1 | # Copyright 1999-2003 Gentoo Technologies, Inc. |
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 1.47 2004/04/12 02:33:29 swtaylor 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 |
5 | |
8 | INHERITED="$INHERITED $ECLASS" |
6 | # need access to emktemp() |
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7 | inherit eutils toolchain-funcs multilib |
9 | |
8 | |
10 | # |
9 | # |
11 | #### filter-flags <flags> #### |
10 | #### filter-flags <flags> #### |
12 | # Remove particular flags from C[XX]FLAGS |
11 | # Remove particular flags from C[XX]FLAGS |
13 | # Matches only complete flags |
12 | # Matches only complete flags |
… | |
… | |
16 | # Add extra flags to your current C[XX]FLAGS |
15 | # Add extra flags to your current C[XX]FLAGS |
17 | # |
16 | # |
18 | #### replace-flags <orig.flag> <new.flag> ### |
17 | #### replace-flags <orig.flag> <new.flag> ### |
19 | # Replace a flag by another one |
18 | # Replace a flag by another one |
20 | # |
19 | # |
21 | #### replace-cpu-flags <new.cpu> <old.cpus> ### |
20 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
22 | # Replace march/mcpu flags that specify <old.cpus> |
21 | # Replace march/mcpu flags that specify <old.cpus> |
23 | # with flags that specify <new.cpu> |
22 | # with flags that specify <new.cpu> |
24 | # |
23 | # |
25 | #### is-flag <flag> #### |
24 | #### is-flag[q] <flag> #### |
26 | # Returns "true" if flag is set in C[XX]FLAGS |
25 | # Returns "true" if flag is set in C[XX]FLAGS |
27 | # 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 |
28 | # |
33 | # |
29 | #### strip-flags #### |
34 | #### strip-flags #### |
30 | # Strip C[XX]FLAGS of everything except known |
35 | # Strip C[XX]FLAGS of everything except known |
31 | # good options. |
36 | # good options. |
32 | # |
37 | # |
… | |
… | |
51 | # |
56 | # |
52 | #### filter-ldflags <flags> #### |
57 | #### filter-ldflags <flags> #### |
53 | # Remove particular flags from LDFLAGS |
58 | # Remove particular flags from LDFLAGS |
54 | # Matches only complete flags |
59 | # Matches only complete flags |
55 | # |
60 | # |
56 | #### etexec-flags #### |
61 | #### bindnow-flags #### |
57 | # hooked function for hardened-gcc that appends |
62 | # Returns the flags to enable "now" binding in the current selected linker. |
58 | # -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed |
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59 | # and a package is filtering -fPIC,-fpic, -fPIE, -fpie |
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60 | # |
63 | # |
61 | #### fstack-flags #### |
64 | ################ DEPRECATED functions ################ |
62 | # hooked function for hardened-gcc that appends |
65 | # The following are still present to avoid breaking existing |
63 | # -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed |
66 | # code more than necessary; however they are deprecated. Please |
64 | # and a package is filtering -fstack-protector, -fstack-protector-all |
67 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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68 | # need to know which hardened techs are active in the compiler. |
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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 |
65 | # |
91 | # |
66 | |
92 | |
67 | # C[XX]FLAGS that we allow in strip-flags |
93 | # C[XX]FLAGS that we allow in strip-flags |
68 | setup-allowed-flags() { |
94 | setup-allowed-flags() { |
69 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
95 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
70 | export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" |
96 | export ALLOWED_FLAGS="-pipe" |
71 | case "${ARCH}" in |
97 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
72 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; |
98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
73 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
74 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
75 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
76 | esac |
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77 | fi |
102 | fi |
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103 | # allow a bunch of flags that negate features / control ABI |
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104 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
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105 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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106 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
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107 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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108 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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109 | -mieee -mieee-with-inexact \ |
