| 1 | # Copyright 1999-2006 Gentoo Foundation |
1 | # Copyright 1999-2008 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 1.114 2006/12/27 00:52:12 vapier Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.124 2008/07/03 05:30:54 dberkholz Exp $ |
| 4 | # |
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| 5 | # Maintainer: base-system@gentoo.org |
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| 6 | |
4 | |
| 7 | # need access to emktemp() |
5 | # @ECLASS: flag-o-matic.eclass |
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6 | # @MAINTAINER: |
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7 | # toolchain@gentoo.org |
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8 | # @BLURB: common functions to manipulate and query toolchain flags |
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9 | # @DESCRIPTION: |
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10 | # This eclass contains a suite of functions to help developers sanely |
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11 | # and safely manage toolchain flags in their builds. |
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12 | |
| 8 | inherit eutils toolchain-funcs multilib |
13 | inherit eutils toolchain-funcs multilib |
| 9 | |
14 | |
| 10 | # |
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| 11 | #### filter-flags <flags> #### |
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| 12 | # Remove particular flags from C[XX]FLAGS |
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| 13 | # Matches only complete flags |
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| 14 | # |
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| 15 | #### append-flags <flags> #### |
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| 16 | # Add extra flags to your current C[XX]FLAGS |
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| 17 | # |
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| 18 | #### replace-flags <orig.flag> <new.flag> ### |
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| 19 | # Replace a flag by another one |
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| 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 | # |
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| 25 | #### is-flag[q] <flag> #### |
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| 26 | # Returns "true" if flag is set in C[XX]FLAGS |
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| 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 |
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| 34 | # |
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| 35 | #### strip-flags #### |
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| 36 | # Strip C[XX]FLAGS of everything except known |
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| 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 |
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| 42 | # |
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| 43 | #### get-flag <flag> #### |
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| 44 | # Find and echo the value for a particular flag |
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| 45 | # |
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| 46 | #### replace-sparc64-flags #### |
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| 47 | # Sets mcpu to v8 and uses the original value |
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| 48 | # as mtune if none specified. |
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| 49 | # |
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| 50 | #### filter-mfpmath <math types> #### |
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| 51 | # Remove specified math types from the fpmath specification |
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| 52 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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| 53 | # will leave the user with -mfpmath=386 |
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| 54 | # |
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| 55 | #### append-ldflags #### |
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| 56 | # Add extra flags to your current LDFLAGS |
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| 57 | # |
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| 58 | #### filter-ldflags <flags> #### |
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| 59 | # Remove particular flags from LDFLAGS |
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| 60 | # Matches only complete flags |
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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 ################ |
15 | ################ DEPRECATED functions ################ |
| 66 | # The following are still present to avoid breaking existing |
16 | # The following are still present to avoid breaking existing |
