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configure: make buildsystem-set CPPFLAGS non-overridable

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we temporarily store all buildsystem-set conditionals into
OUR_CPPFLAGS and write it into config.mak as an addition to eventually
user-supplied CPPFLAGS. this should prevent crucial things we set from
being overwritten by a user that has CPPFLAGS exported.

fixes #142
This commit is contained in:
rofl0r 2016-10-16 11:28:05 +00:00
parent 0f6b226b15
commit c883cd4940
1 changed files with 8 additions and 6 deletions
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14
configure vendored
View File

@ -1,6 +1,7 @@
#!/bin/sh
prefix=/usr/local
OUR_CPPFLAGS=
# Get a temporary filename
i=0
@ -33,10 +34,10 @@ check_compile() {
printf "checking %s ... " "$1"
printf "$3" > "$tmpc"
local res=0
$CC $CPPFLAGS $2 $CFLAGS -c "$tmpc" -o /dev/null >/dev/null 2>&1 \
$CC $OUR_CPPFLAGS $CPPFLAGS $2 $CFLAGS -c "$tmpc" -o /dev/null >/dev/null 2>&1 \
|| res=1
test x$res = x0 && \
{ printf "yes\n" ; test x"$2" = x || CPPFLAGS="$CPPFLAGS $2" ; } \
{ printf "yes\n" ; test x"$2" = x || OUR_CPPFLAGS="$OUR_CPPFLAGS $2" ; } \
|| printf "no\n"
return $res
}
@ -44,7 +45,7 @@ check_compile() {
check_define() {
printf "checking whether \$CC defines %s ... " "$1"
local res=1
$CC $CPPFLAGS $CFLAGS -dM -E - </dev/null | grep "$1" >/dev/null && res=0
$CC $OUR_CPPFLAGS $CPPFLAGS $CFLAGS -dM -E - </dev/null | grep "$1" >/dev/null && res=0
test x$res = x0 && printf "yes\n" || printf "no\n"
return $res
}
@ -53,7 +54,7 @@ check_compile_run() {
printf "checking %s ... " "$1"
printf "$2" > "$tmpc"
local res=0
$CC $CPPFLAGS $CFLAGS "$tmpc" -o "$tmpc".out >/dev/null 2>&1 \
$CC $OUR_CPPFLAGS $CPPFLAGS $CFLAGS "$tmpc" -o "$tmpc".out >/dev/null 2>&1 \
|| res=1
test x$res = x0 && { "$tmpc".out || res=1 ; }
rm -f "$tmpc".out
@ -143,7 +144,7 @@ check_compile 'whether netinet/in.h defines __u6_addr.__u6_addr16' \
check_define __OpenBSD__ && \
check_compile_run 'whether OpenBSDs fclose() (illegally) calls close()' \
'#include <stdio.h>\n#include<stdlib.h>\nint close(int x){exit(0);}int main(){fclose(stdin);return 1;}' && \
CPPFLAGS="$CPPFLAGS -DBROKEN_FCLOSE"
OUR_CPPFLAGS="$OUR_CPPFLAGS -DBROKEN_FCLOSE"
echo CC?=$CC>config.mak
[ -z "$CPPFLAGS" ] || echo CPPFLAGS?=$CPPFLAGS>>config.mak
@ -155,7 +156,8 @@ echo bindir=$bindir>>config.mak
echo libdir=$libdir>>config.mak
echo includedir=$includedir>>config.mak
echo sysconfdir=$sysconfdir>>config.mak
[ "$ignore_cve" = "no" ] && echo CPPFLAGS+= -DSUPER_SECURE>>config.mak
[ "$ignore_cve" = "no" ] && echo "CPPFLAGS+= -DSUPER_SECURE">>config.mak
[ -z "$OUR_CPPFLAGS" ] || echo "CPPFLAGS+= $OUR_CPPFLAGS" >>config.mak
make_cmd=make
if ismac ; then
echo NO_AS_NEEDED=>>config.mak