APP        = dynload_plain
OBJS       = dynload_plain.o
TEST_C_LD  = dynload_plain_c_ld   # helper to deduce default c lib apps are linked with
TEST_U8_SO = dynload_plain_ß_test # @@@ unsure if every platform handles ß, here (ANSI, UTF-8, ...)
SRCTOP     = ${VPATH}/../..
BLDTOP     = ../..
CFLAGS    += -I${SRCTOP}/dynload -DDEF_C_DYLIB=\"${DEF_C_DYLIB}\"
LDLIBS_D  += -L${BLDTOP}/dynload -ldynload_s

.PHONY: all clean install
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;++r}}}END{exit !r}' || 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}
${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_D} ${LDLIBS} -o ${APP}
${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_C_LD} ${TEST_U8_SO}
install:
	mkdir -p ${PREFIX}/test
	cp ${APP} ${TEST_U8_SO} ${PREFIX}/test