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From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: <cygwin-apps AT sources DOT redhat DOT com>, <autoconf AT gnu DOT org>
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Subject: win32 compiler test V3a
Date: Fri, 16 Mar 2001 01:21:50 +1100
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Hopefully this is it (barring a rename on the high level interface.

I missed the CPPFLAGS in the last version..
If you're code is portable this is effective with a simple
AC_API_WIN32

Rob

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dnl COMPILER WIN32 support =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
AC_DEFUN(AC_PROG_CC_WIN32, [=0A=
dnl figure out how to run CC with access to the win32 api if present=0A=
dnl configure that as the CC program, =0A=
dnl WIN32 may be present with WINE, under cygwin, or under mingw,=0A=
dnl or cross compilers targeting those same three targets.=0A=
dnl as it happens, I can only test cygwin, so extra input here will be =
appreciated=0A=
dnl send bug reports to Robert Collins <rbtcollins AT hotmail DOT com>=0A=
=0A=
dnl logic: is CC already configured? if not, call AC_PROG_CC.=0A=
dnl if so - try it. If that doesn't work ,try -mwin32. If that doesn't =
work, fail=0A=
dnl=0A=
dnl 2001-03-15 - Changed from yes/no to true/false -suggested by Lars J =
Aas<larsa AT sim DOT no>=0A=
dnl 	* Change true to : - suggest by Alexandre Oliva =
<oliva AT lsd DOT ic DOT unicamp DOT br>=0A=
dnl	* changed layout on the basis of autoconf mailing list:=0A=
dnl		there are now two interfaces, a language specific one which sets=0A=
dnl		or clears WIN32 && WIN32FLAGS as appropriate=0A=
dnl=0A=
=0A=
AC_REQUIRE([AC_PROG_CC])=0A=
echo $ECHO_N "checking how to access the Win32 API..." >&6=0A=
WIN32FLAGS=3D=0A=
AC_TRY_COMPILE(,[#ifndef WIN32=0A=
#ifndef _WIN32=0A=
#error WIN32 or _WIN32 not defined=0A=
#endif=0A=
#endif], [=0A=
dnl found windows.h with the current config.=0A=
echo "${ECHO_T}Win32 API found by default" >&6=0A=
], [=0A=
dnl try -mwin32=0A=
save_cc=3D"$ac_compile"=0A=
dnl we change CC so config.log looks correct=0A=
save_CC=3D"$CC"=0A=
ac_compile=3D"$ac_compile -mwin32"=0A=
CC=3D"$CC -mwin32"=0A=
AC_TRY_COMPILE(,[#ifndef WIN32=0A=
#ifndef _WIN32=0A=
#error WIN32 or _WIN32 not defined=0A=
#endif=0A=
#endif], [=0A=
dnl found windows.h using -mwin32=0A=
echo "${ECHO_T}Win32 API found via -mwin32" >&6=0A=
ac_compile=3D"$save_cc"=0A=
CC=3D"$save_CC"=0A=
WIN32FLAGS=3D"-mwin32"=0A=
], [=0A=
ac_compile=3D"$save_cc"=0A=
CC=3D"$save_CC"=0A=
echo "${ECHO_T}Win32 API Not found" >&6=0A=
])=0A=
])=0A=
=0A=
AC_PROVIDE([$0])=0A=
])=0A=
=0A=
AC_DEFUN(AC_PROG_CXX_WIN32, [=0A=
dnl figure out how to run CXX with access to the win32 api if present=0A=
dnl configure that as the CXX program,=0A=
dnl WIN32 may be present with WINE, under cygwin, or under mingw,=0A=
dnl or cross compilers targeting those same three targets.=0A=
dnl as it happens, I can only test cygwin, so extra input here will be =
appreciated=0A=
dnl send bug reports to Robert Collins <rbtcollins AT hotmail DOT com>=0A=
=0A=
echo $ECHO_N "checking how to access the Win32 API..." >&6=0A=
WIN32FLAGS=3D=0A=
AC_TRY_COMPILE(,[#ifndef WIN32=0A=
#ifndef _WIN32=0A=
#error WIN32 or _WIN32 not defined=0A=
#endif=0A=
#endif], [=0A=
dnl found windows.h with the current config.=0A=
echo "${ECHO_T}Win32 API found by default" >&6=0A=
], [=0A=
dnl try -mwin32=0A=
save_cc=3D"$ac_compile"=0A=
dnl we change CC so config.log looks correct=0A=
save_CXX=3D"$CXX"=0A=
ac_compile=3D"$ac_compile -mwin32"=0A=
CXX=3D"$CXX -mwin32"=0A=
AC_TRY_COMPILE(,[#ifndef WIN32=0A=
#ifndef _WIN32=0A=
#error WIN32 or _WIN32 not defined=0A=
#endif=0A=
#endif], [=0A=
dnl found windows.h using -mwin32=0A=
echo "${ECHO_T}Win32 API found via -mwin32" >&6=0A=
ac_compile=3D"$save_cc"=0A=
CXX=3D"$save_CXX"=0A=
WIN32FLAGS=3D"-mwin32"=0A=
], [=0A=
ac_compile=3D"$save_cc"=0A=
CXX=3D"$save_CXX"=0A=
echo "${ECHO_T}Win32 API Not found" >&6=0A=
])=0A=
])=0A=
=0A=
AC_PROVIDE([$0])=0A=
])=0A=
=0A=
=0A=
AC_DEFUN(AC_API_WIN32, [=0A=
dnl high level interface for finding out compiler support for win32.=0A=
=0A=
AC_LANG_CASE([C],	AC_PROG_CC_WIN32 [CFLAGS=3D"$WIN32FLAGS $CFLAGS"=0A=
CPPFLAGS=3D"$WIN32FLAGS $CPPFLAGS"],=0A=
             [C++],	AC_PROG_CXX_WIN32 [CXXFLAGS=3D"$WIN32FLAGS $CXXFLAGS"=0A=
CPPFLAGS=3D"$WIN32FLAGS $CPPFLAGS"],=0A=
             [echo "No macro support for WIN32 with $_AC_LANG"=0A=
		exit 1])=0A=
])=0A=
=0A=
dnl end compiler WIN32 support =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=

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