]> git.saurik.com Git - wxWidgets.git/blobdiff - configure.in
fix missing int return type
[wxWidgets.git] / configure.in
index 0616e8e9d8cc75d0546f0dbddd8d3a8639f975df..612034e20c766655531e277c01b0a42c784c4c50 100644 (file)
@@ -17,7 +17,7 @@ dnl ---------------------------------------------------------------------------
 dnl initialization
 dnl ---------------------------------------------------------------------------
 
-AC_INIT([wxWidgets], [2.7.1], [wx-dev@lists.wxwidgets.org])
+AC_INIT([wxWidgets], [2.8.0], [wx-dev@lists.wxwidgets.org])
 
 dnl the file passed to AC_CONFIG_SRCDIR should be specific to our package
 AC_CONFIG_SRCDIR([wx-config.in])
@@ -33,8 +33,8 @@ dnl
 dnl wx_release_number += 1
 
 wx_major_version_number=2
-wx_minor_version_number=7
-wx_release_number=2
+wx_minor_version_number=8
+wx_release_number=0
 wx_subrelease_number=0
 
 WX_RELEASE=$wx_major_version_number.$wx_minor_version_number
@@ -1444,12 +1444,6 @@ dnl is -traditional needed for correct compilations
 dnl   adds -traditional for gcc if needed
 AC_PROG_GCC_TRADITIONAL
 
-dnl do all checks from now on using the C++ compiler: this saves us a lot of
-dnl problems with various functions which may be available in libc but not
-dnl declared in the header and various pointer conversions which compile with
-dnl the C compiler but not in C++
-AC_LANG_PUSH(C++)
-
 dnl C++-compiler checks
 dnl   defines CXX with the compiler to use
 dnl   defines GXX with yes if using gxx
@@ -1525,7 +1519,7 @@ dnl does make support "-include" (only GNU make does AFAIK)?
 AC_CACHE_CHECK([if make is GNU make], wx_cv_prog_makeisgnu,
 [
     if ( ${SHELL-sh} -c "${MAKE-make} --version" 2> /dev/null |
-            egrep -s GNU > /dev/null); then
+            $EGREP -s GNU > /dev/null); then
         wx_cv_prog_makeisgnu="yes"
     else
         wx_cv_prog_makeisgnu="no"
@@ -1715,7 +1709,6 @@ case "${host}" in
       dnl not "g++/c++".
       dnl ---------------------------------------------------------------------
       dnl (OS/2-only piece)
-      AC_LANG_PUSH(C)
       if test "$wxUSE_MOTIF" = 1 -o "$wxUSE_GTK" = 1 -o "$wxUSE_X11" = 1; then
           dnl More complete Unix emulation for unix-like ports
           dnl by linking in POSIX/2's cExt (if available).
@@ -1759,7 +1752,6 @@ case "${host}" in
               wx_cv_gccversion="EMX2"
           )
       ])
-      AC_LANG_POP
       if test "$wx_cv_gccversion" = "EMX2"; then
           LIBS="$LIBS -lstdcpp"
           LDFLAGS="$LDFLAGS -Zsysv-signals"
@@ -1828,27 +1820,13 @@ dnl ------------------------------------------------------------------------
 dnl Check for headers
 dnl ------------------------------------------------------------------------
 
-dnl defines HAVE_STDLIB_H
-AC_CHECK_HEADERS(stdlib.h)
-dnl defines HAVE_MALLOC_H
-AC_CHECK_HEADERS(malloc.h)
-dnl defines HAVE_UNISTD_H
-AC_CHECK_HEADERS(unistd.h)
-dnl defines HAVE_WCHAR_H
-AC_CHECK_HEADERS(wchar.h)
+AC_CHECK_HEADERS(stdlib.h fnmatch.h langinfo.h malloc.h unistd.h wchar.h)
 
 dnl maybe wchar_t is in wcstr.h if we don't have wchar.h?
 if test "$ac_cv_header_wchar_h" != "yes"; then
-    dnl defines HAVE_WCSTR_H
     AC_CHECK_HEADERS(wcstr.h)
 fi
 
-dnl defines HAVE_FNMATCH_H
-AC_CHECK_HEADERS(fnmatch.h)
-
-dnl defines HAVE_LANGINFO_H (GNU libc locale parameters)
-AC_CHECK_HEADERS(langinfo.h)
-
 case "${host}" in
   *-pc-os2_emx | *-pc-os2-emx )
       dnl Explicitly link -lintl if langinfo.h is available
@@ -1996,6 +1974,9 @@ AC_CACHE_CHECK(
     [whether the compiler supports variadic macros],
     [wx_cv_have_variadic_macros],
     [
+        dnl C compiler might support variadic macros when C++ one doesn't
+        dnl (happens with gcc/g++ 2.95.4), so must use C++ one explicitly
+        AC_LANG_PUSH(C++)
         AC_COMPILE_IFELSE(
             AC_LANG_PROGRAM(
                 [
@@ -2009,6 +1990,7 @@ AC_CACHE_CHECK(
             [wx_cv_have_variadic_macros=yes],
             [wx_cv_have_variadic_macros=no]
             )
+        AC_LANG_POP()
     ]
 )
 
@@ -2039,6 +2021,7 @@ if test "x$wx_largefile" = "xyes"; then
                 [if -D__STDC_EXT__ is required],
                 wx_cv_STDC_EXT_required,
                 [
+                    AC_LANG_PUSH(C++)
                     AC_TRY_COMPILE(
                         [],
                         [
@@ -2049,6 +2032,7 @@ if test "x$wx_largefile" = "xyes"; then
                         wx_cv_STDC_EXT_required=no,
                         wx_cv_STDC_EXT_required=yes
                     )
+                    AC_LANG_POP()
                 ]
             )
             if test "x$wx_cv_STDC_EXT_required" = "xyes"; then
@@ -2138,6 +2122,10 @@ if test "x$COMPAQCXX" = "xyes"; then
     CXXFLAGS="-w0 -msg_disable basclsnondto,unrimpret,intconlosbit"
 fi
 
+dnl the next few tests are all for C++ features and so need to be done using
+dnl C++ compiler
+AC_LANG_PUSH(C++)
+
 dnl check for std::string or std::wstring
 if test "$wxUSE_STD_STRING" = "yes" -o "$wxUSE_STL" = "yes"; then
     if test "$wxUSE_UNICODE" = "yes"; then
@@ -2148,42 +2136,60 @@ if test "$wxUSE_STD_STRING" = "yes" -o "$wxUSE_STL" = "yes"; then
         char_type="char"
     fi
 
