]> ncurses.scripts.mit.edu Git - ncurses.git/blobdiff - aclocal.m4
ncurses 6.0 - patch 20151121
[ncurses.git] / aclocal.m4
index c886b205e9b8b6aea37591c018b69126afa4bee0..23d500ccc1fa7c2a15345fc859a2e6642663d2fb 100644 (file)
@@ -28,7 +28,7 @@ dnl***************************************************************************
 dnl
 dnl Author: Thomas E. Dickey 1995-on
 dnl
-dnl $Id: aclocal.m4,v 1.758 2015/06/06 23:27:44 tom Exp $
+dnl $Id: aclocal.m4,v 1.785 2015/11/08 01:03:06 tom Exp $
 dnl Macros used in NCURSES auto-configuration script.
 dnl
 dnl These macros are maintained separately from NCURSES.  The copyright on
@@ -423,15 +423,19 @@ ifelse([$3],,[    :]dnl
 ])dnl
 ])])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_AR_FLAGS version: 5 updated: 2010/05/20 20:24:29
+dnl CF_AR_FLAGS version: 6 updated: 2015/10/10 15:25:05
 dnl -----------
 dnl Check for suitable "ar" (archiver) options for updating an archive.
+dnl
+dnl In particular, handle some obsolete cases where the "-" might be omitted,
+dnl as well as a workaround for breakage of make's archive rules by the GNU
+dnl binutils "ar" program.
 AC_DEFUN([CF_AR_FLAGS],[
 AC_REQUIRE([CF_PROG_AR])
 
 AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
        cf_cv_ar_flags=unknown
-       for cf_ar_flags in -curv curv -crv crv -cqv cqv -rv rv
+       for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
        do
 
                # check if $ARFLAGS already contains this choice
@@ -1373,7 +1377,7 @@ if test "$cf_disable_rpath_hack" = no ; then
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_ENABLE_PC_FILES version: 12 updated: 2015/04/17 21:13:04
+dnl CF_ENABLE_PC_FILES version: 13 updated: 2015/11/01 05:27:39
 dnl ------------------
 dnl This is the "--enable-pc-files" option, which is available if there is a
 dnl pkg-config configuration on the local machine.
@@ -1396,14 +1400,13 @@ AC_MSG_RESULT($enable_pc_files)
 
 if test "x$enable_pc_files" != xno
 then
+       MAKE_PC_FILES=
        case "x$PKG_CONFIG_LIBDIR" in
        (xno|xyes)
                AC_MSG_WARN(no PKG_CONFIG_LIBDIR was found)
-               MAKE_PC_FILES="#"
                ;;
        (*)
                CF_PATH_SYNTAX(PKG_CONFIG_LIBDIR)
-               MAKE_PC_FILES=
                ;;
        esac
 else
@@ -1693,7 +1696,7 @@ unset ac_ct_$1
 unset $1
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_DLSYM version: 3 updated: 2012/10/06 11:17:15
+dnl CF_FUNC_DLSYM version: 4 updated: 2015/09/12 14:46:44
 dnl -------------
 dnl Test for dlsym() and related functions, as well as libdl.
 dnl
@@ -1710,7 +1713,7 @@ AC_CHECK_LIB(dl,dlsym,[
        cf_have_libdl=yes])])
 
 if test "$cf_have_dlsym" = yes ; then
-       test "$cf_have_libdl" = yes && CF_ADD_LIB(dl)
+       test "$cf_have_libdl" = yes && { CF_ADD_LIB(dl) }
 
