zig-cc and rpath

README.txt

$ make
cc -shared -o x/libversioned.so.2 x/imported.c
zig cc dylib_client.c '-Wl,-rpath,$ORIGIN/x' -L x -l :libversioned.so.2 -o dylib_client.zig-cc
gcc dylib_client.c '-Wl,-rpath,$ORIGIN/x' -L x -l :libversioned.so.2 -o dylib_client.gcc
zig cc:
 0x0000000000000001 (NEEDED)             Shared library: [libversioned.so.2]
 0x000000000000001d (RUNPATH)            Library runpath: [$ORIGIN/x]
gcc:
 0x000000000000001d (RUNPATH)            Library runpath: [$ORIGIN/x:x]
 0x0000000000000001 (NEEDED)             Shared library: [x/libversioned.so.2]

bar.c

int bar() { return 0; }

dylib_client.c

extern int foo();
extern int bar();

int main() {
	return foo();
	return bar();
}

foo.c

int foo() { return 0; }

Makefile

ZIG ?= zig

.PHONY: test
test: t-rpath.zig-cc t-rpath.clang-16 t-plain.clang-16 t-plain.zig-cc x/libfoo.so.2
	@echo clang-16 rpath:
	@readelf -d t-rpath.clang-16 | grep -E "runpath|foo|bar" | sort
	@echo zig cc rpath:
	@readelf -d t-rpath.zig-cc | grep -E "runpath|foo|bar" | sort
	@echo clang-16 plain:
	@readelf -d t-plain.clang-16 | grep -E "runpath|foo|bar" | sort
	@echo zig cc plain:
	@readelf -d t-plain.zig-cc | grep -E "runpath|foo|bar" | sort

RPATHFLAGS='-Wl,-rpath,$$ORIGIN/x' -L x -l :libfoo.so.2 x/libbar.so.2
PLAINFLAGS=-L x -l :libfoo.so.2

SHLIBS = x/libfoo.so.2 x/libbar.so.2

t-rpath.zig-cc: dylib_client.c $(SHLIBS)
	$(ZIG) cc $< $(RPATHFLAGS) -o $@

t-rpath.clang-16: dylib_client.c $(SHLIBS)
	clang-16 $< $(RPATHFLAGS) -o $@

t-plain.zig-cc: dylib_client.c $(SHLIBS)
	$(ZIG) cc $< $(PLAINFLAGS) -o $@

t-plain.clang-16: dylib_client.c $(SHLIBS)
	clang-16 $< $(PLAINFLAGS) -o $@

x/lib%.so.2: %.c
	mkdir -p x
	$(CC) -shared -o $@ $<

clean:
	rm -f x/libfoo.so.2 x/libbar.so.2 t-*cc t-*clang-16