1 | # Copyright 1999-2004 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 1.79 2004/12/25 18:45:56 chriswhite Exp $ |
3 | # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.125 2008/09/14 19:43:41 dirtyepic Exp $ |
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4 | |
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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 | |
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13 | inherit eutils toolchain-funcs multilib |
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14 | |
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15 | ################ DEPRECATED functions ################ |
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16 | # The following are still present to avoid breaking existing |
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17 | # code more than necessary; however they are deprecated. Please |
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18 | # use gcc-specs-* from toolchain-funcs.eclass instead, if you |
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19 | # need to know which hardened techs are active in the compiler. |
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20 | # See bug #100974 |
4 | # |
21 | # |
5 | # Author Bart Verwilst <verwilst@gentoo.org> |
22 | # has_hardened |
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23 | # has_pie |
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24 | # has_pic |
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25 | # has_ssp_all |
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26 | # has_ssp |
6 | |
27 | |
7 | ECLASS=flag-o-matic |
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8 | INHERITED="$INHERITED $ECLASS" |
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9 | |
28 | |
10 | IUSE="debug" |
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11 | |
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12 | # need access to emktemp() |
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13 | inherit eutils toolchain-funcs |
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14 | |
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15 | # |
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16 | #### filter-flags <flags> #### |
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17 | # Remove particular flags from C[XX]FLAGS |
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18 | # Matches only complete flags |
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19 | # |
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20 | #### append-flags <flags> #### |
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21 | # Add extra flags to your current C[XX]FLAGS |
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22 | # |
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23 | #### replace-flags <orig.flag> <new.flag> ### |
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24 | # Replace a flag by another one |
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25 | # |
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26 | #### replace-cpu-flags <old.cpus> <new.cpu> ### |
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27 | # Replace march/mcpu flags that specify <old.cpus> |
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28 | # with flags that specify <new.cpu> |
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29 | # |
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30 | #### is-flag <flag> #### |
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31 | # Returns "true" if flag is set in C[XX]FLAGS |
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32 | # Matches only complete a flag |
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33 | # |
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34 | #### strip-flags #### |
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35 | # Strip C[XX]FLAGS of everything except known |
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36 | # good options. |
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37 | # |
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38 | #### strip-unsupported-flags #### |
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39 | # Strip C[XX]FLAGS of any flags not supported by |
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40 | # installed version of gcc |
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41 | # |
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42 | #### get-flag <flag> #### |
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43 | # Find and echo the value for a particular flag |
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44 | # |
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45 | #### replace-sparc64-flags #### |
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46 | # Sets mcpu to v8 and uses the original value |
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47 | # as mtune if none specified. |
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48 | # |
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49 | #### filter-mfpmath <math types> #### |
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50 | # Remove specified math types from the fpmath specification |
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51 | # If the user has -mfpmath=sse,386, running `filter-mfpmath sse` |
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52 | # will leave the user with -mfpmath=386 |
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53 | # |
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54 | #### append-ldflags #### |
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55 | # Add extra flags to your current LDFLAGS |
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56 | # |
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57 | #### filter-ldflags <flags> #### |
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58 | # Remove particular flags from LDFLAGS |
