| 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 1.13 2003/03/04 22:07:17 verwilst Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.104 2006/01/14 10:52:12 kevquinn Exp $ |
| 4 | # |
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| 5 | # Author Bart Verwilst <verwilst@gentoo.org> |
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| 6 | |
4 | |
| 7 | ECLASS=flag-o-matic |
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| 8 | INHERITED="$INHERITED $ECLASS" |
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| 9 | |
5 | |
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6 | # need access to emktemp() |
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7 | inherit eutils toolchain-funcs multilib |
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8 | |
| 10 | # |
9 | # |
| 11 | #### filter-flags <flag> #### |
10 | #### filter-flags <flags> #### |
| 12 | # Remove particular flags from C[XX]FLAGS |
11 | # Remove particular flags from C[XX]FLAGS |
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12 | # Matches only complete flags |
| 13 | # |
13 | # |
| 14 | #### append-flags <flag> #### |
14 | #### append-flags <flags> #### |
| 15 | # Add extra flags to your current C[XX]FLAGS |
15 | # Add extra flags to your current C[XX]FLAGS |
| 16 | # |
16 | # |
| 17 | #### replace-flags <orig.flag> <new.flag> ### |
17 | #### replace-flags <orig.flag> <new.flag> ### |
| 18 | # Replace a flag by another one |
18 | # Replace a flag by another one |
| 19 | # |
19 | # |
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20 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
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21 | # Replace march/mcpu flags that specify <old.cpus> |
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22 | # with flags that specify <new.cpu> |
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23 | # |
| 20 | #### is-flag <flag> #### |
24 | #### is-flag <flag> #### |
| 21 | # Returns "true" if flag is set in C[XX]FLAGS |
25 | # Returns "true" if flag is set in C[XX]FLAGS |
| 22 | # Matches only complete flag |
26 | # Matches only complete a flag |
| 23 | # |
27 | # |
| 24 | #### strip-flags #### |
28 | #### strip-flags #### |
| 25 | # Strip C[XX]FLAGS of everything except known |
29 | # Strip C[XX]FLAGS of everything except known |
| 26 | # good options. |
30 | # good options. |
| 27 | # |
31 | # |
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32 | #### strip-unsupported-flags #### |
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33 | # Strip C[XX]FLAGS of any flags not supported by |
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34 | # installed version of gcc |
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35 | # |
| 28 | #### get-flag <flag> #### |
36 | #### get-flag <flag> #### |
| 29 | # Find and echo the value for a particular flag |
37 | # Find and echo the value for a particular flag |
| 30 | # |
38 | # |
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39 | #### replace-sparc64-flags #### |
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40 | # Sets mcpu to v8 and uses the original value |
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41 | # as mtune if none specified. |
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42 | # |
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43 | #### filter-mfpmath <math types> #### |
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44 | # Remove specified math types from the fpmath specification |
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45 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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46 | # will leave the user with -mfpmath=386 |
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47 | # |
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48 | #### append-ldflags #### |
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49 | # Add extra flags to your current LDFLAGS |
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50 | # |
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51 | #### filter-ldflags <flags> #### |
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52 | # Remove particular flags from LDFLAGS |
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53 | # Matches only complete flags |
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54 | # |
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55 | #### fstack-flags #### |
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56 | # hooked function for hardened gcc that appends |
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57 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
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58 | # when a package is filtering -fstack-protector, -fstack-protector-all |
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59 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
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60 | # when only -fno-stack-protector is given |
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61 | # |
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62 | #### bindnow-flags #### |
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63 | # Returns the flags to enable "now" binding in the current selected linker. |
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64 | # |
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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 |
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92 | # |
| 31 | |
93 | |
| 32 | ALLOWED_FLAGS="-O -mcpu -march -pipe -g" |
94 | # C[XX]FLAGS that we allow in strip-flags |
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95 | setup-allowed-flags() { |
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96 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
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97 | export ALLOWED_FLAGS="-pipe" |