-    dnl check if <string> declares std::wstring
-    AC_MSG_CHECKING([for $std_string in <string>])
-    AC_TRY_COMPILE([#include <string>],
-                   [$std_string foo;],
-                   [AC_MSG_RESULT(yes)
-                    AC_DEFINE(HAVE_STD_WSTRING)],
-                   [AC_MSG_RESULT(no)
-                    AC_MSG_CHECKING([if std::basic_string<$char_type> works])
-                    AC_TRY_COMPILE([
-                        #ifdef HAVE_WCHAR_H
-                        #  ifdef __CYGWIN__
-                        #    include <stddef.h>
-                        #  endif
-                        #  include <wchar.h>
-                        #endif
-                        #ifdef HAVE_STDLIB_H
-                        #  include <stdlib.h>
-                        #endif
-                        #include <stdio.h>
-                        #include <string>
-                        ],
-                        [std::basic_string<$char_type> foo;
-                         const $char_type* dummy = foo.c_str();],
-                        [AC_MSG_RESULT(yes)],
-                        [AC_MSG_RESULT([no])
-                         if test "$wxUSE_STL" = "yes"; then
-                             AC_MSG_ERROR([Can't use --enable-stl without $std_string or std::basic_string<$char_type>])
-                         elif grep wxUSE_STD_STRING $wx_arg_cache_file >/dev/null; then
-                             AC_MSG_ERROR([Can't use --enable-std_string without $std_string or std::basic_string<$char_type>])
-                         else
-                             AC_MSG_WARN([No $std_string or std::basic_string<$char_type>, switching to --disable-std_string])
-                             wxUSE_STD_STRING=no
-                         fi
-                        ]
-                    )
-                    ])
+    dnl check if <string> declares std::[w]string
+    AC_CACHE_CHECK([for $std_string in <string>],
+        wx_cv_class_stdstring,
+        [
+            AC_TRY_COMPILE([#include <string>],
+                [$std_string foo;],
+                wx_cv_class_stdstring=yes,
+                wx_cv_class_stdstring=no
+            )
+        ]
+    )
+
+    if test "$wx_cv_class_stdstring" = yes; then
+        if test "$wxUSE_UNICODE" = "yes"; then
+            AC_DEFINE(HAVE_STD_WSTRING)
+        fi
+        dnl we don't need HAVE_STD_STRING, we just suppose it's available if
+        dnl wxUSE_STD_STRING==yes
+    else
+        AC_CACHE_CHECK([if std::basic_string<$char_type> works],
+            wx_cv_class_stdbasicstring,
+            [
+                AC_TRY_COMPILE([
+                    #ifdef HAVE_WCHAR_H
+                    #  ifdef __CYGWIN__
+                    #    include <stddef.h>
+                    #  endif
+                    #  include <wchar.h>
+                    #endif
+                    #ifdef HAVE_STDLIB_H
+                    #  include <stdlib.h>
+                    #endif
+                    #include <stdio.h>
+                    #include <string>
+                    ],
+                    [std::basic_string<$char_type> foo;
+                     const $char_type* dummy = foo.c_str();],
+                    wx_cv_class_stdbasicstring=yes,
+                    wx_cv_class_stdbasicstring=no
+                )
+            ]
+        )
+
+        if test "$wx_cv_class_stdbasicstring" != yes; then
+            if test "$wxUSE_STL" = "yes"; then
+                AC_MSG_ERROR([Can't use --enable-stl without $std_string or std::basic_string<$char_type>])
+            elif grep wxUSE_STD_STRING $wx_arg_cache_file >/dev/null; then
+                AC_MSG_ERROR([Can't use --enable-std_string without $std_string or std::basic_string<$char_type>])
+            else
+                AC_MSG_WARN([No $std_string or std::basic_string<$char_type>, switching to --disable-std_string])
+                wxUSE_STD_STRING=no
+            fi
+        fi
+    fi
 fi
 
 if test "$wxUSE_STD_IOSTREAM" = "yes"; then
@@ -2202,61 +2208,88 @@ fi
 
 if test "$wxUSE_STL" = "yes"; then
     dnl check for basic STL functionality
-    AC_MSG_CHECKING([for basic STL functionality])
-    AC_TRY_COMPILE([#include <string>
-                    #include <functional>
-                    #include <algorithm>
-                    #include <vector>
-                    #include <list>],
-                    [std::vector<int> moo;
-                     std::list<int> foo;
-                     std::vector<int>::iterator it =
-                         std::find_if(moo.begin(), moo.end(),
-                                      std::bind2nd(std::less<int>(), 3));],
-                    [AC_MSG_RESULT([yes])],
-                    [AC_MSG_RESULT([no])
-                     AC_MSG_ERROR([Basic STL functionality missing])])
+    AC_CACHE_CHECK([for basic STL functionality],
+        wx_cv_lib_stl,
+        [AC_TRY_COMPILE([#include <string>
+            #include <functional>
+            #include <algorithm>
+            #include <vector>
+            #include <list>],
+            [std::vector<int> moo;
+             std::list<int> foo;
+             std::vector<int>::iterator it =
+                 std::find_if(moo.begin(), moo.end(),
+                              std::bind2nd(std::less<int>(), 3));],
+            wx_cv_lib_stl=yes,
+            wx_cv_lib_stl=no
+        )]
+    )
+
+    if test "$wx_cv_lib_stl" != yes; then
+         AC_MSG_ERROR([Can't use --enable-stl as basic STL functionality is missing])
+    fi
 
