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Mail Archives: cygwin-apps/2001/03/15/20:16:23

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Message-ID: <034801c0adae$5bb97750$0200a8c0@lifelesswks>
From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: <cygwin-apps AT cygwin DOT com>
Cc: <autoconf AT gnu DOT org>
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Subject: win32 v4
Date: Fri, 16 Mar 2001 11:16:32 +1100
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X-OriginalArrivalTime: 16 Mar 2001 00:10:41.0552 (UTC) FILETIME=[89945100:01C0ADAD]

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This should be ok now. With 2 exceptions:

the AC_REQUIRE lines were causing a problem - so I've dnl'd them barring
some feedback from a more m4 knowedgable person.

I'm a little unsure whether overriding both CPPFLAGS and CFLAGS is a
good idea, but the reason is that non automake makefile.in's may not use
CPPFLAGS, so CFLAGS does need to be set. Not setting CPPFLAGS results in
AC_CHECK_HEADER tests for win32 headers failing. The upshot is that in
automake environments -mwin32 is added twice...

If there's an easy way to test for the presence of automake in the
macro, I could make this conditional... I'll visit the automake doco in
more detail later today...

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=
# figure out how to run CC with access to the win32 api if present=0A=
# configure that as the CC program, =0A=
# WIN32 may be present with WINE, under cygwin, or under mingw,=0A=
# or cross compilers targeting those same three targets.=0A=
# as it happens, I can only test cygwin, so extra input here will be =
appreciated=0A=
# send bug reports to Robert Collins <rbtcollins AT hotmail DOT com>=0A=
#=0A=
# logic: is CC already configured? if not, call AC_PROG_CC.=0A=
# if so - try it. If that doesn't work ,try -mwin32. If that doesn't =
work, fail=0A=
#=0A=
# 2001-03-15 - Changed from yes/no to true/false -suggested by Lars J =
Aas<larsa AT sim DOT no>=0A=
# 	* Change true to : - suggest by Alexandre Oliva =
<oliva AT lsd DOT ic DOT unicamp DOT br>=0A=
#	* changed layout on the basis of autoconf mailing list:=0A=
#		there are now two interfaces, a language specific one which sets=0A=
#		or clears WIN32 && WIN32FLAGS as appropriate=0A=
#	* m4 Syntax fixup: Akim Demaille <akim AT epita DOT fr>=0A=
#=0A=
# All faults& bugs are mine - Robert=0A=
=0A=
AC_DEFUN([AC_PROG_CC_WIN32], [=0A=
dnl AC_REQUIRE([AC_PROG_CC])dnl=0A=
AC_MSG_CHECKING([how to access the Win32 API])=0A=
WIN32FLAGS=3D=0A=
AC_TRY_COMPILE(,[=0A=
#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=
AC_MSG_RESULT([present by default])=0A=
], [=0A=
dnl try -mwin32=0A=
ac_compile_save=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(,[=0A=
#ifndef WIN32=0A=
# ifndef _WIN32=0A=
#  error WIN32 or _WIN32 not defined=0A=
# endif=0A=
#endif], [=0A=
dnl found windows.h using -mwin32=0A=
AC_MSG_RESULT([found via -mwin32])=0A=
ac_compile=3D"$ac_compile_save"=0A=
CC=3D"$save_CC"=0A=
WIN32FLAGS=3D"-mwin32"=0A=
], [=0A=
ac_compile=3D"$ac_compile_save"=0A=
CC=3D"$save_CC"=0A=
AC_MSG_RESULT([not found])=0A=
])=0A=
])=0A=
=0A=
])=0A=
=0A=
=0A=
# figure out how to run CXX with access to the win32 api if present=0A=
# configure that as the CXX program,=0A=
# WIN32 may be present with WINE, under cygwin, or under mingw,=0A=
# or cross compilers targeting those same three targets.=0A=
# as it happens, I can only test cygwin, so extra input here will be =
appreciated=0A=
# send bug reports to Robert Collins <rbtcollins AT hotmail DOT com>=0A=
=0A=
AC_DEFUN([AC_PROG_CXX_WIN32], [=0A=
dnl AC_REQUIRE([AC_PROG_CXX])dnl=0A=
AC_MSG_CHECKING([how to access the Win32 API])=0A=
WIN32FLAGS=3D=0A=
AC_TRY_COMPILE(,[=0A=
#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=
AC_MSG_RESULT([present by default])=0A=
], [=0A=
dnl try -mwin32=0A=
ac_compile_save=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(,[=0A=
#ifndef WIN32=0A=
# ifndef _WIN32=0A=
#  error WIN32 or _WIN32 not defined=0A=
# endif=0A=
#endif], [=0A=
dnl found windows.h using -mwin32=0A=
AC_MSG_RESULT([found via -mwin32])=0A=
ac_compile=3D"$ac_compile_save"=0A=
CXX=3D"$save_CXX"=0A=
WIN32FLAGS=3D"-mwin32"=0A=
], [=0A=
ac_compile=3D"$ac_compile_save"=0A=
CXX=3D"$save_CXX"=0A=
AC_MSG_RESULT([not found])=0A=
])=0A=
])=0A=
=0A=
])=0A=
=0A=
=0A=
# high level interface for finding out compiler support for win32.=0A=
AC_DEFUN([AC_API_WIN32], [=0A=
=0A=
AC_LANG_CASE(=0A=
	    [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=
             [AC_FATAL([No macro support for WIN32 with ] _AC_LANG) ])=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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