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authorRich Felker <dalias@aerifal.cx>2012-01-24 00:22:27 -0500
committerRich Felker <dalias@aerifal.cx>2012-01-24 00:22:27 -0500
commitb768c7bc6398e297945b08dd5315cae472279a3a (patch)
treeade9cc39e97c600ff2f101ef02cef192bb4a8959
parentd0678b58ab34f9afae099afc839430bdcd91aaac (diff)
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make gcc wrapper support -shared correctly
it was previously attempting to link start files as part of shared objects. this is definitely wrong and depending on the platform and linker could range from just adding extraneous junk to introducing textrels to making linking fail entirely.
-rw-r--r--tools/gen-musl-gcc.sh9
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/gen-musl-gcc.sh b/tools/gen-musl-gcc.sh
index 1ef0550f..edc40846 100644
--- a/tools/gen-musl-gcc.sh
+++ b/tools/gen-musl-gcc.sh
@@ -29,6 +29,7 @@ for i ; do
case "$skip$i" in
-I|-L) skip=--- ; continue ;;
-[cSE]|-M*) nolink=1 ;;
+-shared) nocrt=1 ;;
-*) ;;
*) havefile=1 ;;
esac
@@ -37,13 +38,17 @@ done
[ "$havefile" ] || nolink=1
+[ "$nolink" ] && nocrt=1
+
+[ "$nocrt" ] || set -- "$libc_start" "$libc_crt" "$@" "$libc_end" \
+
[ "$nolink" ] || {
tmp_specs=$HOME/.specs.tmp.$$
printf '*link_libgcc:\n\n\n' > "$tmp_specs" || exit 1
exec 3<"$tmp_specs"
rm -f "$tmp_specs"
-set -- -specs=/proc/self/fd/3 "$libc_start" "$libc_crt" "$@" "$libc_end" \
- -Wl,--start-group -lc -lgcc -lgcc_eh -Wl,--end-group \
+set -- -specs=/proc/self/fd/3 "$@" \
+ -Wl,--as-needed -Wl,--start-group -lc -lgcc -lgcc_eh -Wl,--end-group \
-Wl,-dynamic-linker,"$ldso_pathname" -Wl,-nostdlib
}