     dnl check for compliant std::string::compare
-    AC_MSG_CHECKING([for compliant std::string::compare])
-    AC_TRY_COMPILE([#include <string>],
-                   [std::string foo, bar;
-                    foo.compare(bar);
-                    foo.compare(1, 1, bar);
-                    foo.compare(1, 1, bar, 1, 1);
-                    foo.compare("");
-                    foo.compare(1, 1, "");
-                    foo.compare(1, 1, "", 2);],
-                   [AC_MSG_RESULT(yes)
-                    AC_DEFINE(HAVE_STD_STRING_COMPARE)],
-                   [AC_MSG_RESULT(no)])
+    AC_CACHE_CHECK([for compliant std::string::compare],
+        wx_cv_func_stdstring_compare,
+        [AC_TRY_COMPILE([#include <string>],
+            [std::string foo, bar;
+            foo.compare(bar);
+            foo.compare(1, 1, bar);
+            foo.compare(1, 1, bar, 1, 1);
+            foo.compare("");
+            foo.compare(1, 1, "");
+            foo.compare(1, 1, "", 2);],
+            wx_cv_func_stdstring_compare=yes,
+            wx_cv_func_stdstring_compare=no
+        )]
+    )
+
+    if test "$wx_cv_func_stdstring_compare" = yes; then
+        AC_DEFINE(HAVE_STD_STRING_COMPARE)
+    fi
 
     dnl check for hash_map and hash_set headers
     AC_CHECK_HEADER([hash_map],
-                    [AC_MSG_CHECKING([for hash_map and hash_set])
-                     AC_TRY_COMPILE([#include <hash_map>
-                                     #include <hash_set>],
-                                    [std::hash_map<double*, char*, std::hash<double*>, std::equal_to<double*> > test1;
-                                     std::hash_set<char*, std::hash<char*>, std::equal_to<char*> > test2;],
-                                    [AC_MSG_RESULT(yes)
-                                     AC_DEFINE(HAVE_HASH_MAP)
-                                     AC_DEFINE(HAVE_STD_HASH_MAP)],
-                                    [AC_MSG_RESULT(no)])
-                     ])
+        [AC_CACHE_CHECK([for standard hash_map and hash_set],
+            wx_cv_class_stdhashmapset,
+            [AC_TRY_COMPILE([#include <hash_map>
+                #include <hash_set>],
+                [std::hash_map<double*, char*, std::hash<double*>, std::equal_to<double*> > test1;
+                 std::hash_set<char*, std::hash<char*>, std::equal_to<char*> > test2;],
+                wx_cv_class_stdhashmapset=yes,
+                wx_cv_class_stdhashmapset=no)
+            ]
+        )]
+    )
+
+    if test "$wx_cv_class_stdhashmapset" = yes; then
+        AC_DEFINE(HAVE_HASH_MAP)
+        AC_DEFINE(HAVE_STD_HASH_MAP)
+    fi
 
     AC_CHECK_HEADER([ext/hash_map],
-                    [AC_MSG_CHECKING([for hash_map and hash_set])
-                     AC_TRY_COMPILE([#include <ext/hash_map>
-                                     #include <ext/hash_set>],
-                                    [__gnu_cxx::hash_map<double*, char*, __gnu_cxx::hash<double*>, std::equal_to<double*> > test1;
-                                     __gnu_cxx::hash_set<char*, __gnu_cxx::hash<char*>, std::equal_to<char*> > test2;],
-                                    [AC_MSG_RESULT(yes)
-                                     AC_DEFINE(HAVE_EXT_HASH_MAP)
-                                     AC_DEFINE(HAVE_GNU_CXX_HASH_MAP)],
-                                    [AC_MSG_RESULT(no)])
-                     ])
+        [AC_CACHE_CHECK([for GNU hash_map and hash_set],
+            wx_cv_class_gnuhashmapset,
+            [AC_TRY_COMPILE([#include <ext/hash_map>
+                #include <ext/hash_set>],
+                [__gnu_cxx::hash_map<double*, char*, __gnu_cxx::hash<double*>, std::equal_to<double*> > test1;
+                 __gnu_cxx::hash_set<char*, __gnu_cxx::hash<char*>, std::equal_to<char*> > test2;],
+                wx_cv_class_gnuhashmapset=yes,
+                wx_cv_class_gnuhashmapset=no)
+            ]
+        )]
+    )
+
+    if test "$wx_cv_class_gnuhashmapset" = yes; then
+         AC_DEFINE(HAVE_EXT_HASH_MAP)
+         AC_DEFINE(HAVE_GNU_CXX_HASH_MAP)
+    fi
 fi
 
+dnl pop C++
+AC_LANG_POP()
+
 dnl ---------------------------------------------------------------------------
 dnl Define search path for includes and libraries: all headers and libs will be
 dnl looked for in all directories of this path
@@ -2495,9 +2528,9 @@ fi
 dnl check for C99 string to long long conversion functions, assume that if we
 dnl have the unsigned variants, then we have the signed ones as well
 if test "wxUSE_UNICODE" = "yes"; then
-    AC_CHECK_FUNCS(wcstoull)
+    WX_CHECK_FUNCS(wcstoull)
 else
-    AC_CHECK_FUNCS(strtoull)
+    WX_CHECK_FUNCS(strtoull)
 fi
 
 dnl ---------------------------------------------------------------------------
@@ -2819,10 +2852,12 @@ if test "$wxUSE_EXPAT" != "no"; then
             AC_CACHE_CHECK([if expat.h is valid C++ header],
                 wx_cv_expat_is_not_broken,
                 [
+                AC_LANG_PUSH(C++)
                 AC_TRY_COMPILE([#include <expat.h>],[],
                     wx_cv_expat_is_not_broken=yes,
                     wx_cv_expat_is_not_broken=no
                 )
+                AC_LANG_POP()
                 ]
             )
             if test "$wx_cv_expat_is_not_broken" = "yes" ; then
@@ -2972,8 +3007,6 @@ if test "$wxUSE_GUI" = "yes"; then
 
     if test "$wxUSE_GTK" = 1; then
         dnl GTK+ test program must be compiled with C compiler
-        AC_LANG_PUSH(C)
-
         AC_MSG_CHECKING([for GTK+ version])
 
         gtk_version_cached=1
@@ -3137,8 +3170,6 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             AC_CHECK_LIB(gdk, gdk_im_open, AC_DEFINE(HAVE_XIM))
         fi
 
-        AC_LANG_POP
-
         dnl we need poll() in src/gtk/app.cpp (we know that Darwin doesn't
         dnl have it but we do the check for the others)
         if test "$USE_DARWIN" != 1; then
@@ -3251,7 +3282,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
        PKG_PROG_PKG_CONFIG()
 
        PKG_CHECK_MODULES(DIRECTFB,
-                         [directfb >= 0.9.22],
+                         [directfb >= 0.9.23],
                          [
                            wxUSE_UNIVERSAL="yes"
                            TOOLKIT_INCLUDE="$DIRECTFB_CFLAGS"
@@ -3330,6 +3361,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
 
