[project @ 2004-05-08 01:49:56 by dons]
[ghc-hetmet.git] / configure.ac
index 49d7a07..782b9b9 100644 (file)
@@ -105,6 +105,24 @@ alpha*-unknown-freebsd*)
         HostVendor_CPP='unknown'
         HostOS_CPP='freebsd'
         ;;
+alpha*-unknown-openbsd*)
+       HostPlatform=alpha-unknown-openbsd
+       TargetPlatform=alpha-unknown-openbsd
+       BuildPlatform=alpha-unknown-openbsd
+        HostPlatform_CPP='alpha_unknown_openbsd'
+        HostArch_CPP='alpha'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='openbsd'
+        ;;
+amd64*-*-openbsd*)
+       HostPlatform=x86_64-unknown-openbsd
+       TargetPlatform=x86_64-unknown-openbsd
+       BuildPlatform=x86_64-unknown-openbsd
+        HostPlatform_CPP='x86_64_unknown_openbsd'
+        HostArch_CPP='x86_64'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='openbsd'
+        ;;
 arm*-linux*)
         HostPlatform=arm-unknown-linux # hack again
         TargetPlatform=arm-unknown-linux
@@ -114,6 +132,15 @@ arm*-linux*)
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
         ;;
+arm*-openbsd*)
+        HostPlatform=arm-unknown-openbsd
+        TargetPlatform=arm-unknown-openbsd
+        BuildPlatform=arm-unknown-openbsd
+        HostPlatform_CPP='arm_unknown_openbsd'                 
+        HostArch_CPP='arm'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='openbsd'
+        ;;
 hppa*-*-linux*)
         HostPlatform=hppa-unknown-linux # hack again
         TargetPlatform=hppa-unknown-linux
@@ -123,6 +150,15 @@ hppa*-*-linux*)
         HostVendor_CPP='unknown'                             
         HostOS_CPP='linux'
         ;;
+hppa*-*-openbsd*)
+        HostPlatform=hppa-unknown-openbsd # hack again
+        TargetPlatform=hppa-unknown-openbsd
+        BuildPlatform=hppa-unknown-openbsd
+        HostPlatform_CPP='hppa_unknown_openbsd'                
+        HostArch_CPP='hppa'
+        HostVendor_CPP='unknown'                             
+        HostOS_CPP='openbsd'
+        ;;
 hppa1.1-hp-hpux*)
        HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
        TargetPlatform=hppa1.1-hp-hpux
@@ -350,6 +386,15 @@ powerpc-unknown-linux*)
         HostVendor_CPP='unknown'
         HostOS_CPP='linux'
         ;;
+powerpc-unknown-openbsd*)
+        HostPlatform=powerpc-unknown-openbsd
+        TargetPlatform=powerpc-unknown-openbsd
+        BuildPlatform=powerpc-unknown-openbsd
+        HostPlatform_CPP='powerpc_unknown_openbsd'
+        HostArch_CPP='powerpc'
+        HostVendor_CPP='unknown'
+        HostOS_CPP='openbsd'
+        ;;
 s390-ibm-linux*)
        HostPlatform=s390-ibm-linux
        TargetPlatform=s390-ibm-linux #hack
@@ -448,15 +493,32 @@ dnl Remove common automounter nonsense
 dnl
 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^//\(.\)/|\1:/|' `
 
