APP = dynload_plain
OBJS = dynload_plain.o
TEST_U8_SO = dynload_plain_ß_test # @@@ unsure if every platform handles ß, here (ANSI, UTF-8, ...)

TOP = ../..
CFLAGS  += -I${TOP}/dynload -DDEF_C_DYLIB=\"${DEF_C_DYLIB}\"
LDFLAGS += -L${TOP}/dynload
LDLIBS  += -ldynload_s
# Works on: Darwin, NetBSD.
# Linux: add '-ldl'

all: ${TEST_C_LD} ${TEST_U8_SO}
	# deduce path to default libc.so file, easier to do via shell than in code
	# (see main() in dynload_plain.c); get from what ${TEST_C_LD} is linked
	# against, then reinvoke make with actual build
	export X=`((ldd ${TEST_C_LD} | awk '/libc\.so/{for(i=1;i<=NF;++i){if($$i ~ "^/")print $$i}}' || ls /lib*/libc.so* || ls /usr/lib/libc.so*) | grep -v '\.a$$' | (sort -V -r || sort -t . -n -k 2)) 2>/dev/null | head -1`; \
	${MAKE} DEF_C_DYLIB="$$X" ${APP}

.PHONY: all clean

${TEST_C_LD}:
	# dummy bin built with same toolchain and flags to deduce default c lib this is linked with
	echo 'int main() { return 0; }' | ${CC} -x c ${CFLAGS} ${LDFLAGS} -o ${TEST_C_LD} -

${APP}: ${OBJS}
	${CC} ${CFLAGS} ${LDFLAGS} ${OBJS} ${LDLIBS} -o $@

${TEST_U8_SO}:
	echo 'int dynload_plain_testfunc() { return 5; }' | ${CC} ${CFLAGS} -`[ \`uname\` = Darwin ] && echo dynamiclib || echo shared` -x c - -o ${TEST_U8_SO}

clean:
	rm -f ${APP} ${OBJS} ${TEST_U8_SO}