| 67 | # code more than necessary; however they are deprecated. Please |
17 | # code more than necessary; however they are deprecated. Please |
| 68 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
| 69 | # need to know which hardened techs are active in the compiler. |
19 | # need to know which hardened techs are active in the compiler. |
| 70 | # See bug #100974 |
20 | # See bug #100974 |
| 71 | # |
21 | # |
| 72 | #### has_hardened #### |
22 | # has_hardened |
| 73 | # Returns true if the compiler has 'Hardened' in its version string, |
23 | # has_pie |
| 74 | # (note; switched-spec vanilla compilers satisfy this condition) or |
24 | # has_pic |
| 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 #### |
25 | # has_ssp_all |
| 86 | # Returns true if the compiler by default or with current CFLAGS |
26 | # has_ssp |
| 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 | # |
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| 93 | |
27 | |
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28 | |
| 94 | # C[XX]FLAGS that we allow in strip-flags |
29 | # {C,CXX,F,FC}FLAGS that we allow in strip-flags |
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30 | # Note: shell globs and character lists are allowed |
| 95 | setup-allowed-flags() { |
31 | setup-allowed-flags() { |
| 96 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
| 97 | export ALLOWED_FLAGS="-pipe" |
33 | export ALLOWED_FLAGS="-pipe" |
| 98 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
| 99 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
| 100 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" |
36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" |
| 101 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
| 102 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
38 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
| 103 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
39 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
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40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
| 104 | fi |
41 | fi |
| 105 | # allow a bunch of flags that negate features / control ABI |
42 | # allow a bunch of flags that negate features / control ABI |
| 106 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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44 | -fno-strict-aliasing -fno-bounds-checking" |
| 107 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
| 108 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
| 109 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
| 110 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
| 111 | -mieee -mieee-with-inexact -mschedule \ |
49 | -mieee -mieee-with-inexact -mschedule \ |
| 112 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
| 113 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
| 114 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
| 115 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
| 116 | -msecure-plt" |
54 | -msecure-plt -D*" |
| 117 | |
55 | |
| 118 | # C[XX]FLAGS that we are think is ok, but needs testing |
56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
| 119 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
57 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
| 120 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
| 121 | return 0 |
59 | return 0 |
| 122 | } |
60 | } |
| 123 | |
61 | |
| … | |
… | |
| 161 | eval new\[\${\#new\[@]}]=\${f} |
99 | eval new\[\${\#new\[@]}]=\${f} |
| 162 | done |
100 | done |
| 163 | eval export ${VAR}=\${new\[*]} |
101 | eval export ${VAR}=\${new\[*]} |
| 164 | } |
102 | } |
| 165 | |
103 | |
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104 | # @FUNCTION: filter-flags |
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105 | # @USAGE: <flags> |
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106 | # @DESCRIPTION: |
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107 | # Remove particular <flags> from {C,CPP,CXX,F,FC}FLAGS. Accepts shell globs. |
| 166 | filter-flags() { |
108 | filter-flags() { |
| 167 | _filter-hardened "$@" |
109 | _filter-hardened "$@" |
| 168 | _filter-var CFLAGS "$@" |
110 | _filter-var CFLAGS "$@" |
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111 | _filter-var CPPFLAGS "$@" |
| 169 | _filter-var CXXFLAGS "$@" |
112 | _filter-var CXXFLAGS "$@" |
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113 | _filter-var FFLAGS "$@" |
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114 | _filter-var FCFLAGS "$@" |
| 170 | return 0 |
115 | return 0 |
| 171 | } |
116 | } |
| 172 | |
117 | |
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118 | # @FUNCTION: filter-lfs-flags |
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119 | # @DESCRIPTION: |
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120 | # Remove flags that enable Large File Support. |
| 173 | filter-lfs-flags() { |
121 | filter-lfs-flags() { |
| 174 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