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98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
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99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
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101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
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102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
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103 | fi |
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104 | # allow a bunch of flags that negate features / control ABI |
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105 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
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106 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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107 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
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108 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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109 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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110 | -mieee -mieee-with-inexact \ |
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111 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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112 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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113 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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114 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" |
| 33 | |
115 | |
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116 | # C[XX]FLAGS that we are think is ok, but needs testing |
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117 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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118 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
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119 | return 0 |
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120 | } |
| 34 | |
121 | |
| 35 | filter-flags () { |
122 | filter-flags() { |
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123 | local x f fset |
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124 | declare -a new_CFLAGS new_CXXFLAGS |
| 36 | |
125 | |
| 37 | for x in $1 |
126 | for x in "$@" ; do |
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127 | case "${x}" in |
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128 | -fPIC|-fpic|-fPIE|-fpie|-pie) |
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129 | append-flags `test_flag -fno-pie`;; |
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130 | -fstack-protector|-fstack-protector-all) |
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131 | fstack-flags;; |
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132 | esac |
| 38 | do |
133 | done |
| 39 | export CFLAGS="${CFLAGS/${x}}" |
134 | |
| 40 | export CXXFLAGS="${CXXFLAGS/${x}}" |
135 | for fset in CFLAGS CXXFLAGS; do |
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136 | # Looping over the flags instead of using a global |
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137 | # substitution ensures that we're working with flag atoms. |
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138 | # Otherwise globs like -O* have the potential to wipe out the |
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139 | # list of flags. |
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140 | for f in ${!fset}; do |
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141 | for x in "$@"; do |
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142 | # Note this should work with globs like -O* |
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143 | [[ ${f} == ${x} ]] && continue 2 |
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144 | done |
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145 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
| 41 | done |
146 | done |
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147 | eval export ${fset}=\${new_${fset}\[*]} |
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148 | done |
| 42 | |
149 | |
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150 | return 0 |
| 43 | } |
151 | } |
| 44 | |
152 | |
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153 | filter-lfs-flags() { |
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154 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
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155 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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156 | } |
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157 | |
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158 | append-lfs-flags() { |
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159 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
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160 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
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161 | } |
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162 | |
| 45 | append-flags () { |
163 | append-flags() { |
| 46 | |
164 | [[ -z $* ]] && return 0 |
| 47 | CFLAGS="${CFLAGS} $1" |
165 | export CFLAGS="${CFLAGS} $*" |
| 48 | CXXFLAGS="${CXXFLAGS} $1" |
166 | export CXXFLAGS="${CXXFLAGS} $*" |
| 49 | |
167 | [ -n "`is-flag -fno-stack-protector`" -o \ |
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168 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
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169 | return 0 |
| 50 | } |
170 | } |
| 51 | |
171 | |
| 52 | replace-flags () { |
172 | replace-flags() { |
