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