122 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
| 175 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
123 | filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 176 | } |
124 | } |
| 177 | |
125 | |
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126 | # @FUNCTION: append-cppflags |
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127 | # @USAGE: <flags> |
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128 | # @DESCRIPTION: |
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129 | # Add extra <flags> to the current CPPFLAGS. |
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130 | append-cppflags() { |
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131 | [[ -z $* ]] && return 0 |
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132 | export CPPFLAGS="${CPPFLAGS} $*" |
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133 | return 0 |
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134 | } |
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135 | |
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136 | # @FUNCTION: append-fflags |
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137 | # @USAGE: <flags> |
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138 | # @DESCRIPTION: |
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139 | # Add extra <flags> to the current {F,FC}FLAGS. |
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140 | append-fflags() { |
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141 | [[ -z $* ]] && return 0 |
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142 | export FFLAGS="${FFLAGS} $*" |
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143 | export FCFLAGS="${FCFLAGS} $*" |
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144 | return 0 |
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145 | } |
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146 | |
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147 | # @FUNCTION: append-lfs-flags |
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148 | # @DESCRIPTION: |
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149 | # Add flags that enable Large File Support. |
| 178 | append-lfs-flags() { |
150 | append-lfs-flags() { |
| 179 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
151 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
| 180 | append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
152 | append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE |
| 181 | } |
153 | } |
| 182 | |
154 | |
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155 | # @FUNCTION: append-flags |
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156 | # @USAGE: <flags> |
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157 | # @DESCRIPTION: |
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158 | # Add extra <flags> to your current {C,CXX,F,FC}FLAGS. |
| 183 | append-flags() { |
159 | append-flags() { |
| 184 | [[ -z $* ]] && return 0 |
160 | [[ -z $* ]] && return 0 |
| 185 | export CFLAGS="${CFLAGS} $*" |
161 | export CFLAGS="${CFLAGS} $*" |
| 186 | export CXXFLAGS="${CXXFLAGS} $*" |
162 | export CXXFLAGS="${CXXFLAGS} $*" |
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163 | export FFLAGS="${FFLAGS} $*" |
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164 | export FCFLAGS="${FCFLAGS} $*" |
| 187 | return 0 |
165 | return 0 |
| 188 | } |
166 | } |
| 189 | |
167 | |
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168 | # @FUNCTION: replace-flags |
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169 | # @USAGE: <old> <new> |
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170 | # @DESCRIPTION: |
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171 | # Replace the <old> flag with <new>. Accepts shell globs for <old>. |
| 190 | replace-flags() { |
172 | replace-flags() { |
| 191 | [[ $# != 2 ]] \ |
173 | [[ $# != 2 ]] \ |
| 192 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
174 | && echo && eerror "Usage: replace-flags <old flag> <new flag>" \ |
| 193 | && die "replace-flags takes 2 arguments, not $#" |
175 | && die "replace-flags takes 2 arguments, not $#" |
| 194 | |
176 | |
| 195 | local f fset |
177 | local f fset |
| 196 | declare -a new_CFLAGS new_CXXFLAGS |
178 | declare -a new_CFLAGS new_CXXFLAGS |
| 197 | |
179 | |
| 198 | for fset in CFLAGS CXXFLAGS; do |
180 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
| 199 | # Looping over the flags instead of using a global |
181 | # Looping over the flags instead of using a global |
| 200 | # substitution ensures that we're working with flag atoms. |
182 | # substitution ensures that we're working with flag atoms. |
| 201 | # Otherwise globs like -O* have the potential to wipe out the |
183 | # Otherwise globs like -O* have the potential to wipe out the |
| 202 | # list of flags. |
184 | # list of flags. |
| 203 | for f in ${!fset}; do |
185 | for f in ${!fset}; do |
| … | |
… | |
| 209 | done |
