[cig-commits] r13836 - cs/cigma/trunk/config

[luis at geodynamics.org]

Author: luis
Date: 2009-01-12 14:10:02 -0800 (Mon, 12 Jan 2009)
New Revision: 13836

Added:
   cs/cigma/trunk/config/cigma_netcdf.m4
Log:
Added autoconf macros for configuring the NetCDF library

This adds the option --with-netcdf to the configure script,
defines the NETCDF_{INCLUDES,LIBS,LDFLAGS} variables, as well
as the HAVE_NETCDF preprocessor variable. By default, we assume
the option --without-netcdf (or --with-netcdf=no). Otherwise,
if the appropriate installation prefix is specified, this autoconf
macro will search for the NetCDF C++ API and fail if it doesn't
find it.

Added: cs/cigma/trunk/config/cigma_netcdf.m4
===================================================================
--- cs/cigma/trunk/config/cigma_netcdf.m4	                        (rev 0)
+++ cs/cigma/trunk/config/cigma_netcdf.m4	2009-01-12 22:10:02 UTC (rev 13836)
@@ -0,0 +1,83 @@
+###############################################################################
+# -*- Autoconf -*-
+#
+
+#######################
+# CIGMA_OPTIONS_NETCDF
+AC_DEFUN([CIGMA_OPTIONS_NETCDF], [
+    AC_ARG_WITH([netcdf],
+        [AC_HELP_STRING([--with-netcdf],
+                        [The prefix where NetCDF is installed])],
+        [with_netcdf="$withval"],
+        [with_netcdf="no"])
+])
+
+####################
+# CIGMA_PATH_NETCDF
+AC_DEFUN([CIGMA_PATH_NETCDF], [
+    
+    if [[ $with_netcdf = "yes" ]]; then
+        dnl In case user wrote --with-netcdf=yes
+        with_netcdf="/usr"
+    fi
+
+    if [[ $with_netcdf != "no" ]]; then
+
+        NETCDF_PREFIX="$with_netcdf"
+
+        AC_CHECK_FILE([$NETCDF_PREFIX/include/netcdfcpp.h], [netcdfFound="OK"])
+        AC_MSG_CHECKING([if NetCDF is installed in $NETCDF_PREFIX])
+
+        if [[ -z "$netcdfFound" ]]; then
+
+            dnl netcdf not found!
+            AC_MSG_RESULT([no])
+            AC_MSG_ERROR([NetCDF C++ header not found; try CPPFLAGS="-I<netcdf include dir>"])
+
+        else
+
+            AC_MSG_RESULT([yes])
+
+            NETCDF_LIBS="-lnetcdf_c++ -lnetcdf"
+
+            if [[ $NETCDF_PREFIX != "/usr" ]]; then
+                NETCDF_INCLUDES="-I$NETCDF_PREFIX/include"
+                NETCDF_LDFLAGS="-L$NETCDF_PREFIX/lib $NETCDF_LIBS"
+            fi
+            
+            OLD_CXXFLAGS="$CXXFLAGS"
+            OLD_LIBS="$LIBS"
+        
+            CXXFLAGS="$NETCDF_INCLUDES"
+            LIBS="$NETCDF_LIBS"
+
+            AC_CHECK_LIB([netcdf],[main],[netcdf_lib=yes])
+            AC_CHECK_LIB([netcdf_c++],[main],[ncetcdf_cpplib=yes])
+            AC_CHECK_HEADERS([netcdfcpp.h],,AC_MSG_ERROR([NetCDF C++ header not found]))
+
+            AC_MSG_CHECKING([for NcFile in -lnetcdf_c++])
+            AC_REQUIRE_CPP
+            AC_COMPILE_IFELSE(
+                [AC_LANG_PROGRAM([[#include <netcdfcpp.h>]],
+                                 [[NcFile ncfile("filename"); ]])],
+                [AC_MSG_RESULT(yes)],
+                [AC_MSG_RESULT(no)
+                 AC_MSG_ERROR([netcdfc++ library not found; try LDFLAGS="-L<netcdf lib dir>"])
+            ])
+
+            CXXFLAGS="$OLD_CXXFLAGS"
+            LIBS="$OLD_LIBS"
+
+            dnl Define the preprocessor variable HAVE_NETCDF
+            AC_DEFINE([HAVE_NETCDF],,[define if the NetCDF library is available])
+        fi
+    fi
+
+    dnl Substitute the values of our NetCDF flags
+    AC_SUBST(NETCDF_INCLUDES)
+    AC_SUBST(NETCDF_LIBS)
+    AC_SUBST(NETCDF_LDFLAGS)
+
+])
+
+# vim: syntax=config