software/common.mak: support changing source directory

diff --git a/software/common.mak b/software/common.mak
index 168dba84ffecd280b8a3835fb274e74440d6b707..2b238a51352c06d3e1c534eeb463b79e2680f927 100644 (file)
--- a/software/common.mak
+++ b/software/common.mak
@@ -44,9 +44,9 @@ LDFLAGS = -nostdlib -nodefaultlibs
 # compile and generate dependencies, based on
 # http://scottmcpeak.com/autodepend/autodepend.html
 
-%.o: %.c
-       $(CC) -c $(CFLAGS) $*.c -o $*.o
-       @$(CC_normal) -MM $(CFLAGS) $*.c > $*.d
+%.o: $(SRCDIR)%.c
+       $(CC) -c $(CFLAGS) $(SRCDIR)$*.c -o $*.o
+       @$(CC_normal) -MM $(CFLAGS) $(SRCDIR)$*.c > $*.d
        @mv -f $*.d $*.d.tmp
        @sed -e 's|.*:|$*.o:|' < $*.d.tmp > $*.d
        @sed -e 's/.*://' -e 's/\\$$//' < $*.d.tmp | fmt -1 | \