--- rpl/Attic/configure	2011/09/16 14:42:01	1.80
+++ rpl/Attic/configure	2011/09/16 17:57:16	1.82
@@ -619,6 +619,7 @@ FINAL_ENCODING
 SIGSEGV
 BUILD_OPENMOTIF
 OPENMOTIF
+LIBXPM
 OPENSSL
 SQLITE
 ICONV
@@ -1464,7 +1465,7 @@ Optional Features:
   --disable-dependency-tracking  speeds up one-time build
   --enable-dependency-tracking   do not reject slow dependency extractors
   --enable-optimization   set compiler flags [default=environment variables -O3]
-  --enable-sysv-ipcs      use SystemV IPC functions [default=no]
+  --enable-sysv-ipcs      use SystemV IPC functions [default=guessed]
   --enable-full-static    build static RPL/2 engine [default=shared]
   --enable-final-encoding force final encoding [default=guessed]
   --enable-tex            provide the TeX support [default=guessed]
@@ -6003,9 +6004,60 @@ else
 	IPCS_SYSV=yes
 fi
 else
-  IPCS_SYSV=no
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for POSIX semaphores" >&5
+$as_echo_n "checking for POSIX semaphores... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int
+main ()
+{
+ int fd; char *sem = "/sem.test";
+fd = shm_open(sem , O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
+  close(fd);
+  shm_unlink(sem);
+  return(0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  IPCS_SYSV=-UIPCS_SYSV; { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  IPCS_SYSV=-DIPCS_SYSV; { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
 fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+
 
+if test "$IPCS_SYSV" = "-UIPCS_SYSV"; then
+REG=$LDFLAGS
+LDFLAGS=-pthread
+AC_MSG_CHECKING([for POSIX anonymous semaphores])
+AC_RUN_IFELSE(
+[AC_LANG_PROGRAM([#include <semaphore.h>
+ ],
+[ sem_t sem;
+ if (sem_init(&sem, 1, 0) != 0) return(1);
+ sem_destroy(&sem);
+  return(0);
+])],
+[SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES; AC_MSG_RESULT(yes)],
+[SEMAPHORES_NOMMES=-DSEMAPHORES_NOMMES; AC_MSG_RESULT(no)],
+	)
+LDFLAGS=$REG
+REG=""
+else
+	SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
+fi
 
 # Check whether --enable-full-static was given.
 if test "${enable_full_static+set}" = set; then :
@@ -9144,8 +9196,6 @@ case $OS in
     Darwin)
 		EXPORT_DYNAMIC=-Wl,-flat_namespace
 		NESTED_FUNCTIONS=-fnested-functions
-		SEMAPHORES_NOMMES=-DSEMAPHORES_NOMMES
-		IPCS_SYSV=-UIPCS_SYSV
 		CXXFLAGS="$CXXFLAGS -D_GLIBCXX_FULLY_DYNAMIC_STRING"
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
@@ -9159,8 +9209,6 @@ case $OS in
     Cygwin)
 		EXPORT_DYNAMIC=-Wl,--export-all-symbols
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-		IPCS_SYSV=-UIPCS_SYSV
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
 				CFLAGS=\"$CFLAGS\" CXXFLAGS=\"$CXXFLAGS\" \
@@ -9173,8 +9221,6 @@ case $OS in
 	Interix)
 		EXPORT_DYNAMIC=-Wl,--export-all-symbols
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-		IPCS_SYSV=-UIPCS_SYSV
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
 				CFLAGS=\"$CFLAGS\" CXXFLAGS=\"$CXXFLAGS\" \
@@ -9187,8 +9233,6 @@ case $OS in
     AIX)
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-DSEMAPHORES_NOMMES
-		IPCS_SYSV=-UIPCS_SYSV
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
 				CFLAGS=\"$CFLAGS\" CXXFLAGS=\"$CXXFLAGS\" \
@@ -9205,8 +9249,6 @@ case $OS in
 		OS=OS2
 		NESTED_FUNCTIONS=
 		EXPORT_DYNAMIC=-Zmap
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-		IPCS_SYSV=-DIPCS_SYSV
 		ac_configure_args="$ac_configure_args --without-readline \
 				--without-cairo --disable-shared --enable-static \
 				--enable-threads \
@@ -9223,8 +9265,6 @@ case $OS in
 		fi;
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-		IPCS_SYSV=-DIPCS_SYSV
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
 				CFLAGS=\"$CFLAGS\" CXXFLAGS=\"$CXXFLAGS\" \
@@ -9237,13 +9277,6 @@ case $OS in
     SunOS)
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-
-		if test $IPCS_SYSV = no; then
-			IPCS_SYSV=-UIPCS_SYSV
-		else
-			IPCS_SYSV=-DIPCS_SYSV
-		fi
 
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
@@ -9258,13 +9291,6 @@ case $OS in
     NetBSD)
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-
-		if test $IPCS_SYSV = no; then
-			IPCS_SYSV=-UIPCS_SYSV
-		else
-			IPCS_SYSV=-DIPCS_SYSV
-		fi
 
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
@@ -9280,13 +9306,6 @@ case $OS in
     *)
 		EXPORT_DYNAMIC=-Wl,--export-dynamic
 		NESTED_FUNCTIONS=
-		SEMAPHORES_NOMMES=-USEMAPHORES_NOMMES
-
-		if test $IPCS_SYSV = no; then
-			IPCS_SYSV=-UIPCS_SYSV
-		else
-			IPCS_SYSV=-DIPCS_SYSV
-		fi
 
 		ac_configure_args="$ac_configure_args --with-readline=builtin \
 				--disable-shared --enable-static --enable-threads \
@@ -9301,6 +9320,7 @@ esac
 
 
 
+