1.1 --- a/configure.ac Sat Oct 05 17:07:16 2019 +0200
1.2 +++ b/configure.ac Sun Nov 03 15:35:29 2019 +0100
1.3 @@ -52,8 +52,11 @@
1.4 # in modern versions of autoconf, this is done by AC_PROG_CC
1.5 AM_PROG_CC_C_O
1.6
1.7 -# we require the current C standard
1.8 -AC_PROG_CC_STDC
1.9 +# we want c11, and may fall back to c99
1.10 +AX_CHECK_COMPILE_FLAG([-std=c11],
1.11 + [AX_APPEND_FLAG([-std=c11])],
1.12 + [AC_PROG_CC_C99]
1.13 +)
1.14
1.15 # where to place config macros
1.16 AC_CONFIG_HEADERS([config.h])
