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configure: detect OSX >= 12 and use new dyld hooking method

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closes #409
This commit is contained in:
rofl0r 2021-12-14 14:38:55 +00:00
parent 4a013fe6a5
commit e20c08fe47
1 changed files with 28 additions and 5 deletions
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31
configure vendored
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@ -28,10 +28,20 @@ check_compile() {
return $res return $res
} }
get_define() {
$CC $OUR_CPPFLAGS $CPPFLAGS $CFLAGS -dM -E - </dev/null | grep "$1"
}
get_define_stripped() {
local output=$(get_define "$1")
test "$?" = 0 || return 1
printf "%s\n" "$output" | sed 's/^.* .* //'
}
check_define() { check_define() {
printf "checking whether \$CC defines %s ... " "$1" printf "checking whether \$CC defines %s ... " "$1"
local res=1 local res=1
$CC $OUR_CPPFLAGS $CPPFLAGS $CFLAGS -dM -E - </dev/null | grep "$1" >/dev/null && res=0 get_define "$1" >/dev/null && res=0
test x$res = x0 && printf "yes\n" || printf "no\n" test x$res = x0 && printf "yes\n" || printf "no\n"
return $res return $res
} }
@ -74,8 +84,10 @@ usage() {
echo "--sysconfdir=/path default: $prefix/etc" echo "--sysconfdir=/path default: $prefix/etc"
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 (possibly insecure, but handy)"
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 "--hookmethod=dlsym|dyld hook method for osx. default: auto"
echo " if OSX >= 12 is detected, dyld method will be used if auto."
echo "--help : show this text" echo "--help : show this text"
exit 1 exit 1
} }
@ -89,6 +101,8 @@ spliteq() {
fat_binary= fat_binary=
ignore_cve=no ignore_cve=no
hookmethod=auto
parsearg() { parsearg() {
case "$1" in case "$1" in
--prefix=*) prefix=`spliteq $1`;; --prefix=*) prefix=`spliteq $1`;;
@ -99,6 +113,7 @@ parsearg() {
--sysconfdir=*) sysconfdir=`spliteq $1`;; --sysconfdir=*) sysconfdir=`spliteq $1`;;
--ignore-cve) ignore_cve=1;; --ignore-cve) ignore_cve=1;;
--ignore-cve=*) ignore_cve=`spliteq $1`;; --ignore-cve=*) ignore_cve=`spliteq $1`;;
--hookmethod=*) hookmethod=`spliteq $1`;;
--fat-binary) fat_binary=1;; --fat-binary) fat_binary=1;;
--help) usage;; --help) usage;;
esac esac
@ -175,6 +190,10 @@ check_compile 'whether we have clock_gettime' "-DHAVE_CLOCK_GETTIME" \
check_define __APPLE__ && { check_define __APPLE__ && {
mac_detected=true mac_detected=true
check_define __x86_64__ && mac_64=true check_define __x86_64__ && mac_64=true
if test "$hookmethod" = auto ; then
osver=$(get_define_stripped __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 2>/dev/null)
test "$osver" -gt $((120000 - 1)) && hookmethod=dyld
fi
} }
check_define __FreeBSD__ && bsd_detected=true check_define __FreeBSD__ && bsd_detected=true
check_define __OpenBSD__ && { check_define __OpenBSD__ && {
@ -228,10 +247,14 @@ make_cmd=make
if ismac ; then if ismac ; then
echo LDSO_SUFFIX=dylib>>config.mak echo LDSO_SUFFIX=dylib>>config.mak
echo MAC_CFLAGS+=-DIS_MAC=1>>config.mak echo MAC_CFLAGS+=-DIS_MAC=1>>config.mak
if test "$hookmethod" = dyld ; then
echo "using Monterey style DYLD hooking"
echo "CFLAGS+=-DMONTEREY_HOOKING">>config.mak
fi
if ismac64 && [ "$fat_binary" = 1 ] ; then if ismac64 && [ "$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
fi fi
elif isbsd ; then elif isbsd ; then
echo LIBDL=>>config.mak echo LIBDL=>>config.mak