work with BSD makefiles as well

asn1c/tests/check-assembly.sh

@@ -49,8 +49,13 @@ ln -fns "../${source_full}" "${testdir}"
 
 asn_module=$(echo "${abs_top_srcdir}/tests/${testno}"-*.asn1)
 
-# Create a Makefile for the project.
-cat > "$testdir/Makefile" <<EOM
+# Create a BSD or GNU Makefile for the project.
+produce_makefile() {
+    local make_type=$1
+    local make_file="$testdir/${make_type}makefile"
+
+# 1/3 part of the Makefile.
+cat > "${make_file}" <<PREAMBLE
 # This file is autogenerated by ../$0
 
 COMMON_FLAGS= -I. -I${abs_top_srcdir}/skeletons
@@ -61,7 +66,20 @@ LDFLAGS = ${LDFLAGS:-}
 
 CC ?= ${CC}
 
-OBJS=\$(patsubst %.c,%.o,\$(wildcard *.c))
+PREAMBLE
+
+# 2/3 part of the Makefile.
+if [ ${make_type} = "BSD" ]; then
+	cat >> ${make_file} <<-OBJECTS
+	SRCS!=find . -name \*.c
+	OBJS=\${SRCS:.c=.o}
+	OBJECTS
+else
+	echo 'OBJS=$(patsubst %.c,%.o,$(wildcard *.c))' >> ${make_file}
+fi
+
+# 3/3 part of the Makefile.
+cat >> "${make_file}" <<TARGETS
 
 all: compiled-module
 	\$(MAKE) check-executable
@@ -89,7 +107,12 @@ check: check-succeeded
 
 clean:
 	@rm -f *.o check-executable
-EOM
+TARGETS
+
+}
+
+produce_makefile BSD
+produce_makefile GNU
 
 # Perform building and checking
 ${TEST_DRIVER} make -C "$testdir" check