grads (2.0.a9-4) asneeded.patch

Descripion: Use --as-needed to remove unnecesary linking.
Author: Alastair McKinstry <mckinstry@debian.org>
Forwared: no

Index: grads/aclocal.m4
===================================================================
--- grads.orig/aclocal.m4	2009-10-01 19:48:57.000000000 +0100
+++ grads/aclocal.m4	2009-10-01 19:49:18.000000000 +0100
@@ -636,4 +636,5 @@
 m4_include([m4/netcdf_header.m4])
 m4_include([m4/pkg.m4])
 m4_include([m4/udunits.m4])
+m4_include([m4/as-needed.m4])
 m4_include([acinclude.m4])
Index: grads/configure.ac
===================================================================
--- grads.orig/configure.ac	2009-10-01 19:49:49.000000000 +0100
+++ grads/configure.ac	2009-10-01 19:50:05.000000000 +0100
@@ -909,6 +909,8 @@
 mkdir -p src
 echo "static char *buildinfo = \"${build_info}\";" > src/buildinfo.h
 
+LINK_AS_NEEDED
+
 AC_CONFIG_FILES([Makefile src/Makefile])
 AC_OUTPUT
 
Index: grads/m4/as-needed.m4
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ grads/m4/as-needed.m4	2009-10-01 19:48:27.000000000 +0100
@@ -0,0 +1,67 @@
+dnl ./configure support for linking with option --as-needed
+dnl Copyright (C) 2008 Werner Pantke <wpantke@punk-ass-bitch.org>
+dnl
+dnl This program is free software: you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation, either version 3 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
+dnl
+
+
+# --------------------------------------------------------------------------
+# Check whether the C++ compiler accepts a certain flag,
+# if it does, the flag is added to LDFLAGS.
+# Usage:
+#   LF_CHECK_LD_FLAG([-flag1 -flag2 -flag3 ...])
+# -------------------------------------------------------------------------
+
+AC_DEFUN([LF_CHECK_LD_FLAG],[
+  echo 'int main(int argc, char **argv){return 0;}' > conftest.temp.cc
+  for i in $1
+  do
+    AC_MSG_CHECKING([whether $CXX accepts $i])
+    if test -z "`${CXX} -c conftest.temp.cc 2>&1`" \
+          && test -z "`${CXX} $i -o conftest.temp conftest.temp.o 2>&1`"
+    then
+      LDFLAGS="${LDFLAGS} $i"
+      AC_MSG_RESULT(yes)
+    else
+      AC_MSG_RESULT(no)
+    fi
+  done
+  rm -f conftest.temp.cc conftest.temp.o conftest.temp
+])
+
+
+# ----------------------------------------------------------------------
+# Provide the configure script with an --enable/disable-link-as-needed option
+# that turns the --as-needed linking flag on/off. Default is: enabled.
+# Call this command AFTER you have configured ALL your compilers. 
+# ----------------------------------------------------------------------
+
+AC_DEFUN([LINK_AS_NEEDED],[
+  dnl Check for --with-link-as-needed
+  AC_MSG_CHECKING([whether user wants to link with --as-needed])
+  AC_ARG_ENABLE(link-as-needed,
+        [AC_HELP_STRING([--disable-link-as-needed],
+              [Turn off linker flag --as-needed]) ],
+        [link_as_needed=$enableval], [link_as_needed=yes])
+  AC_MSG_RESULT($link_as_needed)
+  
+  if test $link_as_needed = yes
+  then
+    if test -n "${CXX}" 
+    then
+      LF_CHECK_LD_FLAG([-Wl,--as-needed])
+    fi
+  fi
+])
+