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configure: remove bogus uname platform checks

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calling uname in a configure script is entirely bogus, as it will return
wrong results in crosscompilation scenarios. the only sensible way to
detect the target platform's peculiarities is to test the preprocessor
for macros defining the target.
This commit is contained in:
rofl0r 2018-01-09 13:50:08 +00:00
parent 2f3d33dd47
commit b299193d13
1 changed files with 26 additions and 20 deletions
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46
configure vendored
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@ -14,22 +14,6 @@ done
set +C set +C
trap 'rm "$tmpc"' EXIT INT QUIT TERM HUP trap 'rm "$tmpc"' EXIT INT QUIT TERM HUP
ismac() {
uname -s | grep Darwin >/dev/null
}
isx86_64() {
uname -m | grep -i X86_64 >/dev/null
}
isbsd() {
uname -s | grep BSD >/dev/null
}
isopenbsd() {
uname -s | grep OpenBSD >/dev/null
}
check_compile() { check_compile() {
printf "checking %s ... " "$1" printf "checking %s ... " "$1"
printf "$3" > "$tmpc" printf "$3" > "$tmpc"
@ -73,7 +57,7 @@ usage() {
echo "--ignore-cve default: no" echo "--ignore-cve default: no"
echo " if set to yes ignores CVE-2015-3887 and makes it possible" echo " if set to yes ignores CVE-2015-3887 and makes it possible"
echo " to preload from current dir (insecure)" echo " to preload from current dir (insecure)"
ismac && isx86_64 && echo "--fat-binary : build for both i386 and x86_64 architectures on 64-bit Macs" echo "--fat-binary : build for both i386 and x86_64 architectures on 64-bit Macs"
echo "--help : show this text" echo "--help : show this text"
exit 1 exit 1
} }
@ -133,10 +117,33 @@ if [ -z "$CC" ] ; then
CC=cc CC=cc
fi fi
check_define __OpenBSD__ && \
bsd_detected=false
isbsd() {
$bsd_detected
}
mac_detected=false
ismac() {
$mac_detected
}
mac_64=false
ismac64() {
$mac_64
}
check_define __APPLE__ && {
mac_detected=true
check_define __x86_64__ && mac_64=true
}
check_define __FreeBSD__ && bsd_detected=true
check_define __OpenBSD__ && {
bsd_detected=true
echo "CFLAGS+=-DIS_OPENBSD">>config.mak
check_compile_run 'whether OpenBSDs fclose() (illegally) calls close()' \ check_compile_run 'whether OpenBSDs fclose() (illegally) calls close()' \
'#include <stdio.h>\n#include<stdlib.h>\nint close(int x){exit(0);}int main(){fclose(stdin);return 1;}' && \ '#include <stdio.h>\n#include<stdlib.h>\nint close(int x){exit(0);}int main(){fclose(stdin);return 1;}' && \
OUR_CPPFLAGS="$OUR_CPPFLAGS -DBROKEN_FCLOSE" OUR_CPPFLAGS="$OUR_CPPFLAGS -DBROKEN_FCLOSE"
}
echo "CC=$CC">config.mak echo "CC=$CC">config.mak
[ -z "$CPPFLAGS" ] || echo "CPPFLAGS=$CPPFLAGS">>config.mak [ -z "$CPPFLAGS" ] || echo "CPPFLAGS=$CPPFLAGS">>config.mak
@ -155,7 +162,7 @@ if ismac ; then
echo NO_AS_NEEDED=>>config.mak echo NO_AS_NEEDED=>>config.mak
echo LDSO_SUFFIX=dylib>>config.mak echo LDSO_SUFFIX=dylib>>config.mak
echo MAC_CFLAGS+=-DIS_MAC=1>>config.mak echo MAC_CFLAGS+=-DIS_MAC=1>>config.mak
if isx86_64 && [ "$fat_binary" = 1 ] ; then if ismac64 && [ "$fat_binary" = 1 ] ; then
echo "Configuring a fat binary for i386 and x86_64" echo "Configuring a fat binary for i386 and x86_64"
echo MAC_CFLAGS+=-arch i386 -arch x86_64>>config.mak echo MAC_CFLAGS+=-arch i386 -arch x86_64>>config.mak
echo LDFLAGS+=-arch i386 -arch x86_64>>config.mak echo LDFLAGS+=-arch i386 -arch x86_64>>config.mak
@ -164,7 +171,6 @@ if ismac ; then
elif isbsd ; then elif isbsd ; then
echo LIBDL=>>config.mak echo LIBDL=>>config.mak
echo "CFLAGS+=-DIS_BSD">>config.mak echo "CFLAGS+=-DIS_BSD">>config.mak
isopenbsd && echo "CFLAGS+=-DIS_OPENBSD">>config.mak
make_cmd=gmake make_cmd=gmake
fi fi