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59 | # Matches only complete flags |
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60 | # |
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61 | #### etexec-flags #### |
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62 | # hooked function for hardened gcc that appends |
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63 | # -fno-pic to {C,CXX,LD}FLAGS |
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64 | # when a package is filtering -fpic, -fPIC, -fpie, -fPIE |
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65 | # |
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66 | #### fstack-flags #### |
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67 | # hooked function for hardened gcc that appends |
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68 | # -fno-stack-protector to {C,CXX,LD}FLAGS |
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69 | # when a package is filtering -fstack-protector, -fstack-protector-all |
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70 | # notice: modern automatic specs files will also suppress -fstack-protector-all |
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71 | # when only -fno-stack-protector is given |
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72 | # |
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73 | |
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74 | # 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 |
75 | setup-allowed-flags() { |
31 | setup-allowed-flags() { |
76 | if [ -z "${ALLOWED_FLAGS}" ] ; then |
32 | if [[ -z ${ALLOWED_FLAGS} ]] ; then |
77 | export ALLOWED_FLAGS="-pipe" |
33 | export ALLOWED_FLAGS="-pipe" |
78 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
34 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" |
79 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" |
35 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all" |
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36 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking" |
80 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" |
37 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time" |
81 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" |
38 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+" |
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39 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident" |
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40 | export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w" |
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41 | fi |
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42 | # allow a bunch of flags that negate features / control ABI |
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43 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \ |
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44 | -fno-strict-aliasing -fno-bounds-checking" |
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45 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ |
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46 | -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ |
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47 | -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ |
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48 | -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ |
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49 | -mieee -mieee-with-inexact -mschedule \ |
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50 | -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ |
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51 | -mflat -mno-flat -mno-faster-structs -mfaster-structs \ |
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52 | -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ |
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53 | -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \ |
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54 | -msecure-plt -D*" |
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55 | |
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56 | # {C,CXX,F,FC}FLAGS that we are think is ok, but needs testing |
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57 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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58 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks" |
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59 | return 0 |
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60 | } |
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61 | |
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62 | # inverted filters for hardened compiler. This is trying to unpick |
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63 | # the hardened compiler defaults. |
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64 | _filter-hardened() { |
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65 | local f |
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66 | for f in "$@" ; do |
82 | case "${ARCH}" in |
67 | case "${f}" in |
83 | mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;; |
68 | # Ideally we should only concern ourselves with PIE flags, |
84 | amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; |
69 | # not -fPIC or -fpic, but too many places filter -fPIC without |
85 | x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; |
70 | # thinking about -fPIE. |
86 | alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
71 | -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie) |
87 | ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; |
72 | gcc-specs-pie || continue |
88 | sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;; |
73 | is-flagq -nopie || append-flags -nopie;; |
89 | ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;; |
74 | -fstack-protector) |