             PKG_CHECK_MODULES(PANGOX, pangox,
                 [
+                    CFLAGS="$PANGOX_CFLAGS $CFLAGS"
                     CXXFLAGS="$PANGOX_CFLAGS $CXXFLAGS"
                     GUI_TK_LIBRARY="$GUI_TK_LIBRARY $PANGOX_LIBS"
                 ],
@@ -3339,6 +3371,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             )
             PKG_CHECK_MODULES(PANGOFT2, pangoft2,
                 [
+                    CFLAGS="$PANGOFT2_CFLAGS $CFLAGS"
                     CXXFLAGS="$PANGOFT2_CFLAGS $CXXFLAGS"
                     GUI_TK_LIBRARY="$GUI_TK_LIBRARY $PANGOFT2_LIBS"
                 ],
@@ -3350,6 +3383,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             PKG_CHECK_MODULES(PANGOXFT, pangoxft,
                 [
                     AC_DEFINE(HAVE_PANGO_XFT)
+                    CFLAGS="$PANGOXFT_CFLAGS $CFLAGS"
                     CXXFLAGS="$PANGOXFT_CFLAGS $CXXFLAGS"
                     GUI_TK_LIBRARY="$GUI_TK_LIBRARY $PANGOXFT_LIBS"
                 ],
@@ -3357,12 +3391,9 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                     AC_MSG_WARN([pangoxft library not found, library will be compiled without anti-aliasing support])
                 ]
             )
-            save_CXXFLAGS="$CXXFLAGS"
             save_LIBS="$LIBS"
-            CXXFLAGS="$PANGOX_CFLAGS $CXXFLAGS"
             LIBS="$LIBS $PANGOX_LIBS"
             AC_CHECK_FUNCS([pango_font_family_is_monospace])
-            CXXFLAGS="$save_CXXFLAGS"
             LIBS="$save_LIBS"
         fi
 
@@ -3392,8 +3423,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             WX_INCLUDE_PATH_EXIST($ac_find_includes, $TOOLKIT_INCLUDE)
             TOOLKIT_INCLUDE="$TOOLKIT_INCLUDE$ac_path_to_include"
         else
-            save_CXXFLAGS=$CXXFLAGS
-            CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+            save_CFLAGS=$CFLAGS
+            CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
 
             AC_TRY_COMPILE(
                 [
@@ -3413,7 +3444,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                 ]
             )
 
-            CXXFLAGS=$save_CXXFLAGS
+            CFLAGS=$save_CFLAGS
         fi
 
 
@@ -3429,8 +3460,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             dnl it might happen that we found headers in one of the standard
             dnl paths but the libs are elsewhere but still in default (linker)
             dnl path -- try to compile a test program to check for this
-            save_CXXFLAGS=$CXXFLAGS
-            CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+            save_CFLAGS=$CFLAGS
+            CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
             save_LIBS="$LIBS"
             LIBS="$GUI_TK_LIBRARY -lXm -lXmu -lXext -lX11"
 
@@ -3452,7 +3483,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                 ]
             )
 
-            CXXFLAGS=$save_CXXFLAGS
+            CFLAGS=$save_CFLAGS
             LIBS="$save_LIBS"
         fi
 
@@ -3466,8 +3497,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                     if test "$libs_found" = "0"; then
                         save_LIBS="$LIBS"
                         LIBS="$GUI_TK_LIBRARY -lXm ${libp} -lXmu -lXext -lXt${libsm_ice} -lX11"
-                        save_CXXFLAGS=$CXXFLAGS
-                        CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+                        save_CFLAGS=$CFLAGS
+                        CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
 
                         AC_TRY_LINK(
                             [
@@ -3490,7 +3521,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                         )
 
                         LIBS="$save_LIBS"
-                        CXXFLAGS=$save_CXXFLAGS
+                        CFLAGS=$save_CFLAGS
                     fi
                 done
             fi
@@ -3505,8 +3536,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
         dnl elsewhere
         AC_CHECK_LIB(Sgm, [SgCreateList], [libsgm_link=" -lSgm"])
 
-        save_CXXFLAGS=$CXXFLAGS
-        CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+        save_CFLAGS=$CFLAGS
+        CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
 
         AC_CACHE_CHECK([for Motif 2],
             wx_cv_lib_motif2,
@@ -3545,7 +3576,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
             AC_DEFINE(__WXLESSTIF__,0)
         fi
 
-        CXXFLAGS=$save_CXXFLAGS
+        CFLAGS=$save_CFLAGS
 
         GUI_TK_LIBRARY="$GUI_TK_LIBRARY${libsgm_link} -lXm${libp_link} -lXmu -lXext -lXt${libsm_ice_link} -lX11"
         TOOLKIT=MOTIF
@@ -3566,8 +3597,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                 AC_CACHE_CHECK([for X11/xpm.h],
                     wx_cv_x11_xpm_h,
                     [
-                        save_CXXFLAGS=$CXXFLAGS
-                        CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+                        save_CFLAGS=$CFLAGS
+                        CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
 
                         AC_TRY_COMPILE(
                             [
@@ -3581,7 +3612,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                             wx_cv_x11_xpm_h=no
                         )
 
-                        CXXFLAGS=$save_CXXFLAGS
+                        CFLAGS=$save_CFLAGS
                     ]
                 )
 
@@ -3604,8 +3635,8 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                      [], [$GUI_TK_LIBRARY -lX11])
 
         if test "$wxHAVE_XEXT_LIB" = 1; then
-            save_CXXFLAGS="$CXXFLAGS"
-            CXXFLAGS="$TOOLKIT_INCLUDE $CXXFLAGS"
+            save_CFLAGS="$CFLAGS"
+            CFLAGS="$TOOLKIT_INCLUDE $CFLAGS"
 
             AC_MSG_CHECKING([for X11/extensions/shape.h])
             AC_TRY_COMPILE([
@@ -3624,7 +3655,7 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                            [
                             AC_MSG_RESULT([not found])
                            ])
-            CXXFLAGS="$save_CXXFLAGS"
+            CFLAGS="$save_CFLAGS"
 
         fi
     fi
@@ -3870,7 +3901,10 @@ dnl ---------------------------------------------------------------------------
 
