() { return(0); }" > "${temp}".c |
|
|
484 | MY_CC=$(tc-getCC) |
|
|
485 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
486 | local ret=$? |
|
|
487 | rm -f "${temp}".c |
|
|
488 | [[ ${ret} != 1 ]] && return 0 |
|
|
489 | return 1 |
|
|
490 | } |
|
|
491 | |
|
|
492 | has_m32() { |
|
|
493 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
494 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
495 | # please dont replace this function with test_flag in some future |
|
|
496 | # clean-up! |
|
|
497 | |
|
|
498 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
499 | |
|
|
500 | local temp=$(emktemp) |
|
|
501 | echo "int main() { return(0); }" > "${temp}".c |
|
|
502 | MY_CC=$(tc-getCC) |
|
|
503 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
504 | local ret=$? |
|
|
505 | rm -f "${temp}".c |
|
|
506 | [[ ${ret} != 1 ]] && return 0 |
|
|
507 | return 1 |
|
|
508 | } |
|
|
509 | |
192 | replace-sparc64-flags() { |
510 | replace-sparc64-flags() { |
193 | local SPARC64_CPUS="ultrasparc v9" |
511 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
194 | |
512 | |
195 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] |
513 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
196 | then |
|
|
197 | for x in ${SPARC64_CPUS} |
514 | for x in ${SPARC64_CPUS}; do |
198 | do |
|
|
199 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
515 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
200 | done |
516 | done |
201 | else |
517 | else |
202 | for x in ${SPARC64_CPUS} |
518 | for x in ${SPARC64_CPUS}; do |
203 | do |
|
|
204 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
519 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
205 | done |
520 | done |
206 | fi |
521 | fi |
207 | |
522 | |
208 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] |
523 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
209 | then |
|
|
210 | for x in ${SPARC64_CPUS} |
524 | for x in ${SPARC64_CPUS}; do |
211 | do |
|
|
212 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
525 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
213 | done |
526 | done |
214 | else |
527 | else |
215 | for x in ${SPARC64_CPUS} |
528 | for x in ${SPARC64_CPUS}; do |
216 | do |
|
|
217 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
529 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
218 | done |
530 | done |
219 | fi |
531 | fi |
|
|
532 | |
|
|
533 | export CFLAGS CXXFLAGS |
220 | } |
534 | } |
221 | |
535 | |
222 | append-ldflags() { |
536 | append-ldflags() { |
|
|
537 | [[ -z $* ]] && return 0 |
223 | LDFLAGS="${LDFLAGS} $@" |
538 | export LDFLAGS="${LDFLAGS} $*" |
224 | return 0 |
539 | return 0 |
225 | } |
540 | } |
226 | |
541 | |
227 | etexec-flags() { |
542 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
228 | has_version 'sys-devel/hardened-gcc' && { |
543 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
229 | debug-print ">>> appending flags -yet_exec" |
544 | filter-ldflags() { |
230 | append-flags -yet_exec |
545 | _filter-var LDFLAGS "$@" |
231 | append-ldflags -yet_exec |
546 | return 0 |
232 | } |
|
|
233 | } |
547 | } |
234 | |
548 | |
235 | fstack-flags() { |
549 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
236 | has_version 'sys-devel/hardened-gcc' && { |
550 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
237 | debug-print ">>> appending flags -yno_propolice" |
551 | # to gcc where it needs the '-Wl,'. |
238 | append-flags -yno_propolice |
552 | raw-ldflags() { |
239 | append-ldflags -yno_propolice |
553 | local x input="$@" |
240 | } |
554 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
555 | set -- |
|
|
556 | for x in ${input} ; do |
|
|
557 | x=${x#-Wl,} |
|
|
558 | set -- "$@" ${x//,/ } |
|
|
559 | done |
|
|
560 | echo "$@" |
241 | } |
561 | } |
|
|
562 | |
|
|
563 | # Gets the flags needed for "NOW" binding |
|
|
564 | bindnow-flags() { |
|
|
565 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
566 | *GNU* | *'with BFD'*) # GNU ld |
|
|
567 | echo "-Wl,-z,now" ;; |
|
|
568 | *Apple*) # Darwin ld |
|
|
569 | echo "-bind_at_load" ;; |
|
|
570 | *) |
|
|
571 | # Some linkers just recognize -V instead of -v |
|
|
572 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
573 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
574 | echo "-Wl,-z,now" ;; |
|
|
575 | esac |
|
|
576 | ;; |
|
|
577 | esac |
|
|
578 | } |
|
|
579 | |
|
|
580 | |
|
|
581 | # Some tests for when we screw with things and want to make |
|
|
582 | # sure we didn't break anything |
|
|
583 | #TESTS() { |
|
|
584 | # CFLAGS="-a -b -c=1" |
|
|
585 | # CXXFLAGS="-x -y -z=2" |
|
|
586 | # LDFLAGS="-l -m -n=3" |
|
|
587 | # |
|
|
588 | # die() { exit 1; } |
|
|
589 | # (is-flag 1 2 3) && die |
|
|
590 | # (is-ldflag 1 2 3) && die |
|
|
591 | # |
|
|
592 | # is-flagq -l && die |
|
|
593 | # is-ldflagq -a && die |
|
|
594 | # is-flagq -a || die |
|
|
595 | # is-flagq -x || die |
|
|
596 | # is-ldflagq -n=* || die |
|
|
597 | # is-ldflagq -n && die |
|
|
598 | # |
|
|
599 | # strip-unsupported-flags |
|
|
600 | # [[ ${CFLAGS} == "-c=1" ]] || die |
|
|
601 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
|
|
602 | # |
|
|
603 | # echo "All tests pass" |
|
|
604 | #} |
|
|
605 | #TESTS |