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75 | gcc-specs-ssp || continue |
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76 | is-flagq -fno-stack-protector || append-flags -fno-stack-protector;; |
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77 | -fstack-protector-all) |
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78 | gcc-specs-ssp-to-all || continue |
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79 | is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;; |
90 | esac |
80 | esac |
91 | fi |
81 | done |
92 | # allow a bunch of flags that negate features / control ABI |
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93 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" |
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94 | case "${ARCH}" in |
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95 | x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; |
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96 | esac |
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97 | ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias" |
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98 | |
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99 | # C[XX]FLAGS that we are think is ok, but needs testing |
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100 | # NOTE: currently -Os have issues with gcc3 and K6* arch's |
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101 | export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" |
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102 | return 0 |
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103 | } |
82 | } |
104 | |
83 | |
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84 | # Remove occurrences of strings from variable given in $1 |
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85 | # Strings removed are matched as globs, so for example |
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86 | # '-O*' would remove -O1, -O2 etc. |
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87 | _filter-var() { |
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88 | local f x VAR VAL |
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89 | declare -a new |
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90 | |
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91 | VAR=$1 |
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92 | shift |
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93 | eval VAL=\${${VAR}} |
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94 | for f in ${VAL}; do |
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95 | for x in "$@"; do |
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96 | # Note this should work with globs like -O* |
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97 | [[ ${f} == ${x} ]] && continue 2 |
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98 | done |
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99 | eval new\[\${\#new\[@]}]=\${f} |
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100 | done |
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101 | eval export ${VAR}=\${new\[*]} |
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102 | } |
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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. |
105 | filter-flags() { |
108 | filter-flags() { |
106 | local x f fset |
109 | _filter-hardened "$@" |
107 | declare -a new_CFLAGS new_CXXFLAGS |
110 | _filter-var CFLAGS "$@" |
108 | |
111 | _filter-var CPPFLAGS "$@" |
109 | for x in "$@" ; do |
112 | _filter-var CXXFLAGS "$@" |
110 | case "${x}" in |
113 | _filter-var FFLAGS "$@" |
111 | -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; |
114 | _filter-var FCFLAGS "$@" |
112 | -fstack-protector|-fstack-protector-all) fstack-flags;; |
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113 | esac |
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114 | done |
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115 | |
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116 | for fset in CFLAGS CXXFLAGS; do |
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117 | # Looping over the flags instead of using a global |
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118 | # substitution ensures that we're working with flag atoms. |
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119 | # Otherwise globs like -O* have the potential to wipe out the |
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120 | # list of flags. |
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121 | for f in ${!fset}; do |
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122 | for x in "$@"; do |
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123 | # Note this should work with globs like -O* |
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124 | [[ ${f} == ${x} ]] && continue 2 |
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125 | done |
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126 | eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f} |
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127 | done |
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128 | eval export ${fset}=\${new_${fset}\[*]} |
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129 | done |
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130 | |
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131 | return 0 |
115 | return 0 |
132 | } |
116 | } |
133 | |
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. |
134 | filter-lfs-flags() { |
121 | filter-lfs-flags() { |
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122 | [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" |
135 | 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 |
136 | } |
124 | } |
137 | |
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. |
138 | append-lfs-flags() { |
150 | append-lfs-flags() { |