        AC_MSG_CHECKING(whether able to link to dl*() functions)
        AC_TRY_LINK([#include <dlfcn.h>],[
@@ -1793,7 +1796,7 @@ int main() {
 test "$cf_cv_func_nanosleep" = "yes" && AC_DEFINE(HAVE_NANOSLEEP,1,[Define to 1 if we have nanosleep()])
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_OPENPTY version: 4 updated: 2015/04/18 08:56:57
+dnl CF_FUNC_OPENPTY version: 5 updated: 2015/09/12 14:46:50
 dnl ---------------
 dnl Check for openpty() function, along with <pty.h> header.  It may need the
 dnl "util" library as well.
@@ -1802,7 +1805,7 @@ AC_DEFUN([CF_FUNC_OPENPTY],
 AC_CHECK_LIB(util,openpty,cf_cv_lib_util=yes,cf_cv_lib_util=no)
 AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
        cf_save_LIBS="$LIBS"
-       test $cf_cv_lib_util = yes && CF_ADD_LIB(util)
+       test $cf_cv_lib_util = yes && { CF_ADD_LIB(util) }
        for cf_header in pty.h libutil.h util.h
        do
        AC_TRY_LINK([
@@ -1821,11 +1824,12 @@ AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
 ])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_FUNC_POLL version: 8 updated: 2012/10/04 05:24:07
+dnl CF_FUNC_POLL version: 9 updated: 2015/10/10 13:27:32
 dnl ------------
 dnl See if the poll function really works.  Some platforms have poll(), but
 dnl it does not work for terminals or files.
 AC_DEFUN([CF_FUNC_POLL],[
+tty 2>&1 >/dev/null || { AC_CHECK_FUNCS(posix_openpt) }
 AC_CACHE_CHECK(if poll really works,cf_cv_working_poll,[
 AC_TRY_RUN([
 #include <stdlib.h>
@@ -1837,7 +1841,7 @@ AC_TRY_RUN([
 #else
 #include <sys/poll.h>
 #endif
-int main() {
+int main(void) {
        struct pollfd myfds;
        int ret;
 
@@ -1857,6 +1861,11 @@ int main() {
                if (!isatty(fd)) {
                        fd = open("/dev/tty", 2);       /* O_RDWR */
                }
+#ifdef HAVE_POSIX_OPENPT
+               if (fd < 0) {
+                       fd = posix_openpt(O_RDWR);
+               }
+#endif
 
                if (fd >= 0) {
                        /* also check with standard input */
@@ -3211,7 +3220,7 @@ fi
 test -z "$cf_cv_libtool_version" && unset cf_cv_libtool_version
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_PREFIX version: 11 updated: 2015/04/18 08:56:57
+dnl CF_LIB_PREFIX version: 12 updated: 2015/10/17 19:03:33
 dnl -------------
 dnl Compute the library-prefix for the given host system
 dnl $1 = variable to set
@@ -3219,7 +3228,11 @@ define([CF_LIB_PREFIX],
 [
        case $cf_cv_system_name in
        (OS/2*|os2*)
-               LIB_PREFIX=''
+               if test "$DFT_LWR_MODEL" = libtool; then
+                       LIB_PREFIX='lib'
+               else
+                       LIB_PREFIX=''
+               fi
                ;;
        (*)     LIB_PREFIX='lib'
                ;;
@@ -3228,7 +3241,7 @@ ifelse($1,,,[$1=$LIB_PREFIX])
        AC_SUBST(LIB_PREFIX)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_LIB_RULES version: 81 updated: 2015/04/30 20:30:18
+dnl CF_LIB_RULES version: 86 updated: 2015/11/07 20:01:34
 dnl ------------
 dnl Append definitions and rules for the given models to the subdirectory
 dnl Makefiles, and the recursion rule for the top-level Makefile.  If the
@@ -3280,27 +3293,35 @@ do
 
                SHARED_LIB=
                Libs_To_Make=
-
-               cf_sed_options=
+               cf_awk_program=
                if test -n "${cf_cv_abi_version}" && test "x${cf_cv_abi_version}" != "x5"
                then
-                       cf_sed_options="$cf_sed_options -e \"s/NCURSES\\([[WT]]\\+\\)\?_/NCURSES\\1${cf_cv_abi_version}_/g\""
+                       cf_awk_program="$cf_awk_program\
+/deprecated in ABI${cf_cv_abi_version}/ { next; }\
+{ sub(\"NCURSES([[WT]]+)?\", \"&${cf_cv_abi_version}\"); }\
+"
                fi
 
                if test "x$WILDCARD_SYMS" = xno
                then
-                       cf_sed_options="$cf_sed_options -e \"s/_\*;//g\""
+                       cf_awk_program="$cf_awk_program\
+/[[    ]]_\\*;/ { skip=1; next; }\
+"
                fi
 
