/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.37 Revision 1.48
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2003 Gentoo Technologies, Inc.
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 1.37 2004/02/21 07:19:29 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.48 2004/05/06 02:36:37 vapier Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
6 6
7ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
47# will leave the user with -mfpmath=386 47# will leave the user with -mfpmath=386
48# 48#
49#### append-ldflags #### 49#### append-ldflags ####
50# Add extra flags to your current LDFLAGS 50# Add extra flags to your current LDFLAGS
51# 51#
52#### filter-ldflags <flags> ####
53# Remove particular flags from LDFLAGS
54# Matches only complete flags
55#
52#### etexec-flags #### 56#### etexec-flags ####
53# hooked function for hardened-gcc that appends 57# hooked function for hardened-gcc that appends
54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 58# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie 59# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
56# 60#
60# and a package is filtering -fstack-protector, -fstack-protector-all 64# and a package is filtering -fstack-protector, -fstack-protector-all
61# 65#
62 66
63# C[XX]FLAGS that we allow in strip-flags 67# C[XX]FLAGS that we allow in strip-flags
64setup-allowed-flags() { 68setup-allowed-flags() {
69 if [ -z "${ALLOWED_FLAGS}" ] ; then
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 70 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
66 case "${ARCH}" in 71 case "${ARCH}" in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 72 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 73 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 74 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 75 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
71 esac 76 esac
77 fi
72 78
73 # C[XX]FLAGS that we are think is ok, but needs testing 79 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 80 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 81 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 82 return 0
77} 83}
78 84
79filter-flags() { 85filter-flags() {
80 for x in "$@" ; do 86 for x in "$@" ; do
81 case "${x}" in 87 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie) etexec-flags;; 88 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 89 -fstack-protector|-fstack-protector-all) fstack-flags;;
84 *) ;; 90 *) ;;
85 esac 91 esac
86 done 92 done
87 93
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 100 CXXFLAGS="${CXXFLAGS// ${x} / }"
95 done 101 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 102 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 103 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
98 return 0 104 return 0
105}
106
107filter-lfs-flags() {
108 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
109}
110
111append-lfs-flags() {
112 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
99} 113}
100 114
101append-flags() { 115append-flags() {
102 export CFLAGS="${CFLAGS} $@" 116 export CFLAGS="${CFLAGS} $@"
103 export CXXFLAGS="${CXXFLAGS} $@" 117 export CXXFLAGS="${CXXFLAGS} $@"
121 local newcpu="$1" ; shift 135 local newcpu="$1" ; shift
122 local oldcpu="" 136 local oldcpu=""
123 for oldcpu in "$@" ; do 137 for oldcpu in "$@" ; do
124 replace-flags -march=${oldcpu} -march=${newcpu} 138 replace-flags -march=${oldcpu} -march=${newcpu}
125 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 139 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu}
140 replace-flags -mtune=${oldcpu} -mtune=${newcpu}
126 done 141 done
127 return 0 142 return 0
128} 143}
129 144
130is-flag() { 145is-flag() {
219 export CXXFLAGS="${NEW_CXXFLAGS}" 234 export CXXFLAGS="${NEW_CXXFLAGS}"
220 return 0 235 return 0
221} 236}
222 237
223test_flag() { 238test_flag() {
224 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 239 if [ -z "`gcc -S -xc "$@" -o /dev/null /dev/null 2>&1`" ]; then
225 echo "$@" 240 echo "$@"
226 return 0 241 return 0
227 fi 242 fi
228 return 1 243 return 1
229} 244}
254 fi 269 fi
255 done 270 done
256 return 1 271 return 1
257} 272}
258 273
274has_pic() {
275 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
276 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
277 has_version sys-devel/hardened-gcc && return 0
278 [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0
279 return 1
280}
281
282has_pie() {
283 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
284 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
285 has_version sys-devel/hardened-gcc && return 0
286 [ ! -z "`${CC/ .*/} --version| grep pie`" ] && return 0
287 return 1
288}
289
290has_ssp() {
291 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
292 has_version sys-devel/hardened-gcc && return 0
293 [ ! -z "`${CC/ .*/} --version| grep ssp`" ] && return 0
294 return 1
295}
296
259replace-sparc64-flags() { 297replace-sparc64-flags() {
260 local SPARC64_CPUS="ultrasparc v9" 298 local SPARC64_CPUS="ultrasparc v9"
261 299
262 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 300 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
263 then 301 then
289append-ldflags() { 327append-ldflags() {
290 LDFLAGS="${LDFLAGS} $@" 328 LDFLAGS="${LDFLAGS} $@"
291 return 0 329 return 0
292} 330}
293 331
332filter-ldflags() {
333 # we do this fancy spacing stuff so as to not filter
334 # out part of a flag ... we want flag atoms ! :D
335 LDFLAGS=" ${LDFLAGS} "
336 for x in "$@" ; do
337 LDFLAGS="${LDFLAGS// ${x} / }"
338 done
339 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
340 return 0
341}
342
294etexec-flags() { 343etexec-flags() {
295 has_version sys-devel/hardened-gcc 344 has_pie || has_pic
296 if [ $? == 0 ] ; then 345 if [ $? == 0 ] ; then
297 if [ "`is-flag -yet_exec`" != "true" ]; then 346 [ -z "`is-flag -yet_exec`" ] &&
298 debug-print ">>> appending flags -yet_exec" 347 export CFLAGS="${CFLAGS} `test_flag -yet_exec`"
299 append-flags -yet_exec 348 [ -z "`is-flag -nopie`" ] &&
300 append-ldflags -yet_exec 349 export CFLAGS="${CFLAGS} `test_flag -nopie`"
301 fi
302 fi 350 fi
303} 351}
304 352
305fstack-flags() { 353fstack-flags() {
306 has_version sys-devel/hardened-gcc 354 has_ssp
307 if [ $? == 0 ] ; then 355 if [ $? == 0 ] ; then
308 if [ "`is-flag -yno_propolice`" != "true" ]; then 356 [ -z "`is-flag -yno_propolice`" ] &&
309 debug-print ">>> appending flags -yno_propolice" 357 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
310 append-flags -yno_propolice
311 append-ldflags -yno_propolice
312 fi 358 fi
313 fi
314} 359}

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