191 | done |
| 210 | |
192 | |
| 211 | return 0 |
193 | return 0 |
| 212 | } |
194 | } |
| 213 | |
195 | |
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196 | # @FUNCTION: replace-cpu-flags |
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197 | # @USAGE: <old> <new> |
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198 | # @DESCRIPTION: |
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199 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
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200 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
| 214 | replace-cpu-flags() { |
201 | replace-cpu-flags() { |
| 215 | local newcpu="$#" ; newcpu="${!newcpu}" |
202 | local newcpu="$#" ; newcpu="${!newcpu}" |
| 216 | while [ $# -gt 1 ] ; do |
203 | while [ $# -gt 1 ] ; do |
| 217 | # quote to make sure that no globbing is done (particularly on |
204 | # quote to make sure that no globbing is done (particularly on |
| 218 | # ${oldcpu}) prior to calling replace-flags |
205 | # ${oldcpu}) prior to calling replace-flags |
| … | |
… | |
| 230 | [[ ${x} == $2 ]] && return 0 |
217 | [[ ${x} == $2 ]] && return 0 |
| 231 | done |
218 | done |
| 232 | return 1 |
219 | return 1 |
| 233 | } |
220 | } |
| 234 | |
221 | |
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222 | # @FUNCTION: is-flagq |
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223 | # @USAGE: <flag> |
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224 | # @DESCRIPTION: |
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225 | # Returns shell true if <flag> is in {C,CXX,F,FC}FLAGS, else returns shell false. Accepts shell globs. |
| 235 | is-flagq() { |
226 | is-flagq() { |
| 236 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
227 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
| 237 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 |
228 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
| 238 | } |
229 | } |
| 239 | |
230 | |
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231 | # @FUNCTION: is-flag |
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232 | # @USAGE: <flag> |
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233 | # @DESCRIPTION: |
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234 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
| 240 | is-flag() { |
235 | is-flag() { |
| 241 | is-flagq "$@" && echo true |
236 | is-flagq "$@" && echo true |
| 242 | } |
237 | } |
| 243 | |
238 | |
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239 | # @FUNCTION: is-ldflagq |
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240 | # @USAGE: <flag> |
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241 | # @DESCRIPTION: |
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242 | # Returns shell true if <flag> is in LDFLAGS, else returns shell false. Accepts shell globs. |
| 244 | is-ldflagq() { |
243 | is-ldflagq() { |
| 245 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
244 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
| 246 | _is_flagq LDFLAGS $1 |
245 | _is_flagq LDFLAGS $1 |
| 247 | } |
246 | } |
| 248 | |
247 | |
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248 | # @FUNCTION: is-ldflag |
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249 | # @USAGE: <flag> |
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250 | # @DESCRIPTION: |
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251 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
| 249 | is-ldflag() { |
252 | is-ldflag() { |
| 250 | is-ldflagq "$@" && echo true |
253 | is-ldflagq "$@" && echo true |
| 251 | } |
254 | } |
| 252 | |
255 | |
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256 | # @FUNCTION: filter-mfpmath |
|
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257 | # @USAGE: <math types> |
|
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258 | # @DESCRIPTION: |
|
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259 | # Remove specified math types from the fpmath flag. For example, if the user |
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260 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
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261 | # -mfpmath=386. |
| 253 | filter-mfpmath() { |
262 | filter-mfpmath() { |
| 254 | local orig_mfpmath new_math prune_math |
263 | local orig_mfpmath new_math prune_math |
| 255 | |
264 | |
| 256 | # save the original -mfpmath flag |
265 | # save the original -mfpmath flag |
| 257 | orig_mfpmath=$(get-flag -mfpmath) |
266 | orig_mfpmath=$(get-flag -mfpmath) |
| … | |
… | |
| 276 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
285 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
| 277 | fi |
286 | fi |
| 278 | return 0 |
287 | return 0 |
| 279 | } |
288 | } |
| 280 | |
289 | |
|
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290 | # @FUNCTION: strip-flags |
|
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291 | # @DESCRIPTION: |
|
