diff -r e54e0b24e98e -r 97c53f7ef5e4 configure.ac --- a/configure.ac Wed Nov 06 20:34:54 2019 +0100 +++ b/configure.ac Wed Nov 06 21:01:25 2019 +0100 @@ -46,10 +46,7 @@ LT_INIT # we want c11, and may fall back to c99 -AX_CHECK_COMPILE_FLAG([-std=c11], - [AX_APPEND_FLAG([-std=c11])], - AC_PROG_CC_C99 -) +AC_PROG_CC_C99 # we want to support automake < 1.14, so we need this deprecated macro # it tests, whether the compiler allows -c and -o simultaneously