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110 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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111 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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112 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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113 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
78 | |
114 | |
79 | # C[XX]FLAGS that we are think is ok, but needs testing |
115 | # C[XX]FLAGS that we are think is ok, but needs testing |
80 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
116 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
81 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
117 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
82 | return 0 |
118 | return 0 |
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119 | } |
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120 | |
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121 | # inverted filters for hardened compiler. This is trying to unpick |
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122 | # the hardened compiler defaults. |
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123 | _filter-hardened() { |
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124 | local f |
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125 | for f in "$@" ; 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\[*]} |
83 | } |
161 | } |
84 | |
162 | |
85 | filter-flags() { |
163 | filter-flags() { |
86 | for x in "$@" ; do |
164 | _filter-hardened "$@" |
87 | case "${x}" in |
165 | _filter-var CFLAGS "$@" |
88 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
166 | _filter-var CXXFLAGS "$@" |
89 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
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90 | *) ;; |
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91 | esac |
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92 | done |
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93 | |
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94 | # we do this fancy spacing stuff so as to not filter |
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95 | # out part of a flag ... we want flag atoms ! :D |
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96 | CFLAGS=" ${CFLAGS} " |
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97 | CXXFLAGS=" ${CXXFLAGS} " |
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98 | for x in "$@" ; do |
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99 | CFLAGS="${CFLAGS// ${x} / }" |
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100 | CXXFLAGS="${CXXFLAGS// ${x} / }" |
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101 | done |
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102 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
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103 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
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104 | return 0 |
167 | return 0 |
105 | } |
168 | } |
106 | |
169 | |
107 | filter-lfs-flags() { |
170 | filter-lfs-flags() { |
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171 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
108 | 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 |
109 | } |
173 | } |
110 | |
174 | |
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175 | append-lfs-flags() { |
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176 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
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177 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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178 | } |
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179 | |
111 | append-flags() { |
180 | append-flags() { |
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181 | [[ -z $* ]] && return 0 |
112 | export CFLAGS="${CFLAGS} $@" |
182 | export CFLAGS="${CFLAGS} $*" |
113 | export CXXFLAGS="${CXXFLAGS} $@" |
183 | export CXXFLAGS="${CXXFLAGS} $*" |
114 | [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
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115 | return 0 |
184 | return 0 |
116 | } |
185 | } |
117 | |
186 | |
118 | replace-flags() { |
187 | replace-flags() { |
119 | # we do this fancy spacing stuff so as to not filter |
188 | [[ $# != 2 ]] \ |
120 | # out part of a flag ... we want flag atoms ! :D |
189 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
121 | CFLAGS=" ${CFLAGS} " |
190 | && die "replace-flags takes 2 arguments, not $#" |
122 | CXXFLAGS=" ${CXXFLAGS} " |
191 | |
123 | CFLAGS="${CFLAGS// ${1} / ${2} }" |
192 | local f fset |
124 | CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" |
193 | declare -a new_CFLAGS new_CXXFLAGS |
125 | CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" |
194 | |
126 | CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" |
195 | for fset in CFLAGS CXXFLAGS; do |
