diff -Naur a/configure.ac b/configure.ac
--- a/configure.ac	2020-03-11 01:36:18.000000000 +0000
+++ b/configure.ac	2020-06-01 20:39:43.852771766 +0000
@@ -4185,9 +4185,7 @@
 DEPENDS=`echo $SOURCES | tr ' ' '\n'`
 for EXT in asm cc m c S; do
     OBJECTS=`echo "$OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.'$EXT',$(objects)/\1.lo,g'`
-    DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\\
-\\$(objects)/\\2.lo: \\1/\\2.$EXT \\$(objects)/.created\\\\
-	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
+    DEPENDS=`echo "$DEPENDS" | sed "s,^\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.$EXT\\$,\\\n\\$(objects)/\\2.lo: \\1/\\2.$EXT \\$(objects)/.created\\\n	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
 done
 
 GEN_OBJECTS=`echo "$GEN_SOURCES" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
@@ -4195,23 +4193,17 @@
 VERSION_OBJECTS=`echo $VERSION_SOURCES`
 VERSION_DEPENDS=`echo $VERSION_SOURCES`
 VERSION_OBJECTS=`echo "$VERSION_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.rc,$(objects)/\1.o,g'`
-VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\\
-\\$(objects)/\\2.o: \\1/\\2.rc \\$(objects)/.created\\\\
-	\\$(WINDRES) \\$< \\$@,g"`
+VERSION_DEPENDS=`echo "$VERSION_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.rc,\\\n\\$(objects)/\\2.o: \\1/\\2.rc \\$(objects)/.created\\\n	\\$(WINDRES) \\$< \\$@,g"`
 
 SDLMAIN_OBJECTS=`echo $SDLMAIN_SOURCES`
 SDLMAIN_DEPENDS=`echo $SDLMAIN_SOURCES`
 SDLMAIN_OBJECTS=`echo "$SDLMAIN_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
-SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
-\\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
-	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
+SDLMAIN_DEPENDS=`echo "$SDLMAIN_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\n\\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\n	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
 
 SDLTEST_OBJECTS=`echo $SDLTEST_SOURCES`
 SDLTEST_DEPENDS=`echo $SDLTEST_SOURCES`
 SDLTEST_OBJECTS=`echo "$SDLTEST_OBJECTS" | sed 's,[[^ ]]*/\([[^ ]]*\)\.c,$(objects)/\1.lo,g'`
-SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\\
-\\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\\
-	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
+SDLTEST_DEPENDS=`echo "$SDLTEST_DEPENDS" | sed "s,\\([[^ ]]*\\)/\\([[^ ]]*\\)\\.c,\\\n\\$(objects)/\\2.lo: \\1/\\2.c \\$(objects)/.created\\\n	\\$(RUN_CMD_CC)\\$(LIBTOOL) --tag=CC --mode=compile \\$(CC) \\$(CFLAGS) \\$(EXTRA_CFLAGS) $DEPENDENCY_TRACKING_OPTIONS -c \\$< -o \\$@,g"`
 
 # Set runtime shared library paths as needed