 USE_OPENGL=0
 if test "$wxUSE_OPENGL" = "yes"; then
-    if test "$wxUSE_MAC" = 1 -o "$wxUSE_COCOA" = "1"; then
+    if test "$wxUSE_MGL" = 1 -o "$wxUSE_DFB" = "1"; then
+        AC_MSG_WARN([wxGLCanvas not implemented for this port, library will be compiled without it.])
+        wxUSE_OPENGL="no"
+    elif test "$wxUSE_MAC" = 1 -o "$wxUSE_COCOA" = "1"; then
         OPENGL_LIBS="-framework OpenGL -framework AGL"
     elif test "$wxUSE_MSW" = 1; then
         OPENGL_LIBS="-lopengl32 -lglu32"
@@ -4211,6 +4245,7 @@ AC_CHECK_TYPES(ssize_t)
 
 dnl check what exactly size_t is on this machine - this is necessary to avoid
 dnl ambiguous overloads in several places, notably wx/string.h and wx/array.h
+AC_LANG_PUSH(C++) dnl tests below use overloaded functions and so need C++
 AC_CACHE_CHECK([if size_t is unsigned int],
     wx_cv_size_t_is_uint,
     [
@@ -4257,6 +4292,8 @@ else
     fi
 fi
 
+AC_LANG_POP() dnl C++
+
 dnl ---------------------------------------------------------------------------
 dnl Checks for structures
 dnl ---------------------------------------------------------------------------
@@ -4339,6 +4376,8 @@ dnl stupidly, provides a dummy function declaration inside its extension)
 dnl succeeds, even with C++ compiler, but the compilation of wxWidgets fails
 dnl
 dnl so we first check if the function is in the library
+dnl
+dnl FIXME: replace this mess with WX_CHECK_FUNCS()
 AC_CHECK_FUNCS(snprintf vsnprintf)
 
 if test "$ac_cv_func_vsnprintf" = "yes"; then
@@ -4540,8 +4579,21 @@ if test "$wxUSE_UNICODE" = yes; then
         fi
     fi
 
-    dnl also look if we have wide char IO functions
-    AC_CHECK_FUNCS(wputc wputchar putws fputws wprintf vswprintf)
+    dnl also look if we have wide char IO functions, notice that [f]putws are
+    dnl declared in special widec.h under Solaris
+    wchar_headers="#include <stdio.h>
+#include <wchar.h>"
+    case "${host}" in
+        *-*-solaris2* )
+            AC_CHECK_HEADERS(widec.h)
+            if test "$ac_cv_header_widec_h" = "yes"; then
+                wchar_headers="$wchar_headers
+#include <widec.h>"
+            fi
+    esac
+
+    WX_CHECK_FUNCS(wputc wputchar putws fputws wprintf vswprintf,,,
+                   [$wchar_headers])
 
     dnl MinGW has a vswprintf with a different prototype, and
     dnl a _vsnwprintf with the correct prototype, but AC_CHECK_FUNCS
@@ -4555,18 +4607,14 @@ if test "$wxUSE_UNICODE" = yes; then
 fi
 
 if test "x$ac_cv_header_fnmatch_h" = "xyes"; then
-    AC_CHECK_FUNCS(fnmatch)
+    WX_CHECK_FUNCS(fnmatch,,,[#include <fnmatch.h>])
 fi
 
 if test "$wxUSE_FILE" = "yes"; then
-    AC_CHECK_FUNCS(fsync)
-fi
-
-AC_CHECK_FUNCS(round)
-if test "$ac_cv_func_round" = yes; then
-    AC_CHECK_DECLS(round,,,[#include <math.h>])
+    WX_CHECK_FUNCS(fsync)
 fi
 
+WX_CHECK_FUNCS(round,,,[#include <math.h>])
 
 dnl the following tests are for Unix(like) systems only
 if test "$TOOLKIT" != "MSW"; then
@@ -4588,6 +4636,8 @@ if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
     if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes"; then
       AC_CACHE_CHECK([for sa_handler type], wx_cv_type_sa_handler,
       [
+        dnl C compiler happily compiles the code even if there is type mismatch
+        AC_LANG_PUSH(C++)
         AC_TRY_COMPILE([#include <signal.h>],
                      [
                         extern void testSigHandler(int);
@@ -4599,6 +4649,7 @@ if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
                      ], [
                         wx_cv_type_sa_handler=void
                      ])
+        AC_LANG_POP()
       ])
 
       AC_DEFINE_UNQUOTED(wxTYPE_SA_HANDLER, $wx_cv_type_sa_handler)
@@ -4609,6 +4660,7 @@ dnl backtrace() and backtrace_symbols() for wxStackWalker
 if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
     AC_CACHE_CHECK([for backtrace() in <execinfo.h>], wx_cv_func_backtrace,
         [
+            AC_LANG_PUSH(C++)
             AC_TRY_COMPILE([#include <execinfo.h>],
                 [
                     void *trace[1];
@@ -4620,6 +4672,7 @@ if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
                 wx_cv_func_backtrace=yes,
                 wx_cv_func_backtrace=no
             )
+            AC_LANG_POP()
         ]
     )
 
@@ -4630,6 +4683,7 @@ if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
     else
         AC_CACHE_CHECK([for __cxa_demangle() in <cxxabi.h>], wx_cv_func_cxa_demangle,
             [
+                AC_LANG_PUSH(C++)
                 AC_TRY_LINK([#include <cxxabi.h>],
                     [
                         int rc;
@@ -4638,6 +4692,7 @@ if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
                     wx_cv_func_cxa_demangle=yes,
                     wx_cv_func_cxa_demangle=no
                 )
+                AC_LANG_POP()
             ]
         )
 
