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authorJuan Quintela <quintela@redhat.com>2009-07-21 14:11:18 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2009-07-27 14:10:55 -0500
commit70071e1707b035b9b750f4494ae53c6ab696c4fc (patch)
treed5ee809db881eb33927d8e6ddc7f1047f6c9aa7f /rules.mak
parent2358a4940b7f9b863fa8084960f40517985df8c1 (diff)
move cc-option definition to rules.mak
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'rules.mak')
-rw-r--r--rules.mak6
1 files changed, 6 insertions, 0 deletions
diff --git a/rules.mak b/rules.mak
index 8d6d96e5b1..f9d0ca09e3 100644
--- a/rules.mak
+++ b/rules.mak
@@ -17,3 +17,9 @@ LINK = $(call quiet-command,$(CC) $(LDFLAGS) -o $@ $(1) $(ARLIBS_BEGIN) $(ARLIBS
$(call quiet-command,rm -f $@ && $(AR) rcs $@ $^," AR $(TARGET_DIR)$@")
quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
+
+# cc-option
+# Usage: CFLAGS+=$(call cc-option, $(CFLAGS), -falign-functions=0, -malign-functions=0)
+
+cc-option = $(shell if $(CC) $(1) $(2) -S -o /dev/null -xc /dev/null \
+ > /dev/null 2>&1; then echo "$(2)"; else echo "$(3)"; fi ;)