-dnl Find 'hardtop_plat', the native format for 'hardtop' (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes being escaped).
+dnl Find 'hardtop_plat', the native format for 'hardtop' 
+dnl (i.e., right kind of \dnl slashes on a Win32 box, but with b-slashes being escaped).
 dnl
+dnl Note OSTYPE: On Cygwin we need to use 'cygpath' to convert /cygdrive/c/foo to c:/foo
+dnl             but we must not do that if we aren't building using Cygwin (notably msys), 
+dnl             because cygpath doesn't exist.  It seems that 'bash' sets OSTYPE to 'cygwin' 
+dnl             or 'msys' respectively, but cygwin's 'sh' does not.  So we hackily assume
+dnl             that if the shell hasn't set it to 'msys' then we must be in Cygwin.  Sigh.
+dnl
+dnl             The Right Thing is probably to test $BuildPlatform instead, but we are sloppy 
+dnl             about setting that correctly at the moment, so we just work around for now.
+dnl
+dnl             The quotes round "$(OSTYPE)" are essential, for the Cygwin-sh case where OSTYPE
+dnl             is not set.
 case $HostPlatform in
   i386-unknown-mingw32 | i386-unknown-cygwin32)
-       # convert $hardtop to a path that mingw will understand too
-       cyghardtop=${hardtop}
-       hardtop=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@/@g'`
-       hardtop_plat=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@\\\\\\\\@g'`
-       ;;
+        if test "${OSTYPE}" != "msys" 
+          then
+            # convert $hardtop to a path that mingw will understand too
+            cyghardtop=${hardtop}
+            hardtop=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@/@g'`
+            hardtop_plat=`cygpath -w ${cyghardtop} | sed -e 's@\\\\@\\\\\\\\@g'`
+          else
+            hardtop_plat=${hardtop}
+        fi
+        ;;
   *)
        hardtop_plat=${hardtop}
        ;;
@@ -478,24 +540,21 @@ dnl ** What command to use to compile compiler sources ?
 dnl --------------------------------------------------------------
 
 AC_ARG_WITH(ghc,
-[  --with-ghc=<haskell compiler>
-        Use a command different from 'ghc' to compile GHC-specific Haskell code
-           (including GHC itself).
-],
+[AC_HELP_STRING([--with-ghc=ARG],
+       [Use ARG as the path to GHC  [default=autodetect]])],
 [ WithGhc="$withval" ],
 [ 
   if test "$GHC" = ""; then
     AC_PATH_PROG(GHC,ghc)
   fi
   WithGhc=$GHC
-]
-)
+])
 AC_SUBST(WithGhc)
 
 AC_ARG_WITH(hc,
-[  --with-hc=<haskell compiler>
-        Use a command different from 'ghc' to compile generic Haskell code.
-],
+[AC_HELP_STRING([--with-hc=ARG],
+        [Use ARG as the path to the compiler for compiling ordinary
+        Haskell code  (default= value of --with-ghc)])],
 [WithHc="$withval"],
 [WithHc=$WithGhc]
 )
@@ -515,13 +574,16 @@ AC_PATH_PROG(HBC,hbc)
 dnl ** Which gcc to use?
 dnl --------------------------------------------------------------
 AC_ARG_WITH(gcc,
-[  --with-gcc=<gcc command>
-        Use a different command instead of 'gcc' for the GNU C compiler.
-],
+[AC_HELP_STRING([--with-gcc=ARG],
+        [Use ARG as the path to GCC  [default=autodetect]])],
 [WhatGccIsCalled="$withval"
- if test "x$HostPlatform" = "xi386-unknown-mingw32"; then
-    # Canonicalise to <drive>:/path/to/gcc
-    withval=`cygpath -w ${withval} | sed -e 's@\\\\@/@g' `
+ if test "x$HostPlatform" = "xi386-unknown-mingw32"
+    then
+       if test "${OSTYPE}" != "msys"
+         then
+         # Canonicalise to <drive>:/path/to/gcc
+         withval=`cygpath -w ${withval} | sed -e 's@\\\\@/@g' `
+       fi
  fi;
  CC="$withval"],
 [WhatGccIsCalled="gcc"]
@@ -531,11 +593,15 @@ AC_SUBST(WhatGccIsCalled)
 dnl ** Booting from .hc files?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(hc-boot,
-[  --enable-hc-boot
-        Boot the Glasgow Haskell Compiler from intermediate .hc files.
-        (This option is mostly of interest to porters.)
+[AC_HELP_STRING([--enable-hc-boot],
+[Boot the Glasgow Haskell Compiler from intermediate .hc files.
+ (This option is mostly of interest to porters.) [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+       BootingFromHc=YES
+  else
+       BootingFromHc=NO
+  fi
 ],
-[BootingFromHc=YES],
 [BootingFromHc=NO]
 )
 AC_SUBST(BootingFromHc)
@@ -543,12 +609,16 @@ AC_SUBST(BootingFromHc)
 dnl ** Booting from unregisterised .hc files?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(hc-boot-unregisterised,
-[  --enable-hc-boot-unregisterised
-        With --enable-hc-boot, treat the intermediate .hc files as
-        unregisterised rather than registerised code.
-        (This option is mostly of interest to porters.)
+[AC_HELP_STRING([--enable-hc-boot-unregisterised],
+[ With --enable-hc-boot, treat the intermediate .hc files as
+ unregisterised rather than registerised code.
+ (This option is mostly of interest to porters.) [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+       BootingFromUnregisterisedHc=YES
+  else
+       BootingFromUnregisterisedHc=NO
+  fi
 ],
-[BootingFromUnregisterisedHc=YES],
 [BootingFromUnregisterisedHc=NO]
 )
 AC_SUBST(BootingFromUnregisterisedHc)
@@ -564,13 +634,17 @@ if test "$BootingFromHc" = "NO" -a "$WithGhc" = "" -a -d "$srcdir/ghc"; then
 AC_MSG_ERROR([GHC is required unless bootstrapping from .hc files.])
 fi;
 