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151 | [[ -n $@ ]] && die "append-lfs-flags takes no arguments" |
139 | 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 |
140 | } |
153 | } |
141 | |
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. |
142 | append-flags() { |
159 | append-flags() { |
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160 | [[ -z $* ]] && return 0 |
143 | export CFLAGS="${CFLAGS} $*" |
161 | export CFLAGS="${CFLAGS} $*" |
144 | export CXXFLAGS="${CXXFLAGS} $*" |
162 | export CXXFLAGS="${CXXFLAGS} $*" |
145 | [ -n "`is-flag -fno-stack-protector`" -o \ |
163 | export FFLAGS="${FFLAGS} $*" |
146 | -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags |
164 | export FCFLAGS="${FCFLAGS} $*" |
147 | return 0 |
165 | return 0 |
148 | } |
166 | } |
149 | |
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>. |
150 | 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 $#" |
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176 | |
151 | local f fset |
177 | local f fset |
152 | declare -a new_CFLAGS new_CXXFLAGS |
178 | declare -a new_CFLAGS new_CXXFLAGS new_FFLAGS new_FCFLAGS |
153 | |
179 | |
154 | for fset in CFLAGS CXXFLAGS; do |
180 | for fset in CFLAGS CXXFLAGS FFLAGS FCFLAGS; do |
155 | # Looping over the flags instead of using a global |
181 | # Looping over the flags instead of using a global |
156 | # substitution ensures that we're working with flag atoms. |
182 | # substitution ensures that we're working with flag atoms. |
157 | # Otherwise globs like -O* have the potential to wipe out the |
183 | # Otherwise globs like -O* have the potential to wipe out the |
158 | # list of flags. |
184 | # list of flags. |
159 | for f in ${!fset}; do |
185 | for f in ${!fset}; do |
… | |
… | |
165 | done |
191 | done |
166 | |
192 | |
167 | return 0 |
193 | return 0 |
168 | } |
194 | } |
169 | |
195 | |
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196 | # @FUNCTION: replace-cpu-flags |
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197 | # @USAGE: <old> <new> |
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198 | # @DESCRIPTION: |
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199 | # Replace cpu flags (like -march/-mcpu/-mtune) that select the <old> cpu |
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200 | # with flags that select the <new> cpu. Accepts shell globs for <old>. |
170 | replace-cpu-flags() { |
201 | replace-cpu-flags() { |
171 | local newcpu="$#" ; newcpu="${!newcpu}" |
202 | local newcpu="$#" ; newcpu="${!newcpu}" |
172 | while [ $# -gt 1 ] ; do |
203 | while [ $# -gt 1 ] ; do |
173 | # quote to make sure that no globbing is done (particularly on |
204 | # quote to make sure that no globbing is done (particularly on |
174 | # ${oldcpu} prior to calling replace-flags |
205 | # ${oldcpu}) prior to calling replace-flags |
175 | replace-flags "-march=${1}" "-march=${newcpu}" |
206 | replace-flags "-march=${1}" "-march=${newcpu}" |
176 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
207 | replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" |
177 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
208 | replace-flags "-mtune=${1}" "-mtune=${newcpu}" |
178 | shift |
209 | shift |
179 | done |
210 | done |
180 | return 0 |
211 | return 0 |
181 | } |
212 | } |
182 | |
213 | |
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214 | _is_flagq() { |
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215 | local x |
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216 | for x in ${!1} ; do |
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217 | [[ ${x} == $2 ]] && return 0 |
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218 | done |
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219 | return 1 |
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220 | } |
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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. |
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226 | is-flagq() { |
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227 | [[ -n $2 ]] && die "Usage: is-flag <flag>" |
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228 | _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1 || _is_flagq FFLAGS $1 || _is_flagq FCFLAGS $1 |
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229 | } |
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230 | |
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231 | # @FUNCTION: is-flag |
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232 | # @USAGE: <flag> |
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233 | # @DESCRIPTION: |
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234 | # Echo's "true" if flag is set in {C,CXX,F,FC}FLAGS. Accepts shell globs. |
183 | is-flag() { |
235 | is-flag() { |
184 | local x |
236 | is-flagq "$@" && echo true |
185 | |
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186 | for x in ${CFLAGS} ${CXXFLAGS} ; do |
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187 | # Note this should work with globs like -mcpu=ultrasparc* |
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188 | if [[ ${x} == ${1} ]]; then |
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189 | echo true |
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190 | return 0 |
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191 | fi |
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192 | done |
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193 | return 1 |
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194 | } |
237 | } |
195 | |
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. |
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243 | is-ldflagq() { |
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244 | [[ -n $2 ]] && die "Usage: is-ldflag <flag>" |
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245 | _is_flagq LDFLAGS $1 |
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246 | } |
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247 | |