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196 | # Looping over the flags instead of using a global |
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197 | # substitution ensures that we're working with flag atoms. |
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198 | # Otherwise globs like -O* have the potential to wipe out the |
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199 | # list of flags. |
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200 | for f in ${!fset}; do |
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201 | # Note this should work with globs like -O* |
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202 | [[ ${f} == ${1} ]] && f=${2} |
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203 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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204 | done |
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205 | eval export ${fset}=\${new_${fset}\[*]} |
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206 | done |
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207 | |
127 | return 0 |
208 | return 0 |
128 | } |
209 | } |
129 | |
210 | |
130 | replace-cpu-flags() { |
211 | replace-cpu-flags() { |
131 | local newcpu="$1" ; shift |
212 | local newcpu="$#" ; newcpu="${!newcpu}" |
132 | local oldcpu="" |
213 | while [ $# -gt 1 ] ; do |
133 | for oldcpu in "$@" ; do |
214 | # quote to make sure that no globbing is done (particularly on |
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215 | # ${oldcpu} prior to calling replace-flags |
134 | replace-flags -march=${oldcpu} -march=${newcpu} |
216 | replace-flags "-march=${1}" "-march=${newcpu}" |
135 | replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} |
217 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
136 | replace-flags -mtune=${oldcpu} -mtune=${newcpu} |
218 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
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219 | shift |
137 | done |
220 | done |
138 | return 0 |
221 | return 0 |
139 | } |
222 | } |
140 | |
223 | |
141 | is-flag() { |
224 | is-flagq() { |
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225 | local x |
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226 | |
142 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
227 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
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228 | # Note this should work with globs like -mcpu=ultrasparc* |
143 | if [ "${x}" == "$1" ] ; then |
229 | if [[ ${x} == ${1} ]]; then |
144 | echo true |
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145 | return 0 |
230 | return 0 |
146 | fi |
231 | fi |
147 | done |
232 | done |
148 | return 1 |
233 | return 1 |
149 | } |
234 | } |
150 | |
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 |
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254 | } |
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255 | |
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256 | is-ldflag() { |
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257 | if is-ldflagq ${1}; then |
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258 | echo true |
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259 | return 0 |
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260 | fi |
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261 | return 1 |
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262 | } |
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263 | |
151 | filter-mfpmath() { |
264 | filter-mfpmath() { |
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265 | local orig_mfpmath new_math prune_math |
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266 | |
152 | # save the original -mfpmath flag |
267 | # save the original -mfpmath flag |
153 | local orig_mfpmath="`get-flag -mfpmath`" |
268 | orig_mfpmath="`get-flag -mfpmath`" |
154 | # get the value of the current -mfpmath flag |
269 | # get the value of the current -mfpmath flag |
155 | local new_math=" `get-flag mfpmath | tr , ' '` " |
270 | new_math=" `get-flag mfpmath | tr , ' '` " |
156 | # figure out which math values are to be removed |
271 | # figure out which math values are to be removed |
157 | local prune_math="" |
272 | prune_math="" |
158 | for prune_math in "$@" ; do |
273 | for prune_math in "$@" ; do |
159 | new_math="${new_math/ ${prune_math} / }" |
274 | new_math="${new_math/ ${prune_math} / }" |
160 | done |
275 | done |
161 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
276 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
162 | |
277 | |
… | |
… | |
171 | fi |
286 | fi |
172 | return 0 |
287 | return 0 |
173 | } |
288 | } |
174 | |
289 | |
175 | strip-flags() { |
290 | strip-flags() { |
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291 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
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292 | |
176 | setup-allowed-flags |
293 | setup-allowed-flags |
177 | |
294 | |