-dnl ** Enable multi-thread friendly RTS?
+dnl ** --enable-threaded-rts (not used any more)
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(threaded-rts,
-[  --enable-threaded-rts
-        Support better interop with OS threads.
+[AC_HELP_STRING([--enable-threaded-rts],
+[DEPRECATED (backwards compatibility only). [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+       ThreadedRts=YES
+  else
+       ThreadedRts=NO
+  fi
 ],
-[ThreadedRts=YES],
 [ThreadedRts=NO]
 )
 AC_SUBST(ThreadedRts)
@@ -611,43 +685,43 @@ dnl fi
 dnl ** Enable the building of the ObjectIO?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(objectio,
-[  --enable-objectio
-        Build ObjectIO, a portable GUI library for Haskell.
+[AC_HELP_STRING([--enable-objectio],
+[Build ObjectIO, a portable GUI library for Haskell. [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+       GhcLibsWithObjectIO=YES
+  else
+       GhcLibsWithObjectIO=NO
+  fi
 ],
-[GhcLibsWithObjectIO=YES],
 [GhcLibsWithObjectIO=NO]
 )
 AC_SUBST(GhcLibsWithObjectIO)
 
-dnl ** Enable the building of the OpenGL/GLUT binding in hslibs?
+dnl ** Enable the building of the OpenAL binding?
 dnl --------------------------------------------------------------
-AC_ARG_ENABLE(hopengl,
-[  --enable-hopengl
-        Build HOpenGL, a Haskell binding for OpenGL/GLUT.
-        On Mac OS X, use --enable-hopengl=x11 to use X11 instead
-        of the "native" libraries.
-],
-[GhcLibsWithHOpenGL=YES],
-[GhcLibsWithHOpenGL=NO]
-)
-UseQuartzOpenGL=NO
-if test x"$TargetOS_CPP" = x"darwin"; then
-  if test x"$enable_hopengl" != x"x11"; then
-    AC_DEFINE([USE_QUARTZ_OPENGL], [1],
-              [Define to 1 if native OpenGL should be used on Mac OS X])
-    UseQuartzOpenGL=YES
-  fi
-fi
-
-AC_SUBST(GhcLibsWithHOpenGL)
+AC_ARG_ENABLE([openal],
+  AC_HELP_STRING([--enable-openal],
+                 [Build OpenAL binding [[default=autodetect]]]),
+  [ if test x"$enableval" = x"yes"; then
+       GhcLibsWithOpenAL=YES
+    else
+       GhcLibsWithOpenAL=NO
+    fi
+  ],
+  [GhcLibsWithOpenAL=yes])
+
+AC_SUBST([GhcLibsWithOpenAL])
 
