2.11.08 added invalid linker flag for macOS: `ld: unknown option: -z`

[barracuda156]

[100%] Linking C executable luametatex
/opt/local/bin/cmake -E cmake_link_script CMakeFiles/luametatex.dir/link.txt --verbose=ON
ld: unknown option: -z
collect2: error: ld returned 1 exit status
/opt/local/bin/gcc-mp-14 -pipe -Os -DNDEBUG -arch ppc -mmacosx-version-min=10.6 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names -Wl,-z,stack-size=2621440 CMakeFiles/luametatex.dir/source/luametatex.c.o -o luametatex  -Wl,-rpath,/opt/local/lib libtex.a liblua.a libmp.a libluarest.a libluasocket.a libluaoptional.a libpplib.a libminiz.a libsoftposit.a libpotrace.a libqrcodegen.a libtriangles.a libnanojpeg.a -lm
make[2]: *** [luametatex] Error 1

[tacohoekwater]

Works for me, but I am using Apple’s clang compiler, not gcc.

On 5 Mar 2026, at 12:02, Sergey Fedorov ***@***.***> wrote: barracuda156 created an issue (contextgarden/luametatex#16) [100%] Linking C executable luametatex /opt/local/bin/cmake -E cmake_link_script CMakeFiles/luametatex.dir/link.txt --verbose=ON ld: unknown option: -z collect2: error: ld returned 1 exit status /opt/local/bin/gcc-mp-14 -pipe -Os -DNDEBUG -arch ppc -mmacosx-version-min=10.6 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names -Wl,-z,stack-size=2621440 CMakeFiles/luametatex.dir/source/luametatex.c.o -o luametatex -Wl,-rpath,/opt/local/lib libtex.a liblua.a libmp.a libluarest.a libluasocket.a libluaoptional.a libpplib.a libminiz.a libsoftposit.a libpotrace.a libqrcodegen.a libtriangles.a libnanojpeg.a -lm make[2]: *** [luametatex] Error 1 — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

— Taco Hoekwater E: ***@***.*** genderfluid (all pronouns)

[barracuda156]

@tacohoekwater The flag is not used with clang:

luametatex/CMakeLists.txt

Lines 150 to 178 in b51333f

	if (CMAKE_C_COMPILER_ID MATCHES "Clang")
	# why not -03
	add_compile_options(
	-O2
	)
	add_definitions(-DLMT_COMPILER_USED="clang")
	else()
	add_compile_options(
	-O3
	# -g0
	# -mtune=nocona # fails on arm so more testing needed
	)
	add_definitions(-DLMT_COMPILER_USED="gcc")
	# add_compile_options(-pg)
	# add_link_options(-pg)
	# e.g. mp crashes when we have > 4K currentpicture clips in a row
	# set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,stack-size=1000000")
	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,stack-size=2621440")
	endif()