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173 | [[ $# != 2 ]] \ |
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174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
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175 | && die "replace-flags takes 2 arguments, not $#" |
| 53 | |
176 | |
| 54 | CFLAGS="${CFLAGS/${1}/${2} }" |
177 | local f fset |
| 55 | CXXFLAGS="${CXXFLAGS/${1}/${2} }" |
178 | declare -a new_CFLAGS new_CXXFLAGS |
| 56 | |
179 | |
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180 | for fset in CFLAGS CXXFLAGS; do |
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181 | # Looping over the flags instead of using a global |
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182 | # substitution ensures that we're working with flag atoms. |
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183 | # Otherwise globs like -O* have the potential to wipe out the |
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184 | # list of flags. |
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185 | for f in ${!fset}; do |
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186 | # Note this should work with globs like -O* |
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187 | [[ ${f} == ${1} ]] && f=${2} |
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188 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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189 | done |
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190 | eval export ${fset}=\${new_${fset}\[*]} |
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191 | done |
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192 | |
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193 | return 0 |
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194 | } |
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195 | |
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196 | replace-cpu-flags() { |
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197 | local newcpu="$#" ; newcpu="${!newcpu}" |
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198 | while [ $# -gt 1 ] ; do |
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199 | # quote to make sure that no globbing is done (particularly on |
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200 | # ${oldcpu} prior to calling replace-flags |
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201 | replace-flags "-march=${1}" "-march=${newcpu}" |
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202 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
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203 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
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204 | shift |
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205 | done |
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206 | return 0 |
| 57 | } |
207 | } |
| 58 | |
208 | |
| 59 | is-flag() { |
209 | is-flag() { |
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210 | local x |
| 60 | |
211 | |
| 61 | for x in ${CFLAGS} ${CXXFLAGS} |
212 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
| 62 | do |
213 | # Note this should work with globs like -mcpu=ultrasparc* |
| 63 | if [ "${x}" = "$1" ] |
214 | if [[ ${x} == ${1} ]]; then |
| 64 | then |
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| 65 | echo true |
215 | echo true |
| 66 | break |
216 | return 0 |
| 67 | fi |
217 | fi |
| 68 | done |
218 | done |
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219 | return 1 |
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220 | } |
| 69 | |
221 | |
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222 | filter-mfpmath() { |
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223 | local orig_mfpmath new_math prune_math |
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224 | |
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225 | # save the original -mfpmath flag |
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226 | orig_mfpmath="`get-flag -mfpmath`" |
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227 | # get the value of the current -mfpmath flag |
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228 | new_math=" `get-flag mfpmath | tr , ' '` " |
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229 | # figure out which math values are to be removed |
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230 | prune_math="" |
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231 | for prune_math in "$@" ; do |
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232 | new_math="${new_math/ ${prune_math} / }" |
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233 | done |
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234 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
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235 | |
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236 | if [ -z "${new_math}" ] ; then |
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237 | # if we're removing all user specified math values are |
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238 | # slated for removal, then we just filter the flag |
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239 | filter-flags ${orig_mfpmath} |
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240 | else |
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241 | # if we only want to filter some of the user specified |
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242 | # math values, then we replace the current flag |
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243 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
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244 | fi |
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245 | return 0 |
| 70 | } |
246 | } |
| 71 | |
247 | |
