build-sys: test for cxx-11 after AC_USE_SYSTEM_EXTENSIONS

This avoids the following autoconf warning:
configure.ac:89: warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
../../lib/autoconf/specific.m4:368: AC_USE_SYSTEM_EXTENSIONS is expanded from...
configure.ac:89: the top level
This commit is contained in:
Felipe Sateler 2017-10-13 12:23:37 -03:00 committed by Tanu Kaskinen
parent 805efbb11c
commit 69fcfa60b5

View file

@ -84,9 +84,9 @@ AM_PROG_CC_C_O
# Only required if you want the WebRTC canceller -- no runtime dep on
# libstdc++ otherwise
AC_PROG_CXX
AX_CXX_COMPILE_STDCXX_11([ext],[optional])
AC_PROG_GCC_TRADITIONAL
AC_USE_SYSTEM_EXTENSIONS
AX_CXX_COMPILE_STDCXX_11([ext],[optional])
# M4