-               if test "x$cf_sed_options" != "x"
+               if test "x$cf_awk_program" != "x"
                then
                        cat >>$cf_dir/Makefile <<CF_EOF
 
 # Generated by CF_LIB_RULES
 resulting.map: $UNALTERED_SYMS
-       sed $cf_sed_options < $UNALTERED_SYMS >\[$]@
+       $AWK 'BEGIN { skip = 1; last=""; } \
+$cf_awk_program \
+{ if ( last != "" && ( skip == 0 || \[$]\[$]0 !~ /}/ ) ) { print last; }\
+ skip = 0; last = \[$]\[$]0; } \
+END { print last; }' < $UNALTERED_SYMS >\[$]@
 
-clean::
+distclean::
        rm -f resulting.map
 CF_EOF
                fi
@@ -3699,7 +3720,7 @@ rm -f headers.sed headers.sh
 dnl ( generating this script makes the makefiles a little tidier :-)
 echo creating headers.sh
 cat >headers.sh <<CF_EOF
-#! /bin/sh
+#! $SHELL
 # This shell script is generated by the 'configure' script.  It is invoked in a
 # subdirectory of the build tree.  It generates a sed-script in the parent
 # directory that is used to adjust includes for header files that reside in a
@@ -4044,7 +4065,7 @@ int main()
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MAKEFLAGS version: 16 updated: 2015/04/15 19:08:48
+dnl CF_MAKEFLAGS version: 17 updated: 2015/08/05 20:44:28
 dnl ------------
 dnl Some 'make' programs support ${MAKEFLAGS}, some ${MFLAGS}, to pass 'make'
 dnl options to lower-levels.  It's very useful for "make -n" -- if we have it.
@@ -4057,7 +4078,7 @@ AC_CACHE_CHECK(for makeflags variable, cf_cv_makeflags,[
        for cf_option in '-${MAKEFLAGS}' '${MFLAGS}'
        do
                cat >cf_makeflags.tmp <<CF_EOF
-SHELL = /bin/sh
+SHELL = $SHELL
 all :
        @ echo '.$cf_option'
 CF_EOF
@@ -4230,7 +4251,7 @@ if test -n "$cf_unknown" ; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MANPAGE_RENAMES version: 9 updated: 2015/04/18 08:56:57
+dnl CF_MANPAGE_RENAMES version: 10 updated: 2015/08/05 20:44:28
 dnl ------------------
 dnl The Debian people have their own naming convention for manpages.  This
 dnl option lets us override the name of the file containing renaming, or
@@ -4269,7 +4290,7 @@ if test "$MANPAGE_RENAMES" != no ; then
        # Construct a sed-script to perform renaming within man-pages
        if test -n "$MANPAGE_RENAMES" ; then
                test ! -d man && mkdir man
-               sh $srcdir/man/make_sed.sh $MANPAGE_RENAMES >./edit_man.sed
+               $SHELL $srcdir/man/make_sed.sh $MANPAGE_RENAMES >./edit_man.sed
        fi
 fi
 
@@ -4339,7 +4360,7 @@ AC_ARG_WITH(manpage-tbl,
 AC_MSG_RESULT($MANPAGE_TBL)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_MAN_PAGES version: 45 updated: 2015/04/18 08:56:57
+dnl CF_MAN_PAGES version: 46 updated: 2015/08/05 20:44:28
 dnl ------------
 dnl Try to determine if the man-pages on the system are compressed, and if
 dnl so, what format is used.  Use this information to construct a script that
@@ -4392,7 +4413,7 @@ cf_edit_man=./edit_man.sh
 cf_man_alias=`pwd`/man_alias.sed
 
 cat >$cf_edit_man <<CF_EOF
-#! /bin/sh
+#! $SHELL
 # this script is generated by the configure-script CF_MAN_PAGES macro.
 
