[cig-commits] r12849 