| 72 | strip-flags() { |
248 | strip-flags() { |
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249 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
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250 | |
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251 | setup-allowed-flags |
| 73 | |
252 | |
| 74 | local NEW_CFLAGS="" |
253 | local NEW_CFLAGS="" |
| 75 | local NEW_CXXFLAGS="" |
254 | local NEW_CXXFLAGS="" |
| 76 | |
255 | |
| 77 | set -f |
256 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
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257 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
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258 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
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259 | fi |
| 78 | |
260 | |
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261 | set -f # disable pathname expansion |
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262 | |
| 79 | for x in ${CFLAGS} |
263 | for x in ${CFLAGS}; do |
| 80 | do |
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| 81 | for y in ${ALLOWED_FLAGS} |
264 | for y in ${ALLOWED_FLAGS}; do |
| 82 | do |
265 | flag=${x%%=*} |
| 83 | if [ "${x/${y}}" != "${x}" ] |
266 | if [ "${flag%%${y}}" = "" ] ; then |
| 84 | then |
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| 85 | if [ -z "${NEW_CFLAGS}" ] |
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| 86 | then |
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| 87 | NEW_CFLAGS="${x}" |
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| 88 | else |
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| 89 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
267 | NEW_CFLAGS="${NEW_CFLAGS} ${x}" |
| 90 | fi |
268 | break |
| 91 | fi |
269 | fi |
| 92 | done |
270 | done |
| 93 | done |
271 | done |
| 94 | |
272 | |
| 95 | for x in ${CXXFLAGS} |
273 | for x in ${CXXFLAGS}; do |
| 96 | do |
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| 97 | for y in ${ALLOWED_FLAGS} |
274 | for y in ${ALLOWED_FLAGS}; do |
| 98 | do |
275 | flag=${x%%=*} |
| 99 | if [ "${x/${y}}" != "${x}" ] |
276 | if [ "${flag%%${y}}" = "" ] ; then |
| 100 | then |
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| 101 | if [ -z "${NEW_CXXFLAGS}" ] |
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| 102 | then |
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| 103 | NEW_CXXFLAGS="${x}" |
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| 104 | else |
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| 105 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
277 | NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" |
| 106 | fi |
278 | break |
| 107 | fi |
279 | fi |
| 108 | done |
280 | done |
| 109 | done |
281 | done |
| 110 | |
282 | |
| 111 | set +f |
283 | # In case we filtered out all optimization flags fallback to -O2 |
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284 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
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285 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
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286 | fi |
|
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287 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
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288 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
|
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289 | fi |
|
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290 | |
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291 | set +f # re-enable pathname expansion |
| 112 | |
292 | |
| 113 | export CFLAGS="${NEW_CFLAGS}" |
293 | export CFLAGS="${NEW_CFLAGS}" |
| 114 | export CXXFLAGS="${NEW_CXXFLAGS}" |
294 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
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295 | return 0 |
|
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296 | } |
|
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297 | |
|
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298 | test-flag-PROG() { |
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299 | local comp=$1 |
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300 | local flags="$2" |
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301 | |
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302 | [[ -z ${comp} || -z ${flags} ]] && \ |
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303 | return 1 |
|
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304 | |
|
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305 | local PROG=$(tc-get${comp}) |
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306 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
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307 | > /dev/null 2>&1 |
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308 | } |
|
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309 | |
|
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310 | # Returns true if C compiler support given flag |
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311 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
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312 | |
|
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313 | # Returns true if C++ compiler support given flag |
|
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314 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
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315 | |
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316 | test-flags-PROG() { |
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317 | local comp=$1 |
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318 | local flags |
|
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319 | local x |
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320 | |
