Makefile: Use single-colon `all' rule.

Later GNU Make for some reason runs double-colon rule pieces
sequentially.

diff --git a/Makefile b/Makefile
index 5488b340e3044f9e2f852f0284b605f109cf0e35..12d1c6562cefd822c6e4afe6aadb70ed868e89ed 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -33,7 +33,7 @@ LD/$1                  = $$(CC/$1)
        $$(call vtag,CC/$1)$$(CC/$1) -c -o $$@ $$(CFLAGS) $$(CFLAGS/$1) $$<
 %-$1.o: %.S
        $$(call vtag,AS/$1)$$(AS/$1) -c -o $$@ $$(ASFLAGS) $$(ASFLAGS/$1) $$<
-all:: xchg-$1
+all: xchg-$1
 xchg-$1: xchg-$1.o main-$1.o
        $$(call vtag,LD/$1)$$(LD/$1) -o $$@ $$^
 endef