 dnl ** .NET interop support?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(dotnet,
-[  --enable-dotnet
-        Build .NET interop layer.
-],
-[DotnetSupport=YES; AC_DEFINE([WANT_DOTNET_SUPPORT], [1], [Define to 1 if you want to include .NET interop support.])],
+[AC_HELP_STRING([--enable-dotnet],
+[Build .NET interop layer. [default=no]])],
+[ if test x"$enableval" = x"yes"; then
+       DotnetSupport=YES; AC_DEFINE([WANT_DOTNET_SUPPORT], [1], [Define to 1 if you want to include .NET interop support.])
+  else 
+       DotnetSupport=NO
+  fi],
 [DotnetSupport=NO]
 )
 AC_SUBST(DotnetSupport)
@@ -661,6 +735,16 @@ dnl --------------------------------------------------------------
 dnl * General configuration checks
 dnl --------------------------------------------------------------
 
+dnl ** Can the unix package be built?
+dnl --------------------------------------------------------------
+
+if test x"$TargetPlatform" = x"i386-unknown-mingw32"; then
+   GhcLibsWithUnix=NO
+else
+   GhcLibsWithUnix=YES
+fi
+AC_SUBST([GhcLibsWithUnix])
+
 dnl ** does #! work?
 AC_SYS_INTERPRETER()
 
@@ -725,7 +809,8 @@ dnl If you can run configure, you certainly have /bin/sh
 AC_DEFINE([HAVE_BIN_SH], [1], [Define to 1 if you have /bin/sh.])
 
 dnl ** how to invoke `ar' and `ranlib'
-FPTOOLS_PROG_AR_AND_RANLIB
+FP_PROG_AR_NEEDS_RANLIB
+FP_PROG_AR_SUPPORTS_INPUT
 
 dnl ** Check to see whether ln -s works
 AC_PROG_LN_S
@@ -756,7 +841,12 @@ case $Catalog in
    glafp*) 
        case $HostOS_CPP in
           mingw32)
-             Catalog=`cygpath -w $hardtop/$Catalog`
+                 if test "${OSTYPE}" == "msys"
+                   then
+                     Catalog=$hardtop/$Catalog
+                   else
+                     Catalog=`cygpath -w $hardtop/$Catalog`
+                 fi
              ;;
           *) Catalog=$hardtop/$Catalog
              ;;
@@ -778,9 +868,8 @@ else
 fi
 
 AC_ARG_WITH(greencard,
-[  --with-greencard=<greencard compiler>
-        Use a command different from 'greencard' to compile GreenCard files
-],
+[AC_HELP_STRING([--with-greencard=ARG],
+        [Use ARG as the path to greencard  [default=autodetct]])],
 [
 GreenCardCmd=$withval;
 FPTOOLS_GREENCARD(3.00)
@@ -788,10 +877,15 @@ FPTOOLS_GREENCARD(3.00)
 )
 
 AC_ARG_ENABLE(src-tree-happy,
-[  --enable-src-tree-happy
-        Build and use source tree (fptools/happy) version of Happy.
+[AC_HELP_STRING([--enable-src-tree-happy],
+       [Build and use source tree (fptools/happy) version of Happy. 
+        [default=autodetect]])],
+[ if test x"$enableval" = x"yes"; then
+       UseSrcTreeHappy=YES
+  else
+       UseSrcTreeHappy=NO
+  fi
 ],
-[UseSrcTreeHappy=YES],
 [UseSrcTreeHappy=NO]
 )
 dnl ** check for installed happy binary + version
@@ -801,20 +895,30 @@ FPTOOLS_HAPPY
 fi;
 
 AC_ARG_ENABLE(src-tree-haddock,
-[  --enable-src-tree-haddock
-        Build and use source tree (fptools/haddock) version of Haddock.
+[AC_HELP_STRING([--enable-src-tree-haddock],
+        [Build and use source tree (fptools/haddock) version of Haddock.
+        [default=autodetect]])],
+[ if test x"$enableval" = x"yes"; then
+       UseSrcTreeHaddock=YES
+  else
+       UseSrcTreeHaddock=NO
+  fi
 ],
-[UseSrcTreeHaddock=YES],
 [UseSrcTreeHaddock=NO]
 )
 dnl ** check for installed haddock
 FPTOOLS_HADDOCK
 