@@ -4684,6 +4739,7 @@ AC_CACHE_CHECK(for statfs, wx_cv_func_statfs,
 if test "$wx_cv_func_statfs" = "yes"; then
     dnl check whether we have its dcelaration too: some systems (AIX 4) lack it
     AC_CACHE_CHECK(for statfs declaration, wx_cv_func_statfs_decl,
+        AC_LANG_PUSH(C++)
         AC_TRY_COMPILE(
             [
                  #if defined(__BSD__)
@@ -4700,6 +4756,7 @@ if test "$wx_cv_func_statfs" = "yes"; then
             wx_cv_func_statfs_decl=yes,
             wx_cv_func_statfs_decl=no
         )
+        AC_LANG_POP()
     )
 
     if test "$wx_cv_func_statfs_decl" = "yes"; then
@@ -4732,6 +4789,7 @@ else
         dnl for this check C++ compiler has to be used as passing incompatible
         dnl pointers is just a warning and not an error in C
         AC_CACHE_CHECK(for statvfs argument type, wx_cv_type_statvfs_t,
+            AC_LANG_PUSH(C++)
             AC_TRY_COMPILE(
                 [
                     #include <sys/statvfs.h>
@@ -4763,6 +4821,7 @@ else
                     )
                 ]
             )
+            AC_LANG_POP()
         )
 
         if test "$wx_cv_type_statvfs_t" != "unknown"; then
@@ -4824,9 +4883,8 @@ if test "$HAVE_SOME_SLEEP_FUNC" != 1; then
                     POSIX4_LINK=" -lposix4"
                 ],
                 [
-                    AC_CHECK_FUNCS(usleep,
-                        AC_DEFINE(HAVE_USLEEP),
-                        AC_MSG_WARN([wxSleep() function will not work])
+                    WX_CHECK_FUNCS(usleep,,
+                                    AC_MSG_WARN([wxSleep() function will not work])
                     )
                 ]
             )
@@ -4835,7 +4893,10 @@ if test "$HAVE_SOME_SLEEP_FUNC" != 1; then
 fi
 
 dnl check for uname (POSIX) and gethostname (BSD)
-AC_CHECK_FUNCS(uname gethostname, break)
+WX_CHECK_FUNCS(uname,,,[#include <sys/utsname.h>])
+if test "$wx_cv_func_uname" != yes; then
+    WX_CHECK_FUNCS(gethostname)  
+fi
 
 WX_CHECK_FUNCS(strtok_r, [], [], [#define _REENTRANT])
 
@@ -4924,14 +4985,14 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
 
     dnl the code below:
     dnl
-    dnl   defines THREADS_LINK and THREADS_CXXFLAGS which are the options
+    dnl   defines THREADS_LINK and THREADS_CFLAGS which are the options
     dnl   necessary to build the MT programs for the linker and compiler
     dnl   respectively
     dnl
     dnl   sets wxUSE_THREADS=1 if thread support is activated
 
     THREADS_LINK=
-    THREADS_CXXFLAGS=
+    THREADS_CFLAGS=
 
     if test "$wxUSE_THREADS" = "yes" ; then
         if test "$USE_BEOS" = 1; then
@@ -5022,7 +5083,7 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
 
                 -*)
                     AC_MSG_CHECKING([whether pthreads work with $flag])
-                    THREADS_CXXFLAGS="$flag"
+                    THREADS_CFLAGS="$flag"
                     ;;
 
                 *)
@@ -5032,16 +5093,16 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
               esac
 
               save_LIBS="$LIBS"
-              save_CXXFLAGS="$CXXFLAGS"
+              save_CFLAGS="$CFLAGS"
               LIBS="$THREADS_LINK $LIBS"
-              CXXFLAGS="$THREADS_CXXFLAGS $CXXFLAGS"
+              CFLAGS="$THREADS_CFLAGS $CFLAGS"
 
               AC_TRY_LINK([#include <pthread.h>],
                           [pthread_create(0,0,0,0);],
                           THREADS_OK=yes)
 
               LIBS="$save_LIBS"
-              CXXFLAGS="$save_CXXFLAGS"
+              CFLAGS="$save_CFLAGS"
 
               AC_MSG_RESULT($THREADS_OK)
               if test "x$THREADS_OK" = "xyes"; then
@@ -5049,7 +5110,7 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
               fi
 
               THREADS_LINK=""
-              THREADS_CXXFLAGS=""
+              THREADS_CFLAGS=""
       done
 
       if test "x$THREADS_OK" != "xyes"; then
@@ -5058,7 +5119,7 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
       else
           dnl yes, these special compiler flags should be used with the
           dnl linker as well
-          LDFLAGS="$THREADS_CXXFLAGS $LDFLAGS"
+          LDFLAGS="$THREADS_CFLAGS $LDFLAGS"
           LIBS="$THREADS_LINK $LIBS"
 
           AC_MSG_CHECKING([if more special flags are required for pthreads])
@@ -5090,11 +5151,11 @@ if test "$TOOLKIT" != "MSW" -a "$USE_OS2" != 1; then
           esac
           AC_MSG_RESULT(${flag})
           if test "x$flag" != xno; then
-              THREADS_CXXFLAGS="$THREADS_CXXFLAGS $flag"
+              THREADS_CFLAGS="$THREADS_CFLAGS $flag"
           fi
 
           dnl don't add these options to CPPFLAGS as cpp might not know them
-          WXCONFIG_CXXFLAGS="$WXCONFIG_CXXFLAGS $THREADS_CXXFLAGS"
+          WXCONFIG_CFLAGS="$WXCONFIG_CFLAGS $THREADS_CFLAGS"
       fi
     fi
 
@@ -5245,8 +5306,8 @@ else
             AC_CACHE_CHECK([if compiler supports -mthreads],
                 wx_cv_cflags_mthread,
                 [
-                    CXXFLAGS_OLD="$CXXFLAGS"
-                    CXXFLAGS="-mthreads $CXXFLAGS"
+                    CFLAGS_OLD="$CFLAGS"
+                    CFLAGS="-mthreads $CFLAGS"
                     AC_TRY_COMPILE([], [],
                         wx_cv_cflags_mthread=yes,
                         wx_cv_cflags_mthread=no
@@ -5256,16 +5317,15 @@ else
 