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248 | # @FUNCTION: is-ldflag |
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249 | # @USAGE: <flag> |
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250 | # @DESCRIPTION: |
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251 | # Echo's "true" if flag is set in LDFLAGS. Accepts shell globs. |
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252 | is-ldflag() { |
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253 | is-ldflagq "$@" && echo true |
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254 | } |
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255 | |
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256 | # @FUNCTION: filter-mfpmath |
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257 | # @USAGE: <math types> |
|
|
258 | # @DESCRIPTION: |
|
|
259 | # Remove specified math types from the fpmath flag. For example, if the user |
|
|
260 | # has -mfpmath=sse,386, running `filter-mfpmath sse` will leave the user with |
|
|
261 | # -mfpmath=386. |
196 | filter-mfpmath() { |
262 | filter-mfpmath() { |
197 | local orig_mfpmath new_math prune_math |
263 | local orig_mfpmath new_math prune_math |
198 | |
264 | |
199 | # save the original -mfpmath flag |
265 | # save the original -mfpmath flag |
200 | orig_mfpmath="`get-flag -mfpmath`" |
266 | orig_mfpmath=$(get-flag -mfpmath) |
201 | # get the value of the current -mfpmath flag |
267 | # get the value of the current -mfpmath flag |
202 | new_math=" `get-flag mfpmath | tr , ' '` " |
268 | new_math=$(get-flag mfpmath) |
|
|
269 | new_math=" ${new_math//,/ } " |
203 | # figure out which math values are to be removed |
270 | # figure out which math values are to be removed |
204 | prune_math="" |
271 | prune_math="" |
205 | for prune_math in "$@" ; do |
272 | for prune_math in "$@" ; do |
206 | new_math="${new_math/ ${prune_math} / }" |
273 | new_math=${new_math/ ${prune_math} / } |
207 | done |
274 | done |
208 | new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" |
275 | new_math=$(echo ${new_math}) |
|
|
276 | new_math=${new_math// /,} |
209 | |
277 | |
210 | if [ -z "${new_math}" ] ; then |
278 | if [[ -z ${new_math} ]] ; then |
211 | # if we're removing all user specified math values are |
279 | # if we're removing all user specified math values are |
212 | # slated for removal, then we just filter the flag |
280 | # slated for removal, then we just filter the flag |
213 | filter-flags ${orig_mfpmath} |
281 | filter-flags ${orig_mfpmath} |
214 | else |
282 | else |
215 | # if we only want to filter some of the user specified |
283 | # if we only want to filter some of the user specified |
… | |
… | |
217 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
285 | replace-flags ${orig_mfpmath} -mfpmath=${new_math} |
218 | fi |
286 | fi |
219 | return 0 |
287 | return 0 |
220 | } |
288 | } |
221 | |
289 | |
|
|
290 | # @FUNCTION: strip-flags |
|
|
291 | # @DESCRIPTION: |
|
|
292 | # Strip C[XX]FLAGS of everything except known good/safe flags. |
222 | strip-flags() { |
293 | strip-flags() { |
223 | local x y flag NEW_CFLAGS NEW_CXXFLAGS |
294 | local x y flag NEW_CFLAGS NEW_CXXFLAGS NEW_FFLAGS NEW_FCFLAGS |
224 | |
295 | |
225 | setup-allowed-flags |
296 | setup-allowed-flags |
226 | |
297 | |
227 | local NEW_CFLAGS="" |
298 | local NEW_CFLAGS="" |
228 | local NEW_CXXFLAGS="" |
299 | local NEW_CXXFLAGS="" |
|
|
300 | local NEW_FFLAGS="" |
|
|
301 | local NEW_FCFLAGS="" |
229 | |
302 | |
230 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
303 | # Allow unstable C[XX]FLAGS if we are using unstable profile ... |
231 | if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then |
304 | if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then |
232 | use debug && einfo "Enabling the use of some unstable flags" |
|
|
233 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
305 | ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" |
234 | fi |
306 | fi |
235 | |
307 | |
236 | set -f # disable pathname expansion |
308 | set -f # disable pathname expansion |
237 | |
309 | |
… | |
… | |
253 | break |
325 | break |
254 | fi |
326 | fi |
255 | done |
327 | done |
256 | done |
328 | done |
257 | |
329 | |
|
|
330 | for x in ${FFLAGS}; do |
|
|
331 | for y in ${ALLOWED_FLAGS}; do |
|
|
332 | flag=${x%%=*} |
|
|
333 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
334 | NEW_FFLAGS="${NEW_FFLAGS} ${x}" |
|
|
335 | break |
|
|
336 | fi |
|
|
337 | done |
|
|
338 | done |
|
|
339 | |
|
|
340 | for x in ${FCFLAGS}; do |
|
|
341 | for y in ${ALLOWED_FLAGS}; do |
|
|
342 | flag=${x%%=*} |
|
|
343 | if [ "${flag%%${y}}" = "" ] ; then |
|
|
344 | NEW_FCFLAGS="${NEW_FCFLAGS} ${x}" |
|
|
345 | break |
|
|
346 | fi |
|
|
347 | done |
|
|
348 | done |
|
|
349 | |
258 | # In case we filtered out all optimization flags fallback to -O2 |
350 | # In case we filtered out all optimization flags fallback to -O2 |
259 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
351 | if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then |
260 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
352 | NEW_CFLAGS="${NEW_CFLAGS} -O2" |
261 | fi |
353 | fi |
262 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
354 | if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then |
263 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
355 | NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" |
264 | fi |
356 | fi |
|
|
357 | if [ "${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="${NEW_FCFLAGS} -O2" |
|
|
362 | fi |
265 | |
363 | |
266 | set +f # re-enable pathname expansion |
364 | set +f # re-enable pathname expansion |
267 | |
365 | |
268 | export CFLAGS="${NEW_CFLAGS}" |
366 | export CFLAGS="${NEW_CFLAGS}" |
269 | export CXXFLAGS="${NEW_CXXFLAGS}" |
367 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
368 | export FFLAGS="${NEW_FFLAGS}" |
|
|
369 | export FCFLAGS="${NEW_FCFLAGS}" |
|
|
370 | return 0 |
|
|