 AC_ARG_ENABLE(src-tree-alex,
-[  --enable-src-tree-alex
-        Build and use source tree (fptools/alex) version of Alex.
+[AC_HELP_STRING([--enable-src-tree-alex],
+        [Build and use source tree (fptools/alex) version of Alex.
+        [default=autodetect]])],
+[ if test x"$enableval" = x"yes"; then
+       UseSrcTreeAlex=YES
+  else
+       UseSrcTreeAlex=NO
+  fi
 ],
-[UseSrcTreeAlex=YES],
 [UseSrcTreeAlex=NO]
 )
 dnl ** check for installed alex binary + version
@@ -860,13 +964,30 @@ AC_CHECK_HEADERS(dos.h conio.h io.h std.h)
 dnl ** check for Windows include files
 AC_CHECK_HEADERS(windows.h)
 
+dnl ** check for OpenGL/GLUT include paths and libraries
+FP_CHECK_GLUT
+
+if test x"$no_GLU" = xyes; then
+  GhcLibsWithOpenGL=NO
+else
+  GhcLibsWithOpenGL=YES
+fi
+AC_SUBST([GhcLibsWithOpenGL])
+
+if test x"$no_GLUT" = xyes; then
+  GhcLibsWithGLUT=NO
+else
+  GhcLibsWithGLUT=YES
+fi
+AC_SUBST([GhcLibsWithGLUT])
+
 dnl ** check for OpenGL include files
 fp_save_cppflags="$CPPFLAGS"
 CPPFLAGS="$CPPFLAGS $X_CFLAGS"
-if test $UseQuartzOpenGL = YES ; then
-  AC_CHECK_HEADERS(OpenGL/gl.h)
+if test x"$use_quartz_opengl" = xyes; then
+  AC_CHECK_HEADERS([OpenGL/gl.h])
 else
-  AC_CHECK_HEADERS(GL/gl.h)
+  AC_CHECK_HEADERS([GL/gl.h])
 fi
 CPPFLAGS="$fp_save_cppflags"
 
@@ -989,7 +1110,7 @@ FPTOOLS_CHECK_HTYPE(rlim_t)
 FPTOOLS_CHECK_HTYPE(wint_t)
 
 dnl ** Map OpenGL data types to Haskell types
-if test $GhcLibsWithHOpenGL = YES ; then
+if test $GhcLibsWithOpenGL = YES ; then
 FPTOOLS_CHECK_HTYPE(GLboolean)
 FPTOOLS_CHECK_HTYPE(GLbyte)
 FPTOOLS_CHECK_HTYPE(GLubyte)
@@ -1012,41 +1133,11 @@ FP_CHECK_CONSTS([E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EADV EAFNOSUPPORT EAGAIN
 dnl ** can we open files in binary mode?
 FP_CHECK_CONST([O_BINARY], [#include <fcntl.h>], [0])
 
-dnl ** check for GetModuleFileName and WinExec (windows only)
-dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
-dnl Doesn't work because the linker can't see the functions if
-dnl you omit the #include <windows.h>.  (I've no idea why not...)
+FP_CHECK_FUNC([WinExec],
+  [@%:@include <windows.h>], [WinExec("",0)])
 
-FPTOOLS_TRY_LINK_NOWARN(,[
-#if HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-main() { 
-  WinExec("",0);
-  exit(0);
-}
-],
-[have_winexec=1],
-[have_winexec=0])
-if test "$have_winexec" = "1"; then
-  AC_DEFINE([HAVE_WINEXEC], [1], [Define to 1 if you have the WinExec function.])
-fi
-
-FPTOOLS_TRY_LINK_NOWARN(,[
-#if HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-main() { 
-  char* dir;
-  GetModuleFileName((HMODULE)0,dir,0);
-  exit(0);
-}
-],
-[have_getmodulefilename=1],
-[have_getmodulefilename=0])
-if test "$have_getmodulefilename" = "1"; then
-AC_DEFINE([HAVE_GETMODULEFILENAME], [1], [Define to 1 if you have the GetModuleFileName function.])
-fi
+FP_CHECK_FUNC([GetModuleFileName],
+  [@%:@include <windows.h>], [GetModuleFileName((HMODULE)0,(LPTSTR)0,0)])
 
 dnl ** check return type of signal handlers
 dnl Foo: assumes we can use prototypes.
@@ -1179,27 +1270,18 @@ else
 fi
 
 dnl ** check for math library
-FPTOOLS_CHECK_LIBM()
-AC_SUBST(LIBM)
+AC_CHECK_LIB([m], [atan], [LIBS="-lm $LIBS"; LIBM="-lm"], [LIBM=])
+AC_SUBST([LIBM])
 
 dnl ** check for X Window System
 AC_PATH_XTRA()
 