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321 | shift |
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322 | |
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323 | [[ -z ${comp} ]] && \ |
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324 | return 1 |
|
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325 | |
|
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326 | for x in "$@" ; do |
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327 | test-flag-${comp} "${x}" && flags="${flags} ${x}" |
|
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328 | done |
|
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329 | |
|
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330 | echo "${flags}" |
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331 | |
|
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332 | # Just bail if we dont have any flags |
|
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333 | [[ -n ${flags} ]] |
|
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334 | } |
|
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335 | |
|
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336 | # Returns (echo's) the given flags supported by the C compiler |
|
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337 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
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338 | |
|
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339 | # Returns (echo's) the given flags supported by the C++ compiler |
|
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340 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
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341 | |
|
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342 | # Short-hand that should hopefully work for both C and C++ compiler, but |
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343 | # its really only present due to the append-flags() abomination. |
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344 | test-flags() { test-flags-CC "$@"; } |
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345 | |
|
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346 | # Deprecated, use test-flags() |
|
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347 | test_flag() { |
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348 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
|
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349 | |
|
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350 | test-flags-CC "$@" |
|
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351 | } |
|
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352 | |
|
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353 | test_version_info() { |
|
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354 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
|
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355 | return 0 |
|
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356 | else |
|
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357 | return 1 |
|
|
358 | fi |
|
|
359 | } |
|
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360 | |
|
|
361 | strip-unsupported-flags() { |
|
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362 | local x NEW_CFLAGS NEW_CXXFLAGS |
|
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363 | |
|
|
364 | for x in ${CFLAGS} ; do |
|
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365 | NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})" |
|
|
366 | done |
|
|
367 | for x in ${CXXFLAGS} ; do |
|
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368 | NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})" |
|
|
369 | done |
|
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370 | |
|
|
371 | export CFLAGS=${NEW_CFLAGS} |
|
|
372 | export CXXFLAGS=${NEW_CXXFLAGS} |
| 115 | } |
373 | } |
| 116 | |
374 | |
| 117 | get-flag() { |
375 | get-flag() { |
| 118 | local findflag="$1" |
376 | local f findflag="$1" |
| 119 | |
377 | |
|
|
378 | # this code looks a little flaky but seems to work for |
|
|
379 | # everything we want ... |
|
|
380 | # for example, if CFLAGS="-march=i686": |
|
|
381 | # `get-flag -march` == "-march=i686" |
|
|
382 | # `get-flag march` == "i686" |
| 120 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
383 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
| 121 | if [ "${f/${findflag}}" != "${f}" ] ; then |
384 | if [ "${f/${findflag}}" != "${f}" ] ; then |
| 122 | echo "${f/-${findflag}=}" |
385 | printf "%s\n" "${f/-${findflag}=}" |
| 123 | return |
386 | return 0 |
| 124 | fi |
387 | fi |
| 125 | done |
388 | done |
|
|
389 | return 1 |
| 126 | } |
390 | } |
|
|
391 | |
|
|
392 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
|
|
393 | has_hardened() { |
|
|
394 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
395 | |
|
|
396 | test_version_info Hardened && return 0 |
|
|
397 | # The specs file wont exist unless gcc has GCC_SPECS support |
|
|
398 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
|
|
399 | } |
|
|
400 | |
|
|
401 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
402 | # indicate whether PIC is set |
|
|
403 | has_pic() { |
|
|
404 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
405 | |
|
|
406 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
407 | ${CFLAGS/-fpic} != ${CFLAGS} || \ |
|
|
408 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]] |
|
|
409 | } |
|
|
410 | |
|
|
411 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
412 | # indicate whether PIE is set |
|
|
413 | has_pie() { |
|
|
414 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
|
|
415 | |
|
|
416 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
|
|
417 | ${CFLAGS/-fpie} != ${CFLAGS} || \ |
|
|
418 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \ |
|
|
