Do test for get{host,serv}byname_r in C++ mode, so non visible declarations

        cannot break compilation of gsocket.cpp.
Replaced AC_LANG_SAVE/RESTORE by AC_LANG_PUSH/POP for consistency.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/configure.in b/configure.in
index 4a55ba72b1e8001489c59110b2a7bdb2dc379fbb..90c039af5ea1282d14c1c787d71ff946a72fc90b 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1402,8 +1402,7 @@ dnl is -traditional needed for correct compilations
 dnl   adds -traditional for gcc if needed
 AC_PROG_GCC_TRADITIONAL
 
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 
 dnl C++-compiler checks
 dnl   defines CXX with the compiler to use
@@ -1415,7 +1414,7 @@ dnl see CFLAGS line above
 CXXFLAGS=${CXXFLAGS:=}
 AC_BAKEFILE_PROG_CXX
 
-AC_LANG_RESTORE
+AC_LANG_POP
 
 dnl ranlib command
 dnl   defines RANLIB with the appropriate command
@@ -1670,8 +1669,7 @@ case "${host}" in
       dnl ---------------------------------------------------------------------
       dnl (non-OS/2-only piece)
 
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH(C++)
 
       AC_CACHE_CHECK([for strcasecmp() in string.h], ac_cv_string_strcasecmp, [
           AC_TRY_LINK([
@@ -1707,7 +1705,7 @@ case "${host}" in
           fi
       fi
 
-      AC_LANG_RESTORE
+      AC_LANG_POP
       dnl (end of non-OS/2-only piece)
   ;;
 esac
@@ -1897,8 +1895,7 @@ if test "x$wx_largefile" = "xyes"; then
                 [if -D__STDC_EXT__ is required],
                 wx_cv_STDC_EXT_required,
                 [
-                    AC_LANG_SAVE
-                    AC_LANG_CPLUSPLUS
+                    AC_LANG_PUSH(C++)
                     AC_TRY_COMPILE(
                         [],
                         [
@@ -1909,7 +1906,7 @@ if test "x$wx_largefile" = "xyes"; then
                         wx_cv_STDC_EXT_required=no,
                         wx_cv_STDC_EXT_required=yes
                     )
-                    AC_LANG_RESTORE
+                    AC_LANG_POP
                 ]
             )
             if test "x$wx_cv_STDC_EXT_required" = "xyes"; then
@@ -2643,13 +2640,12 @@ if test "$wxUSE_EXPAT" != "no"; then
             AC_CACHE_CHECK([if expat.h is valid C++ header],
                 wx_cv_expat_is_not_broken,
                 [
-                AC_LANG_SAVE
-                AC_LANG_CPLUSPLUS
+                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_RESTORE
+                AC_LANG_POP
                 ]
             )
             if test "$wx_cv_expat_is_not_broken" = "yes" ; then
@@ -3971,8 +3967,7 @@ 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_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 AC_CACHE_CHECK([if size_t is unsigned int],
     wx_cv_size_t_is_uint,
     [
@@ -4019,7 +4014,7 @@ else
     fi
 fi
 
-AC_LANG_RESTORE
+AC_LANG_POP
 
 dnl ---------------------------------------------------------------------------
 dnl Checks for structures
@@ -4098,8 +4093,7 @@ fi
 dnl *printf() functions sometimes are available in the library but not
 dnl prototyped -- if this is the case, we can't use them from C++ code, but to
 dnl detect this we have to use C++ compiler for testing
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 
 dnl check for vsnprintf() -- a safe version of vsprintf())
 dnl
@@ -4253,7 +4247,7 @@ if test "$wxUSE_UNICODE" = yes; then
                    [AC_MSG_RESULT([no])]);
 fi
 
-AC_LANG_RESTORE
+AC_LANG_POP
 
 if test "x$ac_cv_header_fnmatch_h" = "xyes"; then
     AC_CHECK_FUNCS(fnmatch)
@@ -4269,11 +4263,10 @@ if test "$TOOLKIT" != "MSW"; then
 
 dnl check for available version of iconv()
 
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 AM_ICONV
 LIBS="$LIBICONV $LIBS"
-AC_LANG_RESTORE
+AC_LANG_POP
 
 dnl check for POSIX signals if we need them
 if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
@@ -4285,8 +4278,7 @@ if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
     fi
 
     if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes"; then
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH(C++)
 
       AC_CACHE_CHECK([for sa_handler type], wx_cv_type_sa_handler,
       [
@@ -4303,7 +4295,7 @@ if test "$wxUSE_ON_FATAL_EXCEPTION" = "yes" -a "$wxUSE_UNIX" = "yes"; then
                      ])
       ])
 
-      AC_LANG_RESTORE
+      AC_LANG_POP
 
       AC_DEFINE_UNQUOTED(wxTYPE_SA_HANDLER, $wx_cv_type_sa_handler)
     fi
@@ -4311,8 +4303,7 @@ fi
 
 dnl backtrace() and backtrace_symbols() for wxStackWalker
 if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH(C++)
 
     AC_CACHE_CHECK([for backtrace() in <execinfo.h>], wx_cv_func_backtrace,
         [
@@ -4353,7 +4344,7 @@ if test "$wxUSE_STACKWALKER" = "yes" -a "$wxUSE_UNIX" = "yes"; then
         fi
     fi
 
