musl soname cache discrepancy

Makefile

all: exe

# This library depends libx.so soname and calls f() from it
b/liby.so: c/libx.so
    @mkdir -p $(dir $@)
    echo 'int g() { h(); }' | $(CC) -o $@ -include dlfcn.h -shared -Wl,--no-as-needed -x c - -Lc -lx

# This library has both file and soname libx.so
c/libx.so:
    @mkdir -p $(dir $@)
    echo 'int h(){return 12;}' | $(CC) -o $@ -shared -Wl,-soname,libx.so,--no-as-needed -x c -

# This links to b/liby.so and c/libx.so, and gets libx.so and liby.so in DT_NEEDED, no paths.
exe: b/liby.so c/libx.so
    echo 'extern int g(); extern int h(); int main(){ printf("\%d\\n", g() + h()); }' | $(CC) -o $@ -include stdio.h -x c - -Lb -Lc -ly -l:libx.so '-Wl,--no-as-needed,--enable-new-dtags,-rpath,$$ORIGIN/b'
    patchelf --replace-needed libx.so $(shell pwd)/c/libx.so exe

clean:
    rm -rf -- a b c exe