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292 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
| 281 | strip-flags() { |
293 | strip-flags() { |
| 282 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
294 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
| 283 | |
295 | |
| 284 | setup-allowed-flags |
296 | setup-allowed-flags |
| 285 | |
297 | |
| 286 | local NEW_CFLAGS="" |
298 | local NEW_CFLAGS="" |
| 287 | local NEW_CXXFLAGS="" |
299 | local NEW_CXXFLAGS="" |
|
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300 | local NEW_FFLAGS="" |
|
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301 | local NEW_FCFLAGS="" |
| 288 | |
302 | |
| 289 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
303 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
| 290 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
304 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
| 291 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
305 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
| 292 | fi |
306 | fi |
| … | |
… | |
| 311 | break |
325 | break |
| 312 | fi |
326 | fi |
| 313 | done |
327 | done |
| 314 | done |
328 | done |
| 315 | |
329 | |
|
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330 | for x in ${FFLAGS}; do |
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331 | for y in ${ALLOWED_FLAGS}; do |
|
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332 | flag=${x%%=*} |
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333 | if [ "${flag%%${y}}" = "" ] ; then |
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334 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
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335 | break |
|
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336 | fi |
|
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337 | done |
|
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338 | done |
|
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339 | |
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340 | for x in ${FCFLAGS}; do |
|
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341 | for y in ${ALLOWED_FLAGS}; do |
|
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342 | flag=${x%%=*} |
|
|
343 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
344 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
345 | break |
|
|
346 | fi |
|
|
347 | done |
|
|
348 | done |
|
|
349 | |
| 316 | # In case we filtered out all optimization flags fallback to -O2 |
350 | # In case we filtered out all optimization flags fallback to -O2 |
| 317 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
351 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
| 318 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
352 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
| 319 | fi |
353 | fi |
| 320 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
354 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
| 321 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
355 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
| 322 | fi |
356 | fi |
|
|
357 | if [ "${FFLAGS/-O}" != "${FFLAGS}" -a "${NEW_FFLAGS/-O}" = "${NEW_FFLAGS}" ]; then |
|
|
358 | NEW_FFLAGS="${NEW_FFLAGS} -O2" |
|
|
359 | fi |
|
|
360 | if [ "${FCFLAGS/-O}" != "${FCFLAGS}" -a "${NEW_FCFLAGS/-O}" = "${NEW_FCFLAGS}" ]; then |
|
|
361 | NEW_FCFLAGS="${NEW_FCFLAGS} -O2" |
|
|
362 | fi |
| 323 | |
363 | |
| 324 | set +f # re-enable pathname expansion |
364 | set +f # re-enable pathname expansion |
| 325 | |
365 | |
| 326 | export CFLAGS="${NEW_CFLAGS}" |
366 | export CFLAGS="${NEW_CFLAGS}" |
| 327 | export CXXFLAGS="${NEW_CXXFLAGS}" |
367 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
368 | export FFLAGS="${NEW_FFLAGS}" |
|
|
369 | export FCFLAGS="${NEW_FCFLAGS}" |
| 328 | return 0 |
370 | return 0 |
| 329 | } |
371 | } |
| 330 | |
372 | |
| 331 | test-flag-PROG() { |
373 | test-flag-PROG() { |
| 332 | local comp=$1 |
374 | local comp=$1 |
| … | |
… | |
| 338 | local PROG=$(tc-get${comp}) |
380 | local PROG=$(tc-get${comp}) |
| 339 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
381 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
| 340 | > /dev/null 2>&1 |
382 | > /dev/null 2>&1 |
| 341 | } |
383 | } |
| 342 | |
384 | |
| 343 | # Returns true if C compiler support given flag |
385 | # @FUNCTION: test-flag-CC |
|
|
386 | # @USAGE: <flag> |
|
|
387 | # @DESCRIPTION: |
|
|
388 | # Returns shell true if <flag> is supported by the C compiler, else returns shell false. |
| 344 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
389 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
| 345 | |
390 | |
| 346 | # Returns true if C++ compiler support given flag |
391 | # @FUNCTION: test-flag-CXX |
|
|
392 | # @USAGE: <flag> |
|
|
393 | # @DESCRIPTION: |
|
|
394 | # Returns shell true if <flag> is supported by the C++ compiler, else returns shell false. |
| 347 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
