1 dnl Copyright (C) 2010 Vincent Torri <vtorri at univ-evry dot fr>
2 dnl and Albin Tonnerre <albin dot tonnerre at gmail dot com>
3 dnl That code is public domain and can be freely used or copied.
5 dnl Macro that checks if a compiler flag is supported by the compiler.
7 dnl Usage: OPJ_COMPILER_FLAG(flag)
8 dnl flag is added to CFLAGS if supported.
10 AC_DEFUN([OPJ_COMPILER_FLAG],
13 CFLAGS_save="${CFLAGS}"
17 AC_MSG_CHECKING([whether the compiler supports $1])
20 [AC_LANG_PROGRAM([[]])],
23 AC_MSG_RESULT([${have_flag}])
25 if test "x${have_flag}" = "xno" ; then
26 CFLAGS="${CFLAGS_save}"