-dnl ** check for OpenGL/GLUT/GLX include paths and libraries
-if test $GhcLibsWithHOpenGL = YES ; then
-  if test $UseQuartzOpenGL = YES ; then
-    dnl Take a shortcut for Mac OS X native OpenGL:
-    dnl It's in a non-standard location, but it's always there
-    GL_CFLAGS=
-       GL_LIBS=
-       GLUT_LIBS=
-       AC_SUBST(GL_CFLAGS)
-       AC_SUBST(GL_LIBS)
-       AC_SUBST(GLUT_LIBS)
-  else
-    FPTOOLS_HAVE_OPENGL
-  fi
+if test "$no_x" = yes; then
+  GhcLibsWithX11=NO
+else
+  GhcLibsWithX11=YES
 fi
+AC_SUBST([GhcLibsWithX11])
 
 dnl ################################################################
 dnl Check for libraries
@@ -1306,8 +1388,6 @@ else
     AC_SUBST(HaveRtldNow)
 fi
 
-FPTOOLS_CHECK_LIB_NOWARN(m, atan)
-
 dnl ---------- usleep ----------
 dnl --- stolen from guile configure ---
 dnl --- FIXME: /usr/include/unistd.h can't be right?
@@ -1353,25 +1433,15 @@ dnl --------------------------------------------------
 dnl * test for GTK+
 dnl --------------------------------------------------
 
-AC_PATH_PROGS(GTK_CONFIG, gtk-config gtk12-config)
-if test "$GTK_CONFIG" != ""; then
-   AC_CACHE_CHECK([for version of GTK+], fptools_cv_gtk_version, [
-       fptools_cv_gtk_version=`$GTK_CONFIG --version`
-    ])
-    GTK_VERSION=$fptools_cv_gtk_version
-else
-    GTK_VERSION=
+AC_PATH_PROGS([GTK_CONFIG], [gtk-config gtk12-config])
+if test -n "$GTK_CONFIG"; then
+  AC_CACHE_CHECK([for version of GTK+], [fp_cv_gtk_version],
+    [fp_cv_gtk_version=`$GTK_CONFIG --version`])
+  FP_COMPARE_VERSIONS([$fp_cv_gtk_version], [-lt], [1.2],
+    [AC_MSG_WARN([GTK+ not usable, need at least version 1.2])
+     GTK_CONFIG=])
 fi
-
-case $fptools_cv_gtk_version in
-  1.[[23]].*) ;;
-  *) AC_MSG_WARN([GTK+ not usable; need at least version 1.2])
-     GTK_CONFIG=
-     ;;
-esac
-
-AC_SUBST(GTK_CONFIG)
-AC_SUBST(GTK_VERSION)
+AC_SUBST([GTK_CONFIG])
 
 dnl --------------------------------------------------
 dnl * Miscellaneous feature tests
@@ -1395,7 +1465,13 @@ FPTOOLS_UNDERSCORE
 dnl ** check for ld, and whether ld has -x option
 AC_PATH_PROG(LdCmdRaw, ld)
 case $HostOS_CPP in
- mingw32) LdCmd=`cygpath -w ${LdCmdRaw} | sed -e 's@\\\\@/@g' `
+ mingw32) 
+        if test "${OSTYPE}" == "msys"
+          then
+             LdCmd=${LdCmdRaw}
+          else
+             LdCmd=`cygpath -w ${LdCmdRaw} | sed -e 's@\\\\@/@g' `
+       fi
           ;;
  *) LdCmd=${LdCmdRaw}
     ;;