178 | local NEW_CFLAGS="" |
295 | local NEW_CFLAGS="" |
179 | local NEW_CXXFLAGS="" |
296 | local NEW_CXXFLAGS="" |
180 | |
297 | |
181 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
298 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
182 | if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then |
299 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
183 | [ `use debug` ] && einfo "Enabling the use of some unstable flags" |
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184 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
300 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
185 | fi |
301 | fi |
186 | |
302 | |
187 | set -f |
303 | set -f # disable pathname expansion |
188 | |
304 | |
189 | for x in ${CFLAGS} |
305 | for x in ${CFLAGS}; do |
190 | do |
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191 | for y in ${ALLOWED_FLAGS} |
306 | for y in ${ALLOWED_FLAGS}; do |
192 | do |
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193 | flag=${x%%=*} |
307 | flag=${x%%=*} |
194 | if [ "${flag%%${y}}" = "" ] |
308 | if [ "${flag%%${y}}" = "" ] ; then |
195 | then |
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196 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
309 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
197 | break |
310 | break |
198 | fi |
311 | fi |
199 | done |
312 | done |
200 | done |
313 | done |
201 | |
314 | |
202 | for x in ${CXXFLAGS} |
315 | for x in ${CXXFLAGS}; do |
203 | do |
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204 | for y in ${ALLOWED_FLAGS} |
316 | for y in ${ALLOWED_FLAGS}; do |
205 | do |
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206 | flag=${x%%=*} |
317 | flag=${x%%=*} |
207 | if [ "${flag%%${y}}" = "" ] |
318 | if [ "${flag%%${y}}" = "" ] ; then |
208 | then |
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209 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
319 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
210 | break |
320 | break |
211 | fi |
321 | fi |
212 | done |
322 | done |
213 | done |
323 | done |
… | |
… | |
218 | fi |
328 | fi |
219 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
329 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
220 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
330 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
221 | fi |
331 | fi |
222 | |
332 | |
223 | set +f |
333 | set +f # re-enable pathname expansion |
224 | |
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225 | [ `use debug` ] \ |
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226 | && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \ |
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227 | && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\"" |
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228 | |
334 | |
229 | export CFLAGS="${NEW_CFLAGS}" |
335 | export CFLAGS="${NEW_CFLAGS}" |
230 | export CXXFLAGS="${NEW_CXXFLAGS}" |
336 | export CXXFLAGS="${NEW_CXXFLAGS}" |
231 | return 0 |
337 | return 0 |
232 | } |
338 | } |
233 | |
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 ${flags} ]] && \ |
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345 | return 1 |
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346 | |
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347 | local PROG=$(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 |
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350 | } |
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351 | |
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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 ${comp} ]] && \ |
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366 | return 1 |
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367 | |
|
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368 | for x in "$@" ; do |
|
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369 | test-flag-${comp} "${x}" && flags="${flags} ${x}" |
|
|
370 | done |
|
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371 | |
|
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372 | echo "${flags}" |
|
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373 | |
|
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374 | # Just bail if we dont have any flags |
|
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375 | [[ -n ${flags} ]] |
|
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376 | } |
|
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377 | |
|
|
378 | # Returns (echo's) the given flags supported by the C compiler |
|
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379 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
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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" "$@"; } |
|
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383 | |
|
|
384 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
385 | # its really only present due to the append-flags() abomination. |