395 | test-flag-CXX() { test-flag-PROG "CXX" "$1"; } |
|
|
396 | |
|
|
397 | # @FUNCTION: test-flag-F77 |
|
|
398 | # @USAGE: <flag> |
|
|
399 | # @DESCRIPTION: |
|
|
400 | # Returns shell true if <flag> is supported by the Fortran 77 compiler, else returns shell false. |
|
|
401 | test-flag-F77() { test-flag-PROG "F77" "$1"; } |
|
|
402 | |
|
|
403 | # @FUNCTION: test-flag-FC |
|
|
404 | # @USAGE: <flag> |
|
|
405 | # @DESCRIPTION: |
|
|
406 | # Returns shell true if <flag> is supported by the Fortran 90 compiler, else returns shell false. |
|
|
407 | test-flag-FC() { test-flag-PROG "FC" "$1"; } |
| 348 | |
408 | |
| 349 | test-flags-PROG() { |
409 | test-flags-PROG() { |
| 350 | local comp=$1 |
410 | local comp=$1 |
| 351 | local flags |
411 | local flags |
| 352 | local x |
412 | local x |
| … | |
… | |
| 364 | |
424 | |
| 365 | # Just bail if we dont have any flags |
425 | # Just bail if we dont have any flags |
| 366 | [[ -n ${flags} ]] |
426 | [[ -n ${flags} ]] |
| 367 | } |
427 | } |
| 368 | |
428 | |
| 369 | # Returns (echo's) the given flags supported by the C compiler |
429 | # @FUNCTION: test-flags-CC |
|
|
430 | # @USAGE: <flags> |
|
|
431 | # @DESCRIPTION: |
|
|
432 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
| 370 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
433 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
| 371 | |
434 | |
| 372 | # Returns (echo's) the given flags supported by the C++ compiler |
435 | # @FUNCTION: test-flags-CXX |
|
|
436 | # @USAGE: <flags> |
|
|
437 | # @DESCRIPTION: |
|
|
438 | # Returns shell true if <flags> are supported by the C++ compiler, else returns shell false. |
| 373 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
439 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
| 374 | |
440 | |
|
|
441 | # @FUNCTION: test-flags-F77 |
|
|
442 | # @USAGE: <flags> |
|
|
443 | # @DESCRIPTION: |
|
|
444 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
445 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
446 | |
|
|
447 | # @FUNCTION: test-flags-FC |
|
|
448 | # @USAGE: <flags> |
|
|
449 | # @DESCRIPTION: |
|
|
450 | # Returns shell true if <flags> are supported by the Fortran 90 compiler, else returns shell false. |
|
|
451 | test-flags-FC() { test-flags-PROG "FC" "$@"; } |
|
|
452 | |
|
|
453 | # @FUNCTION: test-flags |
|
|
454 | # @USAGE: <flags> |
|
|
455 | # @DESCRIPTION: |
| 375 | # Short-hand that should hopefully work for both C and C++ compiler, but |
456 | # Short-hand that should hopefully work for both C and C++ compiler, but |
| 376 | # its really only present due to the append-flags() abomination. |
457 | # its really only present due to the append-flags() abomination. |
| 377 | test-flags() { test-flags-CC "$@"; } |
458 | test-flags() { test-flags-CC "$@"; } |
| 378 | |
459 | |
| 379 | # Depriciated, use test-flags() |
460 | # @FUNCTION: test_flag |
|
|
461 | # @DESCRIPTION: |
|
|
462 | # DEPRICIATED, use test-flags() |
| 380 | test_flag() { |
463 | test_flag() { |
| 381 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
464 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
| 382 | |
465 | |
| 383 | test-flags-CC "$@" |
466 | test-flags-CC "$@" |
| 384 | } |
467 | } |
| 385 | |
468 | |
|
|
469 | # @FUNCTION: test_version_info |
|
|
470 | # @USAGE: <version> |
|
|
471 | # @DESCRIPTION: |
|
|
472 | # Returns shell true if the current C compiler version matches <version>, else returns shell false. |
|
|
473 | # Accepts shell globs. |
| 386 | test_version_info() { |
474 | test_version_info() { |
| 387 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
475 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
| 388 | return 0 |
476 | return 0 |
| 389 | else |
477 | else |
| 390 | return 1 |
478 | return 1 |
| 391 | fi |
479 | fi |
| 392 | } |
480 | } |
| 393 | |
481 | |
|
|
482 | # @FUNCTION: strip-unsupported-flags |
|
|
483 | # @DESCRIPTION: |
|
|
484 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
| 394 | strip-unsupported-flags() { |
485 | strip-unsupported-flags() { |
| 395 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
486 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
| 396 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
487 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
|
|
488 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
|
|
489 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
| 397 | } |
490 | } |
| 398 | |
491 | |
|
|
492 | # @FUNCTION: get-flag |
|
|
493 | # @USAGE: <flag> |
|
|
494 | # @DESCRIPTION: |
|
|
495 | # Find and echo the value for a particular flag. Accepts shell globs. |
| 399 | get-flag() { |
496 | get-flag() { |
| 400 | local f findflag="$1" |
497 | local f findflag="$1" |
| 401 | |
498 | |
| 402 | # this code looks a little flaky but seems to work for |
499 | # this code looks a little flaky but seems to work for |
| 403 | # everything we want ... |
500 | # everything we want ... |
| 404 | # for example, if CFLAGS="-march=i686": |
