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Viewing changes to libclamav/c++/llvm/autoconf/m4/build_exeext.m4

  • Committer: Bazaar Package Importer
  • Author(s): Kees Cook
  • Date: 2007-02-20 10:33:44 UTC
  • mto: This revision was merged to the branch mainline in revision 16.
  • Revision ID: james.westby@ubuntu.com-20070220103344-zgcu2psnx9d98fpa
Tags: upstream-0.90
Import upstream version 0.90

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libclamav/c++/llvm/autoconf/m4/build_exeext.m4
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# Check for the extension used for executables on build platform.
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# This is necessary for cross-compiling where the build platform
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# may differ from the host platform.
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AC_DEFUN([AC_BUILD_EXEEXT],
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[
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AC_MSG_CHECKING([for executable suffix on build platform])
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AC_CACHE_VAL(ac_cv_build_exeext,
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[if test "$CYGWIN" = yes || test "$MINGW32" = yes; then
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  ac_cv_build_exeext=.exe
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else
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  ac_build_prefix=${build_alias}-
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  AC_CHECK_PROG(BUILD_CC, ${ac_build_prefix}gcc, ${ac_build_prefix}gcc)
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  if test -z "$BUILD_CC"; then
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     AC_CHECK_PROG(BUILD_CC, gcc, gcc)
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     if test -z "$BUILD_CC"; then
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       AC_CHECK_PROG(BUILD_CC, cc, cc, , , /usr/ucb/cc)
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     fi
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  fi
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  test -z "$BUILD_CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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  ac_build_link='${BUILD_CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AS_MESSAGE_LOG_FD'
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  rm -f conftest*
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  echo 'int main () { return 0; }' > conftest.$ac_ext
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  ac_cv_build_exeext=
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  if AC_TRY_EVAL(ac_build_link); then
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    for file in conftest.*; do
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      case $file in
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      *.c | *.o | *.obj | *.dSYM) ;;
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      *) ac_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
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      esac
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    done
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  else
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    AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.])
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  fi
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  rm -f conftest*
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  test x"${ac_cv_build_exeext}" = x && ac_cv_build_exeext=blank
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fi])
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BUILD_EXEEXT=""
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test x"${ac_cv_build_exeext}" != xblank && BUILD_EXEEXT=${ac_cv_build_exeext}
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AC_MSG_RESULT(${ac_cv_build_exeext})
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ac_build_exeext=$BUILD_EXEEXT
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AC_SUBST(BUILD_EXEEXT)])