fix AS detection on (from FreeBSD)

weidai11 · Jan 27, 2011 · 3492bcc · 3492bcc
1 parent 5b3f486
commit 3492bcc
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/GNUmakefile b/GNUmakefile
@@ -28,9 +28,9 @@ GCC42_OR_LATER = $(shell $(CXX) -v 2>&1 | $(EGREP) -c "^gcc version (4.[2-9]|[5-
 INTEL_COMPILER = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "\(ICC\)")
 ICC111_OR_LATER = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "\(ICC\) ([2-9][0-9]|1[2-9]|11\.[1-9])")
 IS_SUN_CC = $(shell $(CXX) -V 2>&1 | $(EGREP) -c "CC: Sun")
-GAS210_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.[1-9][0-9]|[3-9])")
-GAS217_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.1[7-9]|2\.[2-9]|[3-9])")
-GAS219_OR_LATER = $(shell echo "" | $(AS) -v 2>&1 | $(EGREP) -c "GNU assembler version (2\.19|2\.[2-9]|[3-9])")
+GAS210_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | $(EGREP) -c "GNU assembler version (2\.[1-9][0-9]|[3-9])")
+GAS217_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | $(EGREP) -c "GNU assembler version (2\.1[7-9]|2\.[2-9]|[3-9])")
+GAS219_OR_LATER = $(shell $(CXX) -xc -c /dev/null -Wa,-v -o/dev/null 2>&1 | $(EGREP) -c "GNU assembler version (2\.19|2\.[2-9]|[3-9])")
 ISMINGW = $(shell $(CXX) --version 2>&1 | $(EGREP) -c "mingw")
 
 ifneq ($(GCC42_OR_LATER),0)