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author | Rodger Combs <rodger.combs@gmail.com> | 2016-09-10 02:12:34 +0300 |
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committer | Rodger Combs <rodger.combs@gmail.com> | 2016-10-04 09:11:04 +0300 |
commit | 63fbeebf6ecb40b21db84d42f9f18867b3f89dca (patch) | |
tree | 47a12a887dd53bbdb7ff1751513234726fe062c8 /configure | |
parent | be1d32492e58cbba6d69d3ce67545536b15e051d (diff) |
configure: add linker export script support on Darwin
This isn't a "version script" in the usual sense, since it doesn't set symbol
versions directly. Instead, the version for the whole .dylib is set in the
linker flags, and we generate a list of symbol patterns to export. This allows
us to keep our local symbols (e.g. ff_*) local on the platform.
The Darwin linker's exported_symbols_list format is a bit different than the
one used by the GNU linker. It doesn't handle local symbols at all, since when
a list is provided, all unlisted symbols are local by default; thus, we remove
local sections. It doesn't handle per-version sections, so we remove the
headers and brackets. It expects symbols to be prefixed with an underscore.
It errors if a listed symbol with no wildcards is not present in the output,
so we append an asterisk to any symbol that doesn't already end in one.
Diffstat (limited to 'configure')
-rwxr-xr-x | configure | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -4705,6 +4705,8 @@ case $target_os in { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; } check_header dispatch/dispatch.h && add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore' + version_script='-exported_symbols_list' + VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"' ;; msys*) die "Native MSYS builds are discouraged, please use the MINGW environment." |