             if test "$wx_cv_cflags_mthread" = "yes"; then
                 dnl it does, use it
-                WXCONFIG_CXXFLAGS="$WXCONFIG_CXXFLAGS -mthreads"
+                WXCONFIG_CFLAGS="$WXCONFIG_CFLAGS -mthreads"
                 LDFLAGS="$LDFLAGS -mthreads"
             else
                 dnl it doesn't
-                CXXFLAGS="$CXXFLAGS_OLD"
+                CFLAGS="$CFLAGS_OLD"
             fi
         ;;
         *-pc-os2*emx )
             WXCONFIG_CFLAGS="$WXCONFIG_CFLAGS -Zmt -D__ST_MT_ERRNO__"
-            WXCONFIG_CXXFLAGS="$WXCONFIG_CXXFLAGS -Zmt -D__ST_MT_ERRNO__"
             LDFLAGS="$LDFLAGS -Zmt"
         ;;
       esac
@@ -5609,37 +5669,40 @@ fi
 dnl Unix implementation needs additional checks because audio support
 dnl comes in many favours:
 if test "$USE_UNIX" = "1" ; then
-    dnl it's not enough to check for just the header because OSS under NetBSD
-    dnl redefines ioctl as oss_ioctrl inside it and so we also need to test
-    dnl whether we need -lossaudio at link-time
-    AC_CACHE_CHECK([for SNDCTL_DSP_SPEED in sys/soundcard.h], ac_cv_header_sys_soundcard, [
-        AC_TRY_LINK([
-                #include <sys/ioctl.h>
-                #include <sys/soundcard.h>
-            ],
-            [
-                ioctl(0, SNDCTL_DSP_SPEED, 0);
-            ],
-            ac_cv_header_sys_soundcard=yes,
-            [
-                saveLibs="$LIBS"
-                LIBS="$saveLibs -lossaudio"
-                AC_TRY_LINK([
-                        #include <sys/ioctl.h>
-                        #include <sys/soundcard.h>
-                    ],
-                    [
-                        ioctl(0, SNDCTL_DSP_SPEED, 0);
-                    ],
-                    ac_cv_header_sys_soundcard=yes,
-                    [
-                        LIBS="$saveLibs"
-                        ac_cv_header_sys_soundcard=no
-                    ]
-                )
-            ]
-        )
-    ])
+    dnl mmedia doesn't compile with wxMGL, remove this if this is ever fixed
+    if test "$wxUSE_MGL" != 1; then
+        dnl it's not enough to check for just the header because OSS under NetBSD
+        dnl redefines ioctl as oss_ioctrl inside it and so we also need to test
+        dnl whether we need -lossaudio at link-time
+        AC_CACHE_CHECK([for SNDCTL_DSP_SPEED in sys/soundcard.h], ac_cv_header_sys_soundcard, [
+            AC_TRY_LINK([
+                    #include <sys/ioctl.h>
+                    #include <sys/soundcard.h>
+                ],
+                [
+                    ioctl(0, SNDCTL_DSP_SPEED, 0);
+                ],
+                ac_cv_header_sys_soundcard=yes,
+                [
+                    saveLibs="$LIBS"
+                    LIBS="$saveLibs -lossaudio"
+                    AC_TRY_LINK([
+                            #include <sys/ioctl.h>
+                            #include <sys/soundcard.h>
+                        ],
+                        [
+                            ioctl(0, SNDCTL_DSP_SPEED, 0);
+                        ],
+                        ac_cv_header_sys_soundcard=yes,
+                        [
+                            LIBS="$saveLibs"
+                            ac_cv_header_sys_soundcard=no
+                        ]
+                    )
+                ]
+            )
+        ])
+    fi
 
     if test "$ac_cv_header_sys_soundcard" = "yes"; then
         AC_DEFINE(HAVE_SYS_SOUNDCARD_H)
@@ -5647,6 +5710,7 @@ if test "$USE_UNIX" = "1" ; then
         DISABLED_CONTRIB="$DISABLED_CONTRIB mmedia"
     fi
 fi
+
 WITH_PLUGIN_SDL=0
 if test "$wxUSE_SOUND" = "yes"; then
   if test "$USE_UNIX" = "1" ; then
@@ -5654,6 +5718,7 @@ if test "$wxUSE_SOUND" = "yes"; then
       AM_PATH_SDL([1.2.0],
                   [
                     EXTRALIBS_SDL="$SDL_LIBS"
+                    CFLAGS="$SDL_CFLAGS $CFLAGS"
                     CXXFLAGS="$SDL_CFLAGS $CXXFLAGS"
                     AC_DEFINE(wxUSE_LIBSDL)
                   ],
@@ -5685,6 +5750,7 @@ if test "$WXGTK20" = 1; then
                 PKG_CHECK_MODULES(LIBGNOMEPRINTUI,
                                   [libgnomeprintui-2.2 >= 2.8],
                     [
+                        CFLAGS="$LIBGNOMEPRINTUI_CFLAGS $CFLAGS"
                         CXXFLAGS="$LIBGNOMEPRINTUI_CFLAGS $CXXFLAGS"
                         AC_DEFINE(wxUSE_LIBGNOMEPRINT)
                     ],
@@ -5702,6 +5768,7 @@ if test "$WXGTK20" = 1; then
                 PKG_CHECK_MODULES(GNOMEVFS,
                                   [gnome-vfs-2.0 >= 2.0],
                     [
+                        CFLAGS="$GNOMEVFS_CFLAGS $CFLAGS"
                         CXXFLAGS="$GNOMEVFS_CFLAGS $CXXFLAGS"
                         AC_DEFINE(wxUSE_LIBGNOMEVFS)
                     ],
@@ -5718,6 +5785,7 @@ if test "$WXGTK20" = 1; then
                           [hildon-lgpl >= 0.9],
             [
                 EXTRALIBS_HILDON="$HILDON_LIBS"
+                CFLAGS="$CFLAGS $HILDON_CFLAGS"
                 CXXFLAGS="$CXXFLAGS $HILDON_CFLAGS"
                 AC_DEFINE(wxUSE_LIBHILDON)
             ],
@@ -5920,10 +5988,12 @@ dnl ---------------------------------------------------------------------------
 
 if test "$wxUSE_DATETIME" = "yes"; then
     dnl check for strptime and for its declaration as some systems lack it
+    dnl FIXME: use WX_CHECK_FUNCS instead
     AC_CHECK_FUNCS(strptime)
     if test "$ac_cv_func_strptime" = "yes"; then
         AC_CACHE_CHECK([for strptime declaration], wx_cv_func_strptime_decl,
             [
+                AC_LANG_PUSH(C++)
                 AC_TRY_COMPILE(
                     [
                         #include <time.h>
@@ -5935,6 +6005,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
                     wx_cv_func_strptime_decl=yes,
                     wx_cv_func_strptime_decl=no
                 )
+                AC_LANG_POP()
             ]
         )
     fi
@@ -5947,6 +6018,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
     AC_CACHE_CHECK(for timezone variable in <time.h>,
                    wx_cv_var_timezone,
                    [
+                        AC_LANG_PUSH(C++)
                         AC_TRY_COMPILE(
                             [
                                 #include <time.h>
@@ -5992,6 +6064,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
                                 )
                             ]
                         )
+                        AC_LANG_POP()
                    ]
     )
 
