added check for mkfifo(), made it also an option

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@202 ea778897-0a13-0410-b9d1-a72fbfd435f5

configure.in

@@ -50,7 +50,7 @@ AC_FUNC_REALLOC
 AC_TYPE_SIGNAL
 AC_FUNC_STAT
 AC_FUNC_VPRINTF
-AC_CHECK_FUNCS([gethostname ftruncate fgetpos getcwd gettimeofday isascii mblen memmove memset munmap putenv realpath regcomp setenv strcasecmp strchr strdup strerror strrchr strspn strstr strtol])
+AC_CHECK_FUNCS([gethostname ftruncate fgetpos getcwd gettimeofday isascii mblen memset munmap putenv realpath regcomp setenv strcasecmp strchr strdup strerror strrchr strspn strstr strtol])
 
 # autoscan end
 
@@ -59,13 +59,29 @@ PKG_CHECK_MODULES(PACKAGE, [$pkg_modules])
 AC_SUBST(PACKAGE_CFLAGS)
 AC_SUBST(PACKAGE_LIBS)
 
+# fifo support
+AC_CHECK_FUNC([mkfifo], [have_mkfifo="1"])
+want_pipe=yes
+AC_ARG_ENABLE(pipe, [  --enable-pipe            enable if you want to detect a running instance [[default=yes]]],
+ [want_pipe="$enableval"])
+
+if test "x$want_pipe" = "xyes"; then
+	if test "x$have_mkfifo" = "x1"; then
+		AC_DEFINE(HAVE_FIFO, 1, [Define if you want to detect a running instance])
+	else
+		want_pipe=no
+	fi
+fi
+
+# VTE support
 want_vte=yes
 AC_ARG_ENABLE(vte, [  --enable-vte            enable if you want virtual termninal support [[default=yes]]],
  [want_vte="$enableval"])
 
-if test "$want_vte" = "yes"; then
+if test "x$want_vte" = "xyes"; then
 	AC_DEFINE(HAVE_VTE, 1, [Define if you want VTE support])
 fi
+
 # if test "$want_vte" = "yes"; then
 #   PKG_CHECK_MODULES(VTE, [vte],
 #                     [AC_DEFINE(HAVE_VTE, 1, [Define if you want VTE support])],
@@ -75,7 +91,7 @@ fi
 #					[AC_MSG_ERROR([VTE support enabled, but VTE not found])], [])
 # fi
 
-dnl Check for random number paths
+# Check for random number paths
 AC_CHECK_FILE([/dev/urandom], AC_DEFINE([HAVE_DEVURANDOM], [1], [Define that you found /dev/urandom]))
 AC_CHECK_FILE([/dev/random], AC_DEFINE([HAVE_DEVRANDOM], [1], [Define that you found /dev/random]))
 
@@ -86,7 +102,7 @@ GETTEXT_PACKAGE=geany
 AC_SUBST(GETTEXT_PACKAGE)
 AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE", [Gettext package.])
 
-dnl Add the languages which your application supports here.
+# Add the languages which your application supports here.
 ALL_LINGUAS="de"
 AM_GLIB_GNU_GETTEXT
 
@@ -115,7 +131,9 @@ geany.desktop
 
 echo "----------------------------------------"
 echo "Install Geany in                   : ${prefix}"
-echo "Using GTK version                  : $GTK_VERSION"
+echo "Using GTK version                  : ${GTK_VERSION}"
 echo "Use virtual terminal support       : ${want_vte}"
+echo "Use named pipe support             : ${want_pipe}"
+echo ""
 echo "Configuration is done OK."
 echo ""