371 | } |
|
|
372 | |
|
|
373 | test-flag-PROG() { |
|
|
374 | local comp=$1 |
|
|
375 | local flags="$2" |
|
|
376 | |
|
|
377 | [[ -z ${comp} || -z ${flags} ]] && \ |
270 | return 0 |
378 | return 1 |
271 | } |
|
|
272 | |
379 | |
|
|
380 | local PROG=$(tc-get${comp}) |
|
|
381 | ${PROG} ${flags} -S -o /dev/null -xc /dev/null \ |
|
|
382 | > /dev/null 2>&1 |
|
|
383 | } |
|
|
384 | |
|
|
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. |
|
|
389 | test-flag-CC() { test-flag-PROG "CC" "$1"; } |
|
|
390 | |
|
|
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. |
|
|
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"; } |
|
|
408 | |
|
|
409 | test-flags-PROG() { |
|
|
410 | local comp=$1 |
|
|
411 | local flags |
|
|
412 | local x |
|
|
413 | |
|
|
414 | shift |
|
|
415 | |
|
|
416 | [[ -z ${comp} ]] && return 1 |
|
|
417 | |
|
|
418 | x="" |
|
|
419 | for x in "$@" ; do |
|
|
420 | test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}" |
|
|
421 | done |
|
|
422 | |
|
|
423 | echo "${flags}" |
|
|
424 | |
|
|
425 | # Just bail if we dont have any flags |
|
|
426 | [[ -n ${flags} ]] |
|
|
427 | } |
|
|
428 | |
|
|
429 | # @FUNCTION: test-flags-CC |
|
|
430 | # @USAGE: <flags> |
|
|
431 | # @DESCRIPTION: |
|
|
432 | # Returns shell true if <flags> are supported by the C compiler, else returns shell false. |
|
|
433 | test-flags-CC() { test-flags-PROG "CC" "$@"; } |
|
|
434 | |
|
|
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. |
|
|
439 | test-flags-CXX() { test-flags-PROG "CXX" "$@"; } |
|
|
440 | |
|
|
441 | # @FUNCTION: test-flags-F77 |
|
|
442 | # @USAGE: <flags> |
|
|
443 | # @DESCRIPTION: |
|
|
444 | # Returns shell true if <flags> are supported by the Fortran 77 compiler, else returns shell false. |
|
|
445 | test-flags-F77() { test-flags-PROG "F77" "$@"; } |
|
|
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" "$@"; } |
|
|
452 | |
|
|
453 | # @FUNCTION: test-flags |
|
|
454 | # @USAGE: <flags> |
|
|
455 | # @DESCRIPTION: |
|
|
456 | # Short-hand that should hopefully work for both C and C++ compiler, but |
|
|
457 | # its really only present due to the append-flags() abomination. |
|
|
458 | test-flags() { test-flags-CC "$@"; } |
|
|
459 | |
|
|
460 | # @FUNCTION: test_flag |
|
|
461 | # @DESCRIPTION: |
|
|
462 | # DEPRICIATED, use test-flags() |
273 | test_flag() { |
463 | test_flag() { |
274 | if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then |
464 | ewarn "test_flag: deprecated, please use test-flags()!" >&2 |
275 | printf "%s\n" "$*" |
|
|
276 | return 0 |
|
|
277 | fi |
|
|
278 | return 1 |
|
|
279 | } |
|
|
280 | |
465 | |
|
|
466 | test-flags-CC "$@" |
|
|
467 | } |
|
|
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. |
281 | test_version_info() { |
474 | test_version_info() { |
282 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
475 | if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then |
283 | return 0 |
476 | return 0 |
284 | else |
477 | else |
285 | return 1 |
478 | return 1 |
286 | fi |
479 | fi |
287 | } |
480 | } |
288 | |
481 | |
|
|
482 | # @FUNCTION: strip-unsupported-flags |
|
|
483 | # @DESCRIPTION: |
|
|
484 | # Strip {C,CXX,F,FC}FLAGS of any flags not supported by the active toolchain. |
289 | strip-unsupported-flags() { |
485 | strip-unsupported-flags() { |
290 | local NEW_CFLAGS NEW_CXXFLAGS |
486 | export CFLAGS=$(test-flags-CC ${CFLAGS}) |
291 | |
487 | export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS}) |
292 | for x in ${CFLAGS} ; do |
488 | export FFLAGS=$(test-flags-F77 ${FFLAGS}) |
293 | NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" |
489 | export FCFLAGS=$(test-flags-FC ${FCFLAGS}) |
294 | done |
|
|
295 | for x in ${CXXFLAGS} ; do |
|
|
296 | NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" |
|
|
297 | done |
|
|
298 | |
|
|
299 | export CFLAGS="${NEW_CFLAGS}" |
|
|
300 | export CXXFLAGS="${NEW_CXXFLAGS}" |
|
|
301 | } |
490 | } |
302 | |
491 | |
|
|
492 | # @FUNCTION: get-flag |
|
|
493 | # @USAGE: <flag> |
|
|
494 | # @DESCRIPTION: |
|
|
495 | # Find and echo the value for a particular flag. Accepts shell globs. |
303 | get-flag() { |
496 | get-flag() { |
304 | local f findflag="$1" |
497 | local f findflag="$1" |
305 | |
498 | |
306 | # this code looks a little flaky but seems to work for |
499 | # this code looks a little flaky but seems to work for |
307 | # everything we want ... |
500 | # everything we want ... |
308 | # for example, if CFLAGS="-march=i686": |
501 | # for example, if CFLAGS="-march=i686": |
309 | # `get-flag -march` == "-march=i686" |
502 | # `get-flag -march` == "-march=i686" |
310 | # `get-flag march` == "i686" |
503 | # `get-flag march` == "i686" |
311 | for f in ${CFLAGS} ${CXXFLAGS} ; do |
504 | for f in ${CFLAGS} ${CXXFLAGS} ${FFLAGS} ${FCFLAGS} ; do |
312 | if [ "${f/${findflag}}" != "${f}" ] ; then |
505 | if [ "${f/${findflag}}" != "${f}" ] ; then |
313 | printf "%s\n" "${f/-${findflag}=}" |
506 | printf "%s\n" "${f/-${findflag}=}" |
314 | return 0 |
507 | return 0 |
315 | fi |
508 | fi |
316 | done |
509 | done |
317 | return 1 |
510 | return 1 |
318 | } |
511 | } |
319 | |
512 | |
|
|
513 | # @FUNCTION: has_hardened |
|
|
514 | # @DESCRIPTION: |
|
|
515 | # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs |
320 | has_hardened() { |
516 | has_hardened() { |
|
|
517 | ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2 |
|
|
518 | |
321 | test_version_info Hardened && return 0 |
519 | test_version_info Hardened && return 0 |
322 | # the specs file wont exist unless gcc has GCC_SPECS support |
520 | # The specs file wont exist unless gcc has GCC_SPECS support |
323 | [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ |
521 | [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]] |
324 | return 0 |
|
|
325 | return 1 |
|
|
326 | } |
522 | } |
327 | |
523 | |
|
|
524 | # @FUNCTION: has_pic |
|
|
525 | # @DESCRIPTION: |
|
|
526 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
527 | # indicate whether PIC is set |