@@ -6116,6 +6189,7 @@ if test "$wxUSE_SOCKETS" = "yes" ; then
         AC_CACHE_CHECK([what is the type of the third argument of getsockname],
                        wx_cv_type_getsockname3,
             [
+                AC_LANG_PUSH(C++)
                 AC_TRY_COMPILE(
                     [
                         #include <sys/types.h>
@@ -6133,9 +6207,9 @@ if test "$wxUSE_SOCKETS" = "yes" ; then
                         dnl converting between incompatible pointer types, so
                         dnl try to use it to get the correct behaviour at
                         dnl least with gcc (otherwise we'd always use size_t)
-                        CXXFLAGS_OLD="$CXXFLAGS"
+                        CFLAGS_OLD="$CFLAGS"
                         if test "$GCC" = yes ; then
-                            CXXFLAGS="-Werror $CXXFLAGS"
+                            CFLAGS="-Werror $CFLAGS"
                         fi
 
                         AC_TRY_COMPILE(
@@ -6162,9 +6236,10 @@ if test "$wxUSE_SOCKETS" = "yes" ; then
                             )
                         )
 
-                        CXXFLAGS="$CXXFLAGS_OLD"
+                        CFLAGS="$CFLAGS_OLD"
                     ]
                 )
+                AC_LANG_POP()
             ])
 
         if test "$wx_cv_type_getsockname3" = "unknown"; then
@@ -6188,17 +6263,12 @@ if test "$wxUSE_SOCKETS" = "yes" ; then
                     ],
                     wx_cv_type_getsockopt5=socklen_t,
                     [
-                        dnl the compiler will compile the version with size_t
-                        dnl even if the real type of the last parameter is int
-                        dnl but it should give at least a warning about
-                        dnl converting between incompatible pointer types, so
-                        dnl try to use it to get the correct behaviour at
-                        dnl least with gcc (otherwise we'd always use size_t)
-                        CXXFLAGS_OLD="$CXXFLAGS"
-                        if test "$GCC" = yes ; then
-                            CXXFLAGS="-Werror $CXXFLAGS"
-                        fi
-
+                        dnl Note that the rules for compatibility of pointers
+                        dnl are somewhat different between C and C++, so code 
+                        dnl that fails in C++ may not even give a warning about
+                        dnl converting between incompatible pointer types in C.
+                        dnl So this test needs to be done in C++ mode.
+                        AC_LANG_PUSH(C++)
                         AC_TRY_COMPILE(
                             [
                                 #include <sys/types.h>
@@ -6222,8 +6292,7 @@ if test "$wxUSE_SOCKETS" = "yes" ; then
                                 wx_cv_type_getsockopt5=unknown
                             )
                         )
-
-                        CXXFLAGS="$CXXFLAGS_OLD"
+                        AC_LANG_POP()
                     ]
                 )
             ])
@@ -6302,18 +6371,29 @@ if test "$wxUSE_GUI" = "yes" -a "$wxUSE_JOYSTICK" = "yes"; then
         if test "$USE_DARWIN" = 1; then
             dnl check for a bug in the headers, some have bad setEventCallout
             AC_MSG_CHECKING([headers have declarations needed for joystick support])
+            AC_LANG_PUSH(C++)
             AC_TRY_COMPILE( [ #include <IOKit/hid/IOHIDLib.h> ],
                             [ IOHIDQueueInterface *qi = NULL;
                               IOHIDCallbackFunction cb = NULL;
                               qi->setEventCallout(NULL, cb, NULL, NULL); ],
                             [ wxUSE_JOYSTICK=yes ]
                           )
+            AC_LANG_POP()
             AC_MSG_RESULT($wxUSE_JOYSTICK)
         fi
 
     dnl joystick support is only for Linux 2.1.x or greater
     else
-        AC_CHECK_HEADERS(linux/joystick.h, wxUSE_JOYSTICK=yes)
+        dnl wxJoystick not supported by wxMGL at all
+        if test "$wxUSE_MGL" != "1"; then
+            dnl notice the dummy includes argument: without it, AC_CHECK_HEADER
+            dnl checks only whether the header can be preprocessed, not that it
+            dnl can be compiled and in Linux 2.6.16 joystick.h is present but
+            dnl can't be compiled because of an error and with the default
+            dnl AC_CHECK_HEADER semantics we'd still detect it in this case and
+            dnl build would fail later
+            AC_CHECK_HEADER(linux/joystick.h, wxUSE_JOYSTICK=yes,,[#include <stdio.h>])
+        fi
     fi
 
     if test "$wxUSE_JOYSTICK" = "yes"; then
@@ -7325,9 +7405,6 @@ dnl ---------------------------------------------------------------------------
 dnl Output the makefiles and such from the results found above
 dnl ---------------------------------------------------------------------------
 
-dnl no more tests from here
-AC_LANG_POP
-
 dnl all additional libraries (except wxWidgets itself) we link with
 
 if test "$wxUSE_MAC" = 1 ; then
@@ -7901,7 +7978,10 @@ AC_CONFIG_FILES([ lib/wx/config/inplace-${TOOLCHAIN_FULLNAME}:wx-config-inplace.
                 [ chmod +x lib/wx/config/inplace-${TOOLCHAIN_FULLNAME} ],
                 [ TOOLCHAIN_FULLNAME="${TOOLCHAIN_FULLNAME}" ])
 
-AC_CONFIG_FILES([ version-script Makefile ])
+if test "$wx_cv_version_script" = "yes"; then
+    AC_CONFIG_FILES(version-script)
+fi
+AC_CONFIG_FILES(Makefile)
 
 AC_CONFIG_COMMANDS([wx-config],
                    [ rm -f wx-config
@@ -7952,7 +8032,7 @@ for subdir in `echo $SUBDIRS`; do
                 disabled_var=DISABLED_`echo $subdir | tr [[a-z]] [[A-Z]]`;
                 eval "disabled=\$$disabled_var"
                 disabled=/`echo X $disabled | sed 's@ @/|/@g'`/
-                makefiles=`(cd $srcdir ; find $subdir -name Makefile.in) | egrep -v "$disabled"`
+                makefiles=`(cd $srcdir ; find $subdir -name Makefile.in) | $EGREP -v "$disabled"`
             fi
         else dnl we build wxBase only
             dnl don't take all samples/utils, just those which build with