| dnl A version of AS_COMPILER_FLAG that supports both C and C++. |
| dnl Based on: |
| |
| dnl as-compiler-flag.m4 0.1.0 |
| dnl autostars m4 macro for detection of compiler flags |
| dnl David Schleef <ds@schleef.org> |
| dnl $Id: as-compiler-flag.m4,v 1.1 2005/06/18 18:02:46 burgerman Exp $ |
| |
| dnl TP_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) |
| dnl Tries to compile with the given CFLAGS and CXXFLAGS. |
| dnl |
| dnl Runs ACTION-IF-ACCEPTED if the compiler for the currently selected |
| dnl AC_LANG can compile with the flags, and ACTION-IF-NOT-ACCEPTED otherwise. |
| |
| AC_DEFUN([TP_COMPILER_FLAG], |
| [ |
| AC_MSG_CHECKING([to see if compiler understands $1]) |
| |
| save_CFLAGS="$CFLAGS" |
| save_CXXFLAGS="$CXXFLAGS" |
| CFLAGS="$CFLAGS $1" |
| CXXFLAGS="$CXXFLAGS $1" |
| |
| AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no]) |
| CFLAGS="$save_CFLAGS" |
| CXXFLAGS="$save_CXXFLAGS" |
| |
| if test "X$flag_ok" = Xyes ; then |
| $2 |
| true |
| else |
| $3 |
| true |
| fi |
| AC_MSG_RESULT([$flag_ok]) |
| ]) |
| |
| dnl TP_ADD_COMPILER_FLAG(VARIABLE, CFLAGS) |
| dnl Append CFLAGS to VARIABLE if the compiler supports them. |
| AC_DEFUN([TP_ADD_COMPILER_FLAG], |
| [ |
| TP_COMPILER_FLAG([$2], [$1="[$]$1 $2"]) |
| ]) |
