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authorPeter Wu <peter@lekensteyn.nl>2016-08-31 15:58:20 +0200
committerGuy Harris <guy@alum.mit.edu>2016-09-06 02:42:27 +0000
commit232a8794293bf654fb61122adffa6a7aa2989cc0 (patch)
treefdc95cf5894c7515f880c7974ccff36f3e2ae8d8 /configure.ac
parent5eb9170227a590560003dfc3b654e7be1b942b9a (diff)
Allow a lot more C99 features
Flexible array members are supported by gcc, clang and even MSVC2013. Note, so far it was only used in the Windows-specific airpcap.h. Trailing commas in enum declaration are already in use since for these dissectors (commit ID is the first occurrence): epan/dissectors/packet-gluster.h v2.1.0rc0-1070-g3b706ba epan/dissectors/packet-ipv6.c v2.1.2rc0-81-ge07b4aa epan/dissectors/packet-netlink.h v2.3.0rc0-389-gc0ab12b epan/dissectors/packet-netlink-netfilter.c v2.3.0rc0-239-g1767e08 epan/dissectors/packet-netlink-route.c v2.3.0rc0-233-g2a80b40 epan/dissectors/packet-quic.c v2.3.0rc0-457-gfa320f8 Inline functions using the "inline" keyword are supported via all glib versions we support (if it is missing, glib will define a suitable inline macro). Other c99 functions listed in the README.developer document were found to be compatible with GCC 4.4.7, Clang 3.4.2 and MSVC 2013. Change-Id: If5bab03bfd8577b15a24bedf08c03bdfbf34317a Reviewed-on: https://code.wireshark.org/review/17421 Reviewed-by: Guy Harris <guy@alum.mit.edu>
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac11
1 files changed, 5 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac
index fa8a4c220b..4527988511 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,10 +69,12 @@ AC_CONFIG_LIBOBJ_DIR([wsutil])
#
# Checks for programs used in the main build process.
#
-AC_PROG_CC_STDC
-if test "$ac_cv_prog_cc_stdc" = "no"
+# See doc/README.developer for allowed C99 features
+#
+AC_PROG_CC_C99
+if test "$ac_cv_prog_cc_c99" = "no"
then
- AC_MSG_ERROR([The C compiler does not support standard C])
+ AC_MSG_ERROR([The C compiler does not support C99])
fi
AC_PROG_CPP
@@ -690,9 +692,6 @@ then
fi
fi
-#Clang only
-AC_WIRESHARK_COMPILER_FLAGS_CHECK(-Wc99-extensions, C)
-
#
# Try to add some additional checks to CFLAGS.
# These are not enabled by default, because the warnings they produce