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# This creates exe <- liba.so <- libb.so There are two libraries:
# {first,second}/libb.so and exe has an rpath to first, whereas liba.so has an
# rpath to second
LD_LIBRARY_PATH=
.PHONY: clean
all: check
first/libb.so:
@mkdir -p $(@D)
echo 'int g(){return 1;}' | $(CC) -shared -Wl,-soname,$(@F) -o $@ -x c -
second/libb.so:
@mkdir -p $(@D)
echo 'int g(){return 2;}' | $(CC) -shared -Wl,-soname,$(@F) -o $@ -x c -
liba.so: second/libb.so
echo 'extern int g(); int f(){return g();}' | $(CC) -shared -Wl,--disable-new-dtags -Wl,-soname,$@ -o $@ '-Wl,-rpath,$$ORIGIN/second' -x c - -Lsecond -lb
exe: first/libb.so liba.so
echo 'extern int f(); int main(){return f();}' | $(CC) -o $@ -Wl,--disable-new-dtags '-Wl,-rpath,$$ORIGIN,-rpath,$$ORIGIN/first' -x c - -L. -la
check: exe liba.so
../../libtree -p liba.so # should find second/libb.so, not first/libb.so
../../libtree -p exe # should find second/libb.so, not first/libb.so
clean:
rm -rf -- *.so exe* first second
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