328 | has_pic() { |
528 | has_pic() { |
329 | [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 |
529 | ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 |
330 | [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 |
|
|
331 | test_version_info pie && return 0 |
|
|
332 | return 1 |
|
|
333 | } |
|
|
334 | |
530 | |
|
|
531 | [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ |
|
|
532 | ${CFLAGS/-fpic} != ${CFLAGS} ]] || \ |
|
|
533 | gcc-specs-pie |
|
|
534 | } |
|
|
535 | |
|
|
536 | # @FUNCTION: has_pie |
|
|
537 | # @DESCRIPTION: |
|
|
538 | # DEPRECATED - use gcc-specs-pie from toolchain-funcs |
|
|
539 | # indicate whether PIE is set |
335 | has_pie() { |
540 | has_pie() { |
336 | [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 |
541 | ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 |
337 | [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 |
542 | |
338 | test_version_info pie && return 0 |
543 | [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ |
339 | return 1 |
544 | ${CFLAGS/-fpie} != ${CFLAGS} ]] || \ |
|
|
545 | gcc-specs-pie |
340 | } |
546 | } |
341 | |
547 | |
|
|
548 | # @FUNCTION: has_ssp_all |
|
|
549 | # @DESCRIPTION: |
|
|
550 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
551 | # indicate whether code for SSP is being generated for all functions |
|
|
552 | has_ssp_all() { |
|
|
553 | ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
554 | |
|
|
555 | # note; this matches only -fstack-protector-all |
|
|
556 | [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ |
|
|
557 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ |
|
|
558 | gcc-specs-ssp-all |
|
|
559 | } |
|
|
560 | |
|
|
561 | # @FUNCTION: has_ssp |
|
|
562 | # @DESCRIPTION: |
|
|
563 | # DEPRECATED - use gcc-specs-ssp from toolchain-funcs |
|
|
564 | # indicate whether code for SSP is being generated |
342 | has_ssp() { |
565 | has_ssp() { |
|
|
566 | ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2 |
|
|
567 | |
|
|
568 | # note; this matches both -fstack-protector and -fstack-protector-all |
343 | [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 |
569 | [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \ |
344 | test_version_info ssp && return 0 |
570 | -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \ |
345 | return 1 |
571 | gcc-specs-ssp |
346 | } |
572 | } |
347 | |
573 | |
|
|
574 | # @FUNCTION: has_m64 |
|
|
575 | # @DESCRIPTION: |
|
|
576 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
577 | # WORKS. Non-multilib gcc will take both -m32 and -m64. If the flag works |
|
|
578 | # return code is 0, else the return code is 1. |
348 | has_m64() { |
579 | has_m64() { |
349 | # this doesnt test if the flag is accepted, it tests if the flag |
580 | # this doesnt test if the flag is accepted, it tests if the flag |
350 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
581 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
351 | # please dont replace this function with test_flag in some future |
582 | # please dont replace this function with test_flag in some future |
352 | # clean-up! |
583 | # clean-up! |
|
|
584 | |
353 | local temp="$(emktemp)" |
585 | local temp="$(emktemp)" |
354 | echo "int main() { return(0); }" > ${temp}.c |
586 | echo "int main() { return(0); }" > "${temp}".c |
355 | MY_CC=$(tc-getCC) |
587 | MY_CC=$(tc-getCC) |
356 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
588 | ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
357 | local ret=$? |
589 | local ret=$? |
358 | rm -f ${temp}.c |
590 | rm -f "${temp}".c |
359 | [ "$ret" != "1" ] && return 0 |
591 | [[ ${ret} != 1 ]] && return 0 |
360 | return 1 |
592 | return 1 |
361 | } |
593 | } |
362 | |
594 | |
|
|
595 | # @FUNCTION: has_m32 |
|
|
596 | # @DESCRIPTION: |
|
|
597 | # This doesn't test if the flag is accepted, it tests if the flag actually |
|
|
598 | # WORKS. Non-mulilib gcc will take both -m32 and -64. If the flag works return |
|
|
599 | # code is 0, else return code is 1. |
363 | has_m32() { |
600 | has_m32() { |
364 | # this doesnt test if the flag is accepted, it tests if the flag |
601 | # this doesnt test if the flag is accepted, it tests if the flag |
365 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
602 | # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! |
366 | # please dont replace this function with test_flag in some future |
603 | # please dont replace this function with test_flag in some future |
367 | # clean-up! |
604 | # clean-up! |
|
|
605 | |
|
|
606 | [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 |
|
|
607 | |
368 | local temp="$(emktemp)" |
608 | local temp=$(emktemp) |
369 | echo "int main() { return(0); }" > ${temp}.c |
609 | echo "int main() { return(0); }" > "${temp}".c |
370 | MY_CC=$(tc-getCC) |
610 | MY_CC=$(tc-getCC) |
371 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 |
611 | ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1 |
372 | local ret=$? |
612 | local ret=$? |
373 | rm -f ${temp}.c |
613 | rm -f "${temp}".c |
374 | [ "$ret" != "1" ] && return 0 |
614 | [[ ${ret} != 1 ]] && return 0 |
375 | return 1 |
615 | return 1 |
376 | } |
616 | } |
377 | |
617 | |
|
|
618 | # @FUNCTION: replace-sparc64-flags |
|
|
619 | # @DESCRIPTION: |
|
|
620 | # Sets mcpu to v8 and uses the original value as mtune if none specified. |
378 | replace-sparc64-flags() { |
621 | replace-sparc64-flags() { |
379 | local SPARC64_CPUS="ultrasparc v9" |
622 | local SPARC64_CPUS="ultrasparc3 ultrasparc v9" |
380 | |
623 | |
381 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
624 | if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then |
382 | for x in ${SPARC64_CPUS}; do |
625 | for x in ${SPARC64_CPUS}; do |
383 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
626 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" |
384 | done |
627 | done |
385 | else |
628 | else |
386 | for x in ${SPARC64_CPUS}; do |
629 | for x in ${SPARC64_CPUS}; do |