-    AC_LANG_RESTORE
+    AC_LANG_POP
 fi
 
 if test "$wxUSE_STACKWALKER" = "yes" -a "$USE_WIN32" != "1" -a "$USE_UNIX" != "1"; then
@@ -4392,8 +4383,7 @@ AC_CACHE_CHECK(for statfs, wx_cv_func_statfs,
 
 if test "$wx_cv_func_statfs" = "yes"; then
     dnl check whether we have its dcelaration too: some systems (AIX 4) lack it
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH(C++)
     AC_CACHE_CHECK(for statfs declaration, wx_cv_func_statfs_decl,
         AC_TRY_COMPILE(
             [
@@ -4412,7 +4402,7 @@ if test "$wx_cv_func_statfs" = "yes"; then
             wx_cv_func_statfs_decl=no
         )
     )
-    AC_LANG_RESTORE
+    AC_LANG_POP
 
     if test "$wx_cv_func_statfs_decl" = "yes"; then
         AC_DEFINE(HAVE_STATFS_DECL)
@@ -4443,8 +4433,7 @@ else
         dnl
         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_LANG_SAVE
-        AC_LANG_CPLUSPLUS
+        AC_LANG_PUSH(C++)
 
         AC_CACHE_CHECK(for statvfs argument type, wx_cv_type_statvfs_t,
             AC_TRY_COMPILE(
@@ -4480,7 +4469,7 @@ else
             )
         )
 
-        AC_LANG_RESTORE
+        AC_LANG_POP
 
         if test "$wx_cv_type_statvfs_t" != "unknown"; then
             AC_DEFINE(HAVE_STATVFS)
@@ -4556,12 +4545,11 @@ AC_CHECK_FUNCS(uname gethostname, break)
 
 dnl check for MT-safe version of strtok (on DEC Alpha, it's ok for C compiler
 dnl but not for C++ one - hence change language)
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 
 AC_CHECK_FUNCS(strtok_r)
 
-AC_LANG_RESTORE
+AC_LANG_POP
 
 dnl check for inet_addr and inet_aton (these may live either in libc, or in
 dnl libnsl or libresolv or libsocket)
@@ -5001,6 +4989,7 @@ dnl safety issues and supports IPv6, however there currently is no code
 dnl for it, so testing for it is temporarily disabled and we are restricted
 dnl to gethostbyname_r/gethostbyaddr_r  and getservbyname_r
 
+AC_LANG_PUSH(C++)
 dnl AC_CHECK_FUNC(getaddrinfo, AC_DEFINE(HAVE_GETADDRINFO), [
     dnl no getaddrinfo, so check for gethostbyname_r and
     dnl related functions (taken from python's configure.in)
@@ -5028,6 +5017,7 @@ dnl AC_CHECK_FUNC(getaddrinfo, AC_DEFINE(HAVE_GETADDRINFO), [
       dnl  check to fit this case, if it's really needed.                - SN )
 dnl    ]
 dnl )
+AC_LANG_POP
 
 if test "$wxUSE_THREADS" = "yes"; then
   AC_DEFINE(wxUSE_THREADS)
@@ -5572,8 +5562,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
     if test "$ac_cv_func_strptime" = "yes"; then
         AC_CACHE_CHECK([for strptime declaration], wx_cv_func_strptime_decl,
             [
-                AC_LANG_SAVE
-                AC_LANG_CPLUSPLUS
+                AC_LANG_PUSH(C++)
                 AC_TRY_COMPILE(
                     [
                         #include <time.h>
@@ -5585,7 +5574,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
                     wx_cv_func_strptime_decl=yes,
                     wx_cv_func_strptime_decl=no
                 )
-                AC_LANG_RESTORE
+                AC_LANG_POP
             ]
         )
     fi
@@ -5687,8 +5676,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
                        wx_cv_func_gettimeofday_has_2_args,
         [
             dnl on some _really_ old systems it takes only 1 argument
-            AC_LANG_SAVE
-            AC_LANG_CPLUSPLUS
+            AC_LANG_PUSH(C++)
 
             AC_TRY_COMPILE(
                 [
@@ -5716,7 +5704,7 @@ if test "$wxUSE_DATETIME" = "yes"; then
                     ]
                 )
             )
-            AC_LANG_RESTORE
+            AC_LANG_POP
         ])
 
         if test "$wx_cv_func_gettimeofday_has_2_args" != "yes"; then
@@ -6108,8 +6096,7 @@ if test "$USE_WIN32" = 1 -a \( "$wxUSE_DATAOBJ"       = "yes" \
 
     if test "$ac_cv_header_ole2_h" = "yes" ; then
         if test "$GCC" = yes ; then
-            AC_LANG_SAVE
-            AC_LANG_CPLUSPLUS
+            AC_LANG_PUSH(C++)
 
             AC_MSG_CHECKING([if g++ requires -fvtable-thunks])
             AC_TRY_COMPILE([#include <windows.h>
@@ -6118,7 +6105,7 @@ if test "$USE_WIN32" = 1 -a \( "$wxUSE_DATAOBJ"       = "yes" \
                            [AC_MSG_RESULT(no)],
                            [AC_MSG_RESULT(yes)
                             WXCONFIG_CXXFLAGS="$WXCONFIG_CXXFLAGS -fvtable-thunks"])
-            AC_LANG_RESTORE
+            AC_LANG_POP
             LIBS=" -lrpcrt4 -loleaut32 -lole32 -luuid$LIBS"
             if test "$wxUSE_OLE" = "yes" ; then
                 AC_DEFINE(wxUSE_OLE)