501 | # for example, if CFLAGS="-march=i686": |
| 405 | # `get-flag -march` == "-march=i686" |
502 | # `get-flag -march` == "-march=i686" |
| 406 | # `get-flag march` == "i686" |
503 | # `get-flag march` == "i686" |
| 407 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
504 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
| 408 | if [ "${f/${findflag}}" != "${f}" ] ; then |
505 | if [ "${f/${findflag}}" != "${f}" ] ; then |
| 409 | printf "%s\n" "${f/-${findflag}=}" |
506 | printf "%s\n" "${f/-${findflag}=}" |
| 410 | return 0 |
507 | return 0 |
| 411 | fi |
508 | fi |
| 412 | done |
509 | done |
| 413 | return 1 |
510 | return 1 |
| 414 | } |
511 | } |
| 415 | |
512 | |
|
|
513 | # @FUNCTION: has_hardened |
|
|
514 | # @DESCRIPTION: |
| 416 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
515 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
| 417 | has_hardened() { |
516 | has_hardened() { |
| 418 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
517 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
| 419 | |
518 | |
| 420 | test_version_info Hardened && return 0 |
519 | test_version_info Hardened && return 0 |
| 421 | # The specs file wont exist unless gcc has GCC_SPECS support |
520 | # The specs file wont exist unless gcc has GCC_SPECS support |
| 422 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
521 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
| 423 | } |
522 | } |
| 424 | |
523 | |
|
|
524 | # @FUNCTION: has_pic |
|
|
525 | # @DESCRIPTION: |
| 425 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
526 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 426 | # indicate whether PIC is set |
527 | # indicate whether PIC is set |
| 427 | has_pic() { |
528 | has_pic() { |
| 428 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
529 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
| 429 | |
530 | |
| 430 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
531 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
| 431 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
532 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
| 432 | gcc-specs-pie |
533 | gcc-specs-pie |
| 433 | } |
534 | } |
| 434 | |
535 | |
|
|
536 | # @FUNCTION: has_pie |
|
|
537 | # @DESCRIPTION: |
| 435 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
538 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
| 436 | # indicate whether PIE is set |
539 | # indicate whether PIE is set |
| 437 | has_pie() { |
540 | has_pie() { |
| 438 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
541 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
| 439 | |
542 | |
| 440 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
543 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
| 441 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
544 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
| 442 | gcc-specs-pie |
545 | gcc-specs-pie |
| 443 | } |
546 | } |
| 444 | |
547 | |
|
|
548 | # @FUNCTION: has_ssp_all |
|
|
549 | # @DESCRIPTION: |
| 445 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
550 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 446 | # indicate whether code for SSP is being generated for all functions |
551 | # indicate whether code for SSP is being generated for all functions |
| 447 | has_ssp_all() { |
552 | has_ssp_all() { |
| 448 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
553 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
| 449 | |
554 | |
| … | |
… | |
| 451 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
556 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
| 452 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
557 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
| 453 | gcc-specs-ssp-all |
558 | gcc-specs-ssp-all |
| 454 | } |
559 | } |
| 455 | |
560 | |
|
|
561 | # @FUNCTION: has_ssp |
|
|
562 | # @DESCRIPTION: |
| 456 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
563 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
| 457 | # indicate whether code for SSP is being generated |
564 | # indicate whether code for SSP is being generated |
| 458 | has_ssp() { |
565 | has_ssp() { |
| 459 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
566 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
| 460 | |
567 | |
| … | |
… | |
| 462 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
569 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
| 463 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
570 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
| 464 | gcc-specs-ssp |
571 | gcc-specs-ssp |
| 465 | } |
572 | } |
| 466 | |
573 | |
|
|
574 | # @FUNCTION: has_m64 |
|
|
575 | # @DESCRIPTION: |
|
|
576 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
577 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
|
|
578 | # return code is 0, else the return code is 1. |
| 467 | has_m64() { |
579 | has_m64() { |