|
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386 | test-flags() { test-flags-CC "$@"; } |
|
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387 | |
|
|
388 | # Depriciated, use test-flags() |
234 | test_flag() { |
389 | test_flag() { |
235 | if [ -z "`gcc -S -xc "$@" -o /dev/null /dev/null 2>&1`" ]; then |
390 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
236 | echo "$@" |
391 | |
|
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392 | test-flags-CC "$@" |
|
|
393 | } |
|
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394 | |
|
|
395 | test_version_info() { |
|
|
396 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
237 | return 0 |
397 | return 0 |
238 | fi |
398 | else |
239 | return 1 |
399 | return 1 |
|
|
400 | fi |
240 | } |
401 | } |
241 | |
402 | |
242 | strip-unsupported-flags() { |
403 | strip-unsupported-flags() { |
|
|
404 | local x NEW_CFLAGS NEW_CXXFLAGS |
|
|
405 | |
243 | for x in ${CFLAGS} ; do |
406 | for x in ${CFLAGS} ; do |
244 | NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" |
407 | NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})" |
245 | done |
408 | done |
246 | for x in ${CXXFLAGS} ; do |
409 | for x in ${CXXFLAGS} ; do |
247 | NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" |
410 | NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})" |
248 | done |
411 | done |
249 | |
412 | |
250 | export CFLAGS="${NEW_CFLAGS}" |
413 | export CFLAGS=${NEW_CFLAGS} |
251 | export CXXFLAGS="${NEW_CXXFLAGS}" |
414 | export CXXFLAGS=${NEW_CXXFLAGS} |
252 | } |
415 | } |
253 | |
416 | |
254 | get-flag() { |
417 | get-flag() { |
|
|
418 | local f findflag="$1" |
|
|
419 | |
255 | # this code looks a little flaky but seems to work for |
420 | # this code looks a little flaky but seems to work for |
256 | # everything we want ... |
421 | # everything we want ... |
257 | # for example, if CFLAGS="-march=i686": |
422 | # for example, if CFLAGS="-march=i686": |
258 | # `get-flags -march` == "-march=i686" |
423 | # `get-flag -march` == "-march=i686" |
259 | # `get-flags march` == "i686" |
424 | # `get-flag march` == "i686" |
260 | local findflag="$1" |
|
|
261 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
425 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
262 | if [ "${f/${findflag}}" != "${f}" ] ; then |
426 | if [ "${f/${findflag}}" != "${f}" ] ; then |
263 | echo "${f/-${findflag}=}" |
427 | printf "%s\n" "${f/-${findflag}=}" |
264 | return 0 |
428 | return 0 |
265 | fi |
429 | fi |
266 | done |
430 | done |
267 | return 1 |
431 | return 1 |
268 | } |
432 | } |
269 | |
433 | |
|
|
434 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
|
|
435 | has_hardened() { |
|
|
436 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
437 | |
|
|
438 | test_version_info Hardened && return 0 |
|
|
439 | # The specs file wont exist unless gcc has GCC_SPECS support |
|
|
440 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
|
|
441 | } |
|
|
442 | |
|
|
443 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
444 | # indicate whether PIC is set |
270 | has_pic() { |
445 | has_pic() { |
271 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
446 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
272 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
447 | |
273 | has_version sys-devel/hardened-gcc && return 0 |
448 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
274 | [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 |
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 |
|
|
455 | has_pie() { |
|
|
456 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
457 | |
|
|
458 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
|
|
459 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
460 | gcc-specs-pie |
|
|
461 | } |
|
|
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 |
|
|
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 |
|
|
480 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
|
|
481 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
|
|
482 | gcc-specs-ssp |
|
|
483 | } |
|
|
484 | |
|
|
485 | has_m64() { |
|
|
486 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
487 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
488 | # please dont replace this function with test_flag in some future |
|
|
489 | # clean-up! |
|
|
490 | |
|
|
491 | local temp="$(emktemp)" |
|
|
492 | echo "int main() { return(0); }" > "${temp}".c |
|
|
493 | MY_CC=$(tc-getCC) |
|
|
494 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
495 | local ret=$? |
|
|
496 | rm -f "${temp}".c |
|
|
497 | [[ ${ret} != 1 ]] && return 0 |
275 | return 1 |
498 | return 1 |
276 | } |
499 | } |
277 | |
500 | |
278 | has_pie() { |
501 | has_m32() { |
279 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
502 | # this doesnt test if the flag is accepted, it tests if the flag |
280 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
503 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