 prefix="$cf_prefix"
@@ -4430,7 +4451,7 @@ shift || exit 1
 if test "\$form" = normal ; then
        if test "$cf_format" = yes ; then
        if test "$cf_inboth" = no ; then
-               sh \[$]0 format \$verb \$mandir \$srcdir \[$]*
+               $SHELL \[$]0 format \$verb \$mandir \$srcdir \[$]*
                exit $?
        fi
        fi
@@ -4671,7 +4692,7 @@ done
 
 if test $cf_inboth = yes ; then
 if test \$form != format ; then
-       sh \[$]0 format \$verb \$mandir \$srcdir \[$]*
+       $SHELL \[$]0 format \$verb \$mandir \$srcdir \[$]*
 fi
 fi
 
@@ -5510,7 +5531,7 @@ CF_VERBOSE(...checked $1 [$]$1)
 AC_SUBST(EXTRA_LDFLAGS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_SHARED_OPTS version: 87 updated: 2015/04/17 21:13:04
+dnl CF_SHARED_OPTS version: 89 updated: 2015/08/15 18:38:59
 dnl --------------
 dnl --------------
 dnl Attempt to determine the appropriate CC/LD options for creating a shared
@@ -5563,11 +5584,12 @@ AC_DEFUN([CF_SHARED_OPTS],
        (yes)
                cf_cv_shlib_version=auto
                ;;
-       (rel|abi|auto|no)
+       (rel|abi|auto)
                cf_cv_shlib_version=$withval
                ;;
        (*)
-               AC_MSG_ERROR([option value must be one of: rel, abi, auto or no])
+               AC_MSG_RESULT($withval)
+               AC_MSG_ERROR([option value must be one of: rel, abi, or auto])
                ;;
        esac
        ],[cf_cv_shlib_version=auto])
@@ -5609,14 +5631,14 @@ AC_DEFUN([CF_SHARED_OPTS],
                ;;
        (cygwin*)
                CC_SHARED_OPTS=
-               MK_SHARED_LIB='sh '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
+               MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
                RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
                cf_cv_shlib_version=cygdll
                cf_cv_shlib_version_infix=cygdll
                shlibdir=$bindir
                MAKE_DLLS=
                cat >mk_shared_lib.sh <<-CF_EOF
-               #!/bin/sh
+               #!$SHELL
                SHARED_LIB=\[$]1
                IMPORT_LIB=\`echo "\[$]1" | sed -e 's/cyg/lib/' -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
                shift
@@ -5631,14 +5653,14 @@ CF_EOF
                ;;
        (msys*)
                CC_SHARED_OPTS=
-               MK_SHARED_LIB='sh '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
+               MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
                RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
                cf_cv_shlib_version=msysdll
                cf_cv_shlib_version_infix=msysdll
                shlibdir=$bindir
                MAKE_DLLS=
                cat >mk_shared_lib.sh <<-CF_EOF
-               #!/bin/sh
+               #!$SHELL
                SHARED_LIB=\[$]1
                IMPORT_LIB=\`echo "\[$]1" | sed -e 's/msys-/lib/' -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
                shift
@@ -5732,10 +5754,10 @@ CF_EOF
                        EXTRA_LDFLAGS="-Wl,--enable-auto-import $EXTRA_LDFLAGS"
                fi
                CC_SHARED_OPTS=
-               MK_SHARED_LIB='sh '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
+               MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
                RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
                cat >mk_shared_lib.sh <<-CF_EOF
-               #!/bin/sh
+               #!$SHELL
                SHARED_LIB=\[$]1