| 468 | # this doesnt test if the flag is accepted, it tests if the flag |
580 | # this doesnt test if the flag is accepted, it tests if the flag |
| 469 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
581 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 470 | # please dont replace this function with test_flag in some future |
582 | # please dont replace this function with test_flag in some future |
| 471 | # clean-up! |
583 | # clean-up! |
| … | |
… | |
| 478 | rm -f "${temp}".c |
590 | rm -f "${temp}".c |
| 479 | [[ ${ret} != 1 ]] && return 0 |
591 | [[ ${ret} != 1 ]] && return 0 |
| 480 | return 1 |
592 | return 1 |
| 481 | } |
593 | } |
| 482 | |
594 | |
|
|
595 | # @FUNCTION: has_m32 |
|
|
596 | # @DESCRIPTION: |
|
|
597 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
598 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
599 | # code is 0, else return code is 1. |
| 483 | has_m32() { |
600 | has_m32() { |
| 484 | # this doesnt test if the flag is accepted, it tests if the flag |
601 | # this doesnt test if the flag is accepted, it tests if the flag |
| 485 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
602 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
| 486 | # please dont replace this function with test_flag in some future |
603 | # please dont replace this function with test_flag in some future |
| 487 | # clean-up! |
604 | # clean-up! |
| … | |
… | |
| 496 | rm -f "${temp}".c |
613 | rm -f "${temp}".c |
| 497 | [[ ${ret} != 1 ]] && return 0 |
614 | [[ ${ret} != 1 ]] && return 0 |
| 498 | return 1 |
615 | return 1 |
| 499 | } |
616 | } |
| 500 | |
617 | |
|
|
618 | # @FUNCTION: replace-sparc64-flags |
|
|
619 | # @DESCRIPTION: |
|
|
620 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
| 501 | replace-sparc64-flags() { |
621 | replace-sparc64-flags() { |
| 502 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
622 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
| 503 | |
623 | |
| 504 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
624 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
| 505 | for x in ${SPARC64_CPUS}; do |
625 | for x in ${SPARC64_CPUS}; do |
| … | |
… | |
| 522 | fi |
642 | fi |
| 523 | |
643 | |
| 524 | export CFLAGS CXXFLAGS |
644 | export CFLAGS CXXFLAGS |
| 525 | } |
645 | } |
| 526 | |
646 | |
|
|
647 | # @FUNCTION: append-ldflags |
|
|
648 | # @USAGE: <flags> |
|
|
649 | # @DESCRIPTION: |
|
|
650 | # Add extra <flags> to the current LDFLAGS. |
| 527 | append-ldflags() { |
651 | append-ldflags() { |
| 528 | [[ -z $* ]] && return 0 |
652 | [[ -z $* ]] && return 0 |
|
|
653 | local flag |
|
|
654 | for flag in "$@"; do |
|
|
655 | [[ ${flag} == -l* ]] && \ |
|
|
656 | ewarn "Appending a library link instruction (${flag}); libraries to link to should not be passed through LDFLAGS" |
|
|
657 | done |
|
|
658 | |
| 529 | export LDFLAGS="${LDFLAGS} $*" |
659 | export LDFLAGS="${LDFLAGS} $*" |
| 530 | return 0 |
660 | return 0 |
| 531 | } |
661 | } |
| 532 | |
662 | |
| 533 | # Remove flags from LDFLAGS - it's up to the ebuild to filter |
663 | # @FUNCTION: filter-ldflags |
| 534 | # CFLAGS and CXXFLAGS via filter-flags if they need to. |
664 | # @USAGE: <flags> |
|
|
665 | # @DESCRIPTION: |
|
|
666 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
| 535 | filter-ldflags() { |
667 | filter-ldflags() { |
| 536 | _filter-var LDFLAGS "$@" |
668 | _filter-var LDFLAGS "$@" |
| 537 | return 0 |
669 | return 0 |
| 538 | } |
670 | } |
| 539 | |
671 | |
|
|
672 | # @FUNCTION: raw-ldflags |
|
|
673 | # @USAGE: <flags> |
|
|
674 | # @DESCRIPTION: |
| 540 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
675 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
| 541 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
676 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
| 542 | # to gcc where it needs the '-Wl,'. |
677 | # to gcc where it needs the '-Wl,'. |
| 543 | raw-ldflags() { |
678 | raw-ldflags() { |
| 544 | local x input="$@" |
679 | local x input="$@" |
| … | |
… | |
| 549 | set -- "$@" ${x//,/ } |
684 | set -- "$@" ${x//,/ } |
| 550 | done |
685 | done |
| 551 | echo "$@" |
686 | echo "$@" |
| 552 | } |
687 | } |
| 553 | |
688 | |
|
|
689 | # @FUNCTION: bindnow-flags |
|
|
690 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
|
|
691 | # @DESCRIPTION: |
| 554 | # Gets the flags needed for "NOW" binding |
692 | # DEPRECATED - Gets the flags needed for "NOW" binding |
| 555 | bindnow-flags() { |
693 | bindnow-flags() { |
|
|
694 | ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2 |
|
|
695 | |
| 556 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
696 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
| 557 | *GNU* | *'with BFD'*) # GNU ld |
697 | *GNU* | *'with BFD'*) # GNU ld |
| 558 | echo "-Wl,-z,now" ;; |
698 | echo "-Wl,-z,now" ;; |
| 559 | *Apple*) # Darwin ld |
699 | *Apple*) # Darwin ld |
| 560 | echo "-bind_at_load" ;; |
700 | echo "-bind_at_load" ;; |
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