387 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
630 | CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
388 | done |
631 | done |
389 | fi |
632 | fi |
390 | |
633 | |
391 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
634 | if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then |
392 | for x in ${SPARC64_CPUS}; do |
635 | for x in ${SPARC64_CPUS}; do |
393 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
636 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" |
394 | done |
637 | done |
395 | else |
638 | else |
396 | for x in ${SPARC64_CPUS}; do |
639 | for x in ${SPARC64_CPUS}; do |
397 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
640 | CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" |
398 | done |
641 | done |
399 | fi |
642 | fi |
400 | |
643 | |
401 | export CFLAGS CXXFLAGS |
644 | export CFLAGS CXXFLAGS |
402 | } |
645 | } |
403 | |
646 | |
|
|
647 | # @FUNCTION: append-ldflags |
|
|
648 | # @USAGE: <flags> |
|
|
649 | # @DESCRIPTION: |
|
|
650 | # Add extra <flags> to the current LDFLAGS. |
404 | append-ldflags() { |
651 | append-ldflags() { |
|
|
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 | |
405 | export LDFLAGS="${LDFLAGS} $*" |
659 | export LDFLAGS="${LDFLAGS} $*" |
406 | return 0 |
660 | return 0 |
407 | } |
661 | } |
408 | |
662 | |
|
|
663 | # @FUNCTION: filter-ldflags |
|
|
664 | # @USAGE: <flags> |
|
|
665 | # @DESCRIPTION: |
|
|
666 | # Remove particular <flags> from LDFLAGS. Accepts shell globs. |
409 | filter-ldflags() { |
667 | filter-ldflags() { |
410 | local x |
668 | _filter-var LDFLAGS "$@" |
|
|
669 | return 0 |
|
|
670 | } |
411 | |
671 | |
412 | # we do this fancy spacing stuff so as to not filter |
672 | # @FUNCTION: raw-ldflags |
413 | # out part of a flag ... we want flag atoms ! :D |
673 | # @USAGE: <flags> |
414 | LDFLAGS=" ${LDFLAGS} " |
674 | # @DESCRIPTION: |
|
|
675 | # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results |
|
|
676 | # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed |
|
|
677 | # to gcc where it needs the '-Wl,'. |
|
|
678 | raw-ldflags() { |
|
|
679 | local x input="$@" |
|
|
680 | [[ -z ${input} ]] && input=${LDFLAGS} |
|
|
681 | set -- |
415 | for x in "$@" ; do |
682 | for x in ${input} ; do |
416 | LDFLAGS="${LDFLAGS// ${x} / }" |
683 | x=${x#-Wl,} |
|
|
684 | set -- "$@" ${x//,/ } |
417 | done |
685 | done |
418 | LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" |
686 | echo "$@" |
419 | export LDFLAGS |
|
|
420 | return 0 |
|
|
421 | } |
687 | } |
422 | |
688 | |
423 | etexec-flags() { |
689 | # @FUNCTION: bindnow-flags |
424 | # if you're not using a hardened compiler you wont need this |
690 | # @RETURN: Returns the flags to enable "now" binding in the current selected linker. |
425 | # PIC/no-pic kludge in the first place. |
691 | # @DESCRIPTION: |
426 | has_hardened || return 0 |
692 | # DEPRECATED - Gets the flags needed for "NOW" binding |
427 | use amd64 && return 0 |
693 | bindnow-flags() { |
428 | use mips && return 0 |
694 | ewarn "QA: stop using the bindnow-flags function ... simply drop it from your ebuild" >&2 |
429 | |
695 | |
430 | if has_pie || has_pic; then |
696 | case $($(tc-getLD) -v 2>&1 </dev/null) in |
431 | [ -z "`is-flag -fno-pic`" ] && |
697 | *GNU* | *'with BFD'*) # GNU ld |
432 | export CFLAGS="${CFLAGS} `test_flag -fno-pic`" |
698 | echo "-Wl,-z,now" ;; |
433 | [ -z "`is-flag -nopie`" ] && |
699 | *Apple*) # Darwin ld |
434 | export CFLAGS="${CFLAGS} `test_flag -nopie`" |
700 | echo "-bind_at_load" ;; |
435 | fi |
701 | *) |
436 | return 0 |
702 | # Some linkers just recognize -V instead of -v |
|
|
703 | case $($(tc-getLD) -V 2>&1 </dev/null) in |
|
|
704 | *Solaris*) # Solaris accept almost the same GNU options |
|
|
705 | echo "-Wl,-z,now" ;; |
|
|
706 | esac |
|
|
707 | ;; |
|
|
708 | esac |
437 | } |
709 | } |
438 | |
710 | |
439 | fstack-flags() { |
|
|
440 | if has_ssp; then |
|
|
441 | [ -z "`is-flag -fno-stack-protector`" ] && |
|
|
442 | export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" |
|
|
443 | fi |
|
|
444 | return 0 |
|
|
445 | } |
|
|
446 | |
711 | |
447 | # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>, |
712 | # Some tests for when we screw with things and want to make |
448 | # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more |
713 | # sure we didn't break anything |
449 | # fixes. |
714 | #TESTS() { |
|
|
715 | # CFLAGS="-a -b -c=1" |
|
|
716 | # CXXFLAGS="-x -y -z=2" |
|
|
717 | # LDFLAGS="-l -m -n=3" |
450 | # |
718 | # |
451 | # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 |
719 | # die() { exit 1; } |
452 | gcc2-flags() { |
720 | # (is-flag 1 2 3) && die |
453 | CFLAGS=${CFLAGS//pentium-mmx/i586} |
721 | # (is-ldflag 1 2 3) && die |
454 | CFLAGS=${CFLAGS//pentium[234]/i686} |
722 | # |
455 | CFLAGS=${CFLAGS//k6-[23]/k6} |
723 | # is-flagq -l && die |
456 | CFLAGS=${CFLAGS//athlon-tbird/i686} |
724 | # is-ldflagq -a && die |
457 | CFLAGS=${CFLAGS//athlon-4/i686} |
725 | # is-flagq -a || die |
458 | CFLAGS=${CFLAGS//athlon-[xm]p/i686} |
726 | # is-flagq -x || die |
459 | CFLAGS=${CFLAGS//athlon/i686} |
727 | # is-ldflagq -n=* || die |
460 | |
728 | # is-ldflagq -n && die |
461 | CXXFLAGS=${CXXFLAGS//pentium-mmx/i586} |
729 | # |
462 | CXXFLAGS=${CXXFLAGS//pentium[234]/i686} |
730 | # strip-unsupported-flags |
463 | CXXFLAGS=${CXXFLAGS//k6-[23]/k6} |
731 | # [[ ${CFLAGS} == "-c=1" ]] || die |
464 | CXXFLAGS=${CXXFLAGS//athlon-tbird/i686} |
732 | # [[ ${CXXFLAGS} == "-y -z=2" ]] || die |
465 | CXXFLAGS=${CXXFLAGS//athlon-4/i686} |
733 | # |
466 | CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686} |
734 | # echo "All tests pass" |
467 | CXXFLAGS=${CXXFLAGS//athlon/i686} |
735 | #} |
468 | |
736 | #TESTS |
469 | if [ "$ARCH" = alpha ]; then |
|
|
470 | CHOST=${CHOST/#alphaev6[78]/alphaev6} |
|
|
471 | CFLAGS=${CFLAGS//ev6[78]/ev6} |
|
|
472 | CXXFLAGS=${CXXFLAGS//ev6[78]/ev6} |
|
|
473 | fi |
|
|
474 | |
|
|
475 | export CFLAGS CXXFLAGS |
|
|
476 | } |
|
|