                IMPORT_LIB=\`echo "\[$]1" | sed -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
                shift
@@ -6245,33 +6267,55 @@ if test -n "$ADA_SUBDIRS"; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_STDCPP_LIBRARY version: 8 updated: 2015/04/17 21:13:04
+dnl CF_STDCPP_LIBRARY version: 11 updated: 2015/10/17 19:03:33
 dnl -----------------
 dnl Check for -lstdc++, which is GNU's standard C++ library.
+dnl If $CXXLIBS is set, add that to the libraries used for test-linking.
+dnl If -lstdc++ was not already added to $LIBS or $CXXLIBS, and is needed,
+dnl add it to $CXXLIBS.
 AC_DEFUN([CF_STDCPP_LIBRARY],
 [
 if test -n "$GXX" ; then
-case $cf_cv_system_name in
-(os2*)
-       cf_stdcpp_libname=stdcpp
-       ;;
-(*)
-       cf_stdcpp_libname=stdc++
-       ;;
-esac
-AC_CACHE_CHECK(for library $cf_stdcpp_libname,cf_cv_libstdcpp,[
+
        cf_save="$LIBS"
-       CF_ADD_LIB($cf_stdcpp_libname)
-AC_TRY_LINK([
-#include <strstream.h>],[
-char buf[80];
-strstreambuf foo(buf, sizeof(buf))
-],
-       [cf_cv_libstdcpp=yes],
-       [cf_cv_libstdcpp=no])
+       LIBS="$LIBS $CXXLIBS"
+       AC_MSG_CHECKING(if we already have C++ library)
+       AC_TRY_LINK([
+                       #include <iostream>],[
+                       std::cout << "Hello World!" << std::endl;],
+               [cf_have_libstdcpp=yes],
+               [cf_have_libstdcpp=no])
+       AC_MSG_RESULT($cf_have_libstdcpp)
        LIBS="$cf_save"
-])
-test "$cf_cv_libstdcpp" = yes && CF_ADD_LIB($cf_stdcpp_libname,CXXLIBS)
+
+       if test $cf_have_libstdcpp != yes
+       then
+               case $cf_cv_system_name in
+               (os2*)
+                       if test -z "`g++ -dM -E - < /dev/null | grep __KLIBC__`"; then
+                               cf_stdcpp_libname=stdcpp
+                       else
+                               cf_stdcpp_libname=stdc++
+                       fi
+                       ;;
+               (*)
+                       cf_stdcpp_libname=stdc++
+                       ;;
+               esac
+
+               AC_CACHE_CHECK(for library $cf_stdcpp_libname,cf_cv_libstdcpp,[
+                       cf_save="$LIBS"
+                       LIBS="$LIBS $CXXLIBS"
+                       CF_ADD_LIB($cf_stdcpp_libname)
+               AC_TRY_LINK([
+                               #include <iostream>],[
+                               std::cout << "Hello World!" << std::endl;],
+                       [cf_cv_libstdcpp=yes],
+                       [cf_cv_libstdcpp=no])
+                       LIBS="$cf_save"
+               ])
+               test "$cf_cv_libstdcpp" = yes && { CF_ADD_LIB($cf_stdcpp_libname,CXXLIBS) }
+       fi
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
@@ -7017,7 +7061,7 @@ if test "$with_gpm" != no ; then
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_LIBTOOL version: 32 updated: 2015/04/17 21:13:04
+dnl CF_WITH_LIBTOOL version: 33 updated: 2015/10/17 19:03:33
 dnl ---------------
 dnl Provide a configure option to incorporate libtool.  Define several useful
 dnl symbols for the makefile rules.
@@ -7115,7 +7159,7 @@ ifdef([AC_PROG_LIBTOOL],[
        # special hack to add -no-undefined (which libtool should do for itself)
        LT_UNDEF=
        case "$cf_cv_system_name" in
-       (cygwin*|msys*|mingw32*|uwin*|aix[[4-7]])
+       (cygwin*|msys*|mingw32*|os2*|uwin*|aix[[4-7]])
                LT_UNDEF=-no-undefined
                ;;
        esac
@@ -7280,19 +7324,25 @@ AC_SUBST($3)dnl
 
