build: Use --std=gnu99

It's actually very nice to be able to declare loop variables inside
the initializer.

Ideally we could turn off nested functions though.

Closes: #284
Approved by: jlebon

diff --git a/Makefile.am b/Makefile.am
index e49b7c59d970df1cfa12297a2e325e627f6894d3..cf67c4ba19fa0905890bb74f31fb7494399309d5 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -27,7 +27,7 @@ AM_CPPFLAGS += -DDATADIR='"$(datadir)"' -DLIBEXECDIR='"$(libexecdir)"' \
        -DG_LOG_DOMAIN=\"OSTree\" \
        -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_40 -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_40 \
        -DSOUP_VERSION_MIN_REQUIRED=SOUP_VERSION_2_40 -DSOUP_VERSION_MAX_ALLOWED=SOUP_VERSION_2_48
-AM_CFLAGS += $(WARN_CFLAGS)
+AM_CFLAGS += -std=gnu99 $(WARN_CFLAGS)
 DISTCHECK_CONFIGURE_FLAGS += --enable-gtk-doc --disable-maintainer-mode
 
 GITIGNOREFILES = aclocal.m4 build-aux/ buildutil/*.m4 config.h.in gtk-doc.make