419 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]] |
|
|
420 | # test PIC while waiting for specs to be updated to generate __PIE__ |
|
|
421 | } |
|
|
422 | |
|
|
423 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
424 | # indicate whether code for SSP is being generated for all functions |
|
|
425 | has_ssp_all() { |
|
|
426 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
427 | |
|
|
428 | # note; this matches only -fstack-protector-all |
|
|
429 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
430 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
431 | gcc-specs-ssp |
|
|
432 | } |
|
|
433 | |
|
|
434 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
435 | # indicate whether code for SSP is being generated |
|
|
436 | has_ssp() { |
|
|
437 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
438 | |
|
|
439 | # note; this matches both -fstack-protector and -fstack-protector-all |
|
|
440 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
|
|
441 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
|
|
442 | gcc-specs-ssp |
|
|
443 | } |
|
|
444 | |
|
|
445 | has_m64() { |
|
|
446 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
447 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
448 | # please dont replace this function with test_flag in some future |
|
|
449 | # clean-up! |
|
|
450 | |
|
|
451 | local temp="$(emktemp)" |
|
|
452 | echo "int main() { return(0); }" > "${temp}".c |
|
|
453 | MY_CC=$(tc-getCC) |
|
|
454 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
455 | local ret=$? |
|
|
456 | rm -f "${temp}".c |
|
|
457 | [[ ${ret} != 1 ]] && return 0 |
|
|
458 | return 1 |
|
|
459 | } |
|
|
460 | |
|
|
461 | has_m32() { |
|
|
462 | # this doesnt test if the flag is accepted, it tests if the flag |
|
|
463 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
|
|
464 | # please dont replace this function with test_flag in some future |
|
|
465 | # clean-up! |
|
|
466 | |
|
|
467 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
468 | |
|
|
469 | local temp=$(emktemp) |
|
|
470 | echo "int main() { return(0); }" > "${temp}".c |
|
|
471 | MY_CC=$(tc-getCC) |
|
|
472 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
|
|
473 | local ret=$? |
|
|
474 | rm -f "${temp}".c |
|
|
475 | [[ ${ret} != 1 ]] && return 0 |
|
|
476 | return 1 |
|
|
477 | } |
|
|
478 | |
|
|
479 | replace-sparc64-flags() { |
|
|
480 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
|
|
481 | |
|
|
482 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
|
|
483 | for x in ${SPARC64_CPUS}; do |
|
|
484 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
|
|
485 | done |
|
|
486 | else |
|
|
487 | for x in ${SPARC64_CPUS}; do |
|
|
488 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
|
|
489 | done |
|
|
490 | fi |
|
|
491 | |
|
|
492 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
|
|
493 | for x in ${SPARC64_CPUS}; do |
|
|
494 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
|
|
495 | done |
|
|
496 | else |
|
|
497 | for x in ${SPARC64_CPUS}; do |
|
|
498 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
|
|
499 | done |
|
|
500 | fi |
|
|
501 | |
|
|
502 | export CFLAGS CXXFLAGS |
|
|
503 | } |
|
|
504 | |
|
|
505 | append-ldflags() { |
|
|
506 | export LDFLAGS="${LDFLAGS} $*" |
|
|
507 | return 0 |
|
|
508 | } |
|
|
509 | |
|
|
510 | filter-ldflags() { |
|
|
511 | local x |
|
|
512 | |
|
|
513 | # we do this fancy spacing stuff so as to not filter |
|
|
514 | # out part of a flag ... we want flag atoms ! :D |
|
|
515 | LDFLAGS=" ${LDFLAGS} " |
|
|
516 | for x in "$@" ; do |
|
|
517 | LDFLAGS=${LDFLAGS// ${x} / } |
|
|
518 | done |
|
|
519 | [[ -z ${LDFLAGS// } ]] \ |
|
|
520 | && LDFLAGS="" \ |
|
|
521 | || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2} |
|
|
522 | export LDFLAGS |
|
|
523 | return 0 |
|
|
524 | } |
|
|
525 | |
|
|
526 | # Turn C style ldflags (-Wl,-foo) into straight ldflags |
|
|
527 | raw-ldflags() { |
|
|
528 | local x input="$@" |
|
|
529 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
530 | set -- |
|
|
531 | for x in ${input} ; do |
|
|
532 | x=${x#-Wl,} |
|
|
533 | set -- "$@" ${x//,/ } |
|
|
534 | done |
|
|
535 | echo "$@" |
|
|
536 | } |
|
|
537 | |
|
|
538 | fstack-flags() { |
|
|
539 | if gcc-specs-ssp; then |
|
|
540 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
541 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
542 | fi |
|
|
543 | return 0 |
|
|
544 | } |
|
|
545 | |
|
|
546 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
|
|
547 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
|
|
548 | # fixes. |
|
|
549 | # |
|
|
550 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
|
|
551 | gcc2-flags() { |
|
|
552 | if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then |
|
|
553 | CFLAGS=${CFLAGS//-mtune=/-mcpu=} |
|
|
554 | CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=} |
|
|
555 | fi |
|
|
556 | |
|
|
557 | replace-cpu-flags k6-{2,3} k6 |
|
|
558 | replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686 |
|
|
559 | |
|
|
560 | replace-cpu-flags pentium-mmx i586 |
|
|
561 | replace-cpu-flags pentium{2,3,4} i686 |
|
|
562 | |
|
|
563 | replace-cpu-flags ev6{7,8} ev6 |
|
|
564 | |
|
|
565 | export CFLAGS CXXFLAGS |
|
|
566 | } |
|
|
567 | |
|
|
568 | # Gets the flags needed for "NOW" binding |
|
|
569 | bindnow-flags() { |
|
|
570 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
|
|
571 | *GNU* | *'with BFD'*) # GNU ld |
|
|
572 | echo "-Wl,-z,now" ;; |
|
|
573 | *Apple*) # Darwin ld |
|
|
574 | echo "-bind_at_load" ;; |
|
|
575 | *) |
|
|
576 | # Some linkers just recognize -V instead of -v |
|
|
577 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
578 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
579 | echo "-Wl,-z,now" ;; |
|
|
580 | esac |
|
|
581 | ;; |
|
|
582 | esac |
|
|
583 | } |
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