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_PKG_CONFIG_LIBDIR version: 9 updated: 2015/06/06 19:26:44
+dnl CF_WITH_PKG_CONFIG_LIBDIR version: 10 updated: 2015/08/22 17:10:56
 dnl -------------------------
 dnl Allow the choice of the pkg-config library directory to be overridden.
 AC_DEFUN([CF_WITH_PKG_CONFIG_LIBDIR],[
-if test "x$PKG_CONFIG" = xnone ; then
-       PKG_CONFIG_LIBDIR=no
-else
+
+case $PKG_CONFIG in
+(no|none|yes)
+       AC_MSG_CHECKING(for pkg-config library directory)
+       ;;
+(*)
        AC_MSG_CHECKING(for $PKG_CONFIG library directory)
-       AC_ARG_WITH(pkg-config-libdir,
-               [  --with-pkg-config-libdir=XXX use given directory for installing pc-files],
-               [PKG_CONFIG_LIBDIR=$withval],
-               [PKG_CONFIG_LIBDIR=yes])
-fi
+       ;;
+esac
+
+PKG_CONFIG_LIBDIR=no
+AC_ARG_WITH(pkg-config-libdir,
+       [  --with-pkg-config-libdir=XXX use given directory for installing pc-files],
+       [PKG_CONFIG_LIBDIR=$withval],
+       [test "x$PKG_CONFIG" != xnone && PKG_CONFIG_LIBDIR=yes])
 
 case x$PKG_CONFIG_LIBDIR in
 (x/*)
@@ -7348,7 +7398,7 @@ case x$PKG_CONFIG_LIBDIR in
        ;;
 esac
 
-if test "x$PKG_CONFIG" != xnone ; then
+if test "x$PKG_CONFIG_LIBDIR" != xno ; then
        AC_MSG_RESULT($PKG_CONFIG_LIBDIR)
 fi
 
@@ -7480,7 +7530,7 @@ CF_NO_LEAKS_OPTION(valgrind,
        [USE_VALGRIND])
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_WITH_VERSIONED_SYMS version: 5 updated: 2015/04/17 21:13:04
+dnl CF_WITH_VERSIONED_SYMS version: 7 updated: 2015/10/24 20:50:26
 dnl ----------------------
 dnl Use this when building shared library with ELF, to markup symbols with the
 dnl version identifier from the given input file.  Generally that identifier is
@@ -7594,8 +7644,8 @@ EOF
                # compile source, make library
                if make -f conftest.mk 2>&AC_FD_CC >/dev/null
                then
-                       # test for missing symbol
-                       cf_missing=`nm -P conftest.so 2>&AC_FD_CC |fgrep _ismissing | egrep '[[         ]]T[[   ]]'`
+                       # test for missing symbol in either Data or Text section
+                       cf_missing=`nm -P conftest.so 2>&AC_FD_CC |fgrep _ismissing | egrep '[[         ]][[DT]][[      ]]'`
                        test -n "$cf_missing" && WILDCARD_SYMS=yes
                fi
                AC_MSG_RESULT($WILDCARD_SYMS)
@@ -7607,7 +7657,7 @@ AC_SUBST(VERSIONED_SYMS)
 AC_SUBST(WILDCARD_SYMS)
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_XOPEN_SOURCE version: 49 updated: 2015/04/12 15:39:00
+dnl CF_XOPEN_SOURCE version: 50 updated: 2015/10/17 19:03:33
 dnl ---------------
 dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions,
 dnl or adapt to the vendor's definitions to get equivalent functionality,
@@ -7677,6 +7727,9 @@ case $host_os in
 (openbsd*)
        # setting _XOPEN_SOURCE breaks xterm on OpenBSD 2.8, is not needed for ncursesw
        ;;
+(os2*)
+       cf_XOPEN_SOURCE=
+       ;;
 (osf[[45]]*)
        cf_xopen_source="-D_OSF_SOURCE"
        ;;