Use -1 as file descriptor "not open" value instead of 0

[debian/gnuradio] / config / pkg.m4

diff --git a/config/pkg.m4 b/config/pkg.m4
index b85cf3a3e27e15c345dd901a78be3f5b540c4430..2d4d96109d5bd4068183a1a6d1c681cd7a4bd7cb 100644 (file)
--- a/config/pkg.m4
+++ b/config/pkg.m4
@@ -1,6 +1,7 @@
 # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
 # 
 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+# Copyright © 2008 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -96,18 +97,28 @@ fi[]dnl
 #
 # E.g.,
 #   PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
-#   defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
-#   also defines GSTUFF_PKG_ERRORS on error
+#   defines:
+#
+#     GSTUFF_LIBS
+#     GSTUFF_CFLAGS
+#     GSTUFF_INCLUDEDIR
+#     GSTUFF_CPPFLAGS    # the -I, -D and -U's out of CFLAGS
+#
+# see pkg-config man page also defines GSTUFF_PKG_ERRORS on error
 #
 # Note that if there is a possibility the first call to
 # PKG_CHECK_MODULES might not happen, you should be sure to include an
 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
 #
 # --------------------------------------------------------------
-AC_DEFUN([PKG_CHECK_MODULES],
-[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_DEFUN([PKG_CHECK_MODULES],[
+AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+
 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_INCLUDEDIR], [includedir for $1, overriding pkg-config])dnl
 
 pkg_failed=no
 AC_MSG_CHECKING([for $1])
@@ -116,11 +127,24 @@ _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
 
 if test x$cross_compiling = xyes
 then
-  _PKG_CONFIG([$1][_LIBS], [libs-only-l --static], [$2])
+  dnl _PKG_CONFIG([$1][_LIBS], [libs-only-l --static], [$2])
+  _PKG_CONFIG([$1][_LIBS], [libs --static], [$2])
+  dnl prune out any -L/lib or -L/usr/lib since they're pointing to the wrong filesystem root
+  _pkg_tmp=
+  for flag in [$]pkg_cv_[$1][_LIBS]; do
+    case $flag in
+    (-L/lib* | -L/usr/lib* )      ;; # ignore
+    (*) _pkg_tmp="$_pkg_tmp $flag" ;;
+    esac
+  done
+  pkg_cv_[$1][_LIBS]="$_pkg_tmp"
 else
   _PKG_CONFIG([$1][_LIBS], [libs --static], [$2])
 fi
 
+_PKG_CONFIG([$1][_INCLUDEDIR], [variable=includedir], [$2])
+
+
 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
 and $1[]_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details.])
@@ -160,6 +184,17 @@ To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
 else
        $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
        $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+       $1[]_INCLUDEDIR=$pkg_cv_[]$1[]_INCLUDEDIR
+
+       $1[]_CPPFLAGS=""
+       for flag in $$1[]_CFLAGS; do
+         case $flag in
+          -I* | -D* | -U*) $1[]_CPPFLAGS="$$1[]_CPPFLAGS $flag" ;;
+          esac
+        done
+       pkg_cv_[]$1[]_CPPFLAGS=$$1[]_CPPFLAGS
+       AC_SUBST($1[]_CPPFLAGS)
+
         AC_MSG_RESULT([yes])
        ifelse([$3], , :, [$3])
 fi[]dnl