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authorJeff Mahoney <jeffm@suse.com>2018-04-30 10:37:08 -0400
committerDavid Sterba <dsterba@suse.com>2018-06-07 16:37:35 +0200
commiteb7b42003a7d3a1d4c0253c6d5a248c9078c6d19 (patch)
treef09fbe12c1bac6772668daa4fabc6f48e56bc835 /Makefile
parent1c73f56f5a41f44a6196d06675cfb0fcdd2bbd9d (diff)
btrfs-progs: build: detect whether -std=gnu90 is supported
GCC releases prior to 4.5.0 don't support -std=gnu90 so btrfs-progs won't build at all on older distros. We can detect whether the compiler supports -std=gnu90 and fall back to -std=gnu89 if it doesn't. AX_CHECK_COMPILE_FLAG is the right way to do this, but it depends on autoconf 2.64. AX_GCC_VERSION has been deprecated, so we'll use that only for earlier autoconf versions so we can drop it when we drop support for older autoconf releases. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile1
1 files changed, 0 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index cbd8553..8144820 100644
--- a/Makefile
+++ b/Makefile
@@ -63,7 +63,6 @@ ABSTOPDIR = $(shell pwd)
TOPDIR := .
# Common build flags
-CSTD = -std=gnu90
CFLAGS = $(SUBST_CFLAGS) \
$(CSTD) \
-include config.h \