281 | has_version sys-devel/hardened-gcc && return 0 |
504 | # please dont replace this function with test_flag in some future |
282 | [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0 |
505 | # clean-up! |
|
|
506 | |
|
|
507 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
508 | |
|
|
509 | local temp=$(emktemp) |
|
|
510 | echo "int main() { return(0); }" > "${temp}".c |
|
|
511 | MY_CC=$(tc-getCC) |
|
|
512 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
513 | local ret=$? |
|
|
514 | rm -f "${temp}".c |
|
|
515 | [[ ${ret} != 1 ]] && return 0 |
283 | return 1 |
516 | return 1 |
284 | } |
517 | } |
285 | |
|
|
286 | has_ssp() { |
|
|
287 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
|
|
288 | has_version sys-devel/hardened-gcc && return 0 |
|
|
289 | [ ! -z "`${CC/ .*/} --version| grep ssp`" ] && return 0 |
|
|
290 | return 1 |
|
|
291 | } |
|
|
292 | |
518 | |
293 | replace-sparc64-flags() { |
519 | replace-sparc64-flags() { |
294 | local SPARC64_CPUS="ultrasparc v9" |
520 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
295 | |
521 | |
296 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] |
522 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
297 | then |
|
|
298 | for x in ${SPARC64_CPUS} |
523 | for x in ${SPARC64_CPUS}; do |
299 | do |
|
|
300 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
524 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
301 | done |
525 | done |
302 | else |
526 | else |
303 | for x in ${SPARC64_CPUS} |
527 | for x in ${SPARC64_CPUS}; do |
304 | do |
|
|
305 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
528 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
306 | done |
529 | done |
307 | fi |
530 | fi |
308 | |
531 | |
309 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] |
532 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
310 | then |
|
|
311 | for x in ${SPARC64_CPUS} |
533 | for x in ${SPARC64_CPUS}; do |
312 | do |
|
|
313 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
534 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
314 | done |
535 | done |
315 | else |
536 | else |
316 | for x in ${SPARC64_CPUS} |
537 | for x in ${SPARC64_CPUS}; do |
317 | do |
|
|
318 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
538 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
319 | done |
539 | done |
320 | fi |
540 | fi |
|
|
541 | |
|
|
542 | export CFLAGS CXXFLAGS |
321 | } |
543 | } |
322 | |
544 | |
323 | append-ldflags() { |
545 | append-ldflags() { |
|
|
546 | [[ -z $* ]] && return 0 |
324 | LDFLAGS="${LDFLAGS} $@" |
547 | export LDFLAGS="${LDFLAGS} $*" |
325 | return 0 |
548 | return 0 |
326 | } |
549 | } |
327 | |
550 | |
|
|
551 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
|
|
552 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
328 | filter-ldflags() { |
553 | filter-ldflags() { |
329 | # we do this fancy spacing stuff so as to not filter |
554 | _filter-var LDFLAGS "$@" |
330 | # out part of a flag ... we want flag atoms ! :D |
555 | return 0 |
331 | LDFLAGS=" ${LDFLAGS} " |
556 | } |
|
|
557 | |
|
|
558 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
|
|
559 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
|
|
560 | # to gcc where it needs the '-Wl,'. |
|
|
561 | raw-ldflags() { |
|
|
562 | local x input="$@" |
|
|
563 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
564 | set -- |
332 | for x in "$@" ; do |
565 | for x in ${input} ; do |
333 | LDFLAGS="${LDFLAGS// ${x} / }" |
566 | x=${x#-Wl,} |
|
|
567 | set -- "$@" ${x//,/ } |
334 | done |
568 | done |
335 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
569 | echo "$@" |
336 | return 0 |
|
|
337 | } |
570 | } |
338 | |
571 | |
339 | etexec-flags() { |
572 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
340 | has_pie || has_pic |
573 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
341 | if [ $? == 0 ] ; then |
574 | # fixes. |
342 | [ -z "`is-flag -yet_exec`" ] && |
575 | # |
343 | export CFLAGS="${CFLAGS} `test_flag -yet_exec`" |
576 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
344 | [ -z "`is-flag -nopie`" ] && |
577 | gcc2-flags() { |
345 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
578 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
|
|
579 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
|
|
580 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
346 | fi |
581 | fi |
347 | } |
|
|
348 | |
582 | |
349 | fstack-flags() { |
583 | replace-cpu-flags k6-{2,3} k6 |
350 | has_ssp |
584 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
351 | if [ $? == 0 ] ; then |
585 | |
352 | [ -z "`is-flag -yno_propolice`" ] && |
586 | replace-cpu-flags pentium-mmx i586 |
353 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
587 | replace-cpu-flags pentium{2,3,4} i686 |
354 | fi |
588 | |
|
|
589 | replace-cpu-flags ev6{7,8} ev6 |
|
|
590 | |
|
|
591 | export CFLAGS CXXFLAGS |
355 | } |
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 | } |