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53 lines
1.5 KiB
53 lines
1.5 KiB
dnl -*- Autoconf -*-
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dnl Copyright (C) 1993-2005 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Bruno Haible, Marcus Daniels, Sam Steingold.
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AC_PREREQ(2.13)
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dnl CL_MACHINE([MESSAGE], [PROGRAM_TO_RUN], [CROSS_MACRO], [DESTINATION], [CACHE_VAR])
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AC_DEFUN([CL_MACHINE],
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[AC_REQUIRE([AC_PROG_CC])dnl
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AC_REQUIRE([AC_C_CHAR_UNSIGNED])dnl
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cl_machine_file_c=$2
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if test -z "$[$5]"; then
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AC_CHECKING(for [$1])
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if test $cross_compiling = no; then
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cl_machine_file_h=$4
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cat > conftest.$ac_ext <<EOF
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#include "confdefs.h"
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EOF
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cat "$cl_machine_file_c" >> conftest.$ac_ext
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ORIGCC="$CC"
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if test $ac_cv_prog_gcc = yes; then
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# gcc -O (gcc version <= 2.3.2) crashes when compiling long long shifts for
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# target 80386. Strip "-O".
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CC=`echo "$CC " | sed -e 's/-O //g'`
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fi
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AC_TRY_EVAL(ac_link)
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CC="$ORIGCC"
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if test -s conftest; then
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echo "creating $cl_machine_file_h"
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./conftest > conftest.h
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if cmp -s "$cl_machine_file_h" conftest.h 2>/dev/null; then
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# The file exists and we would not be changing it
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rm -f conftest.h
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else
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rm -f "$cl_machine_file_h"
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mv conftest.h "$cl_machine_file_h"
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fi
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[$5]=1
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else
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echo "creation of $cl_machine_file_h failed"
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fi
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rm -f conftest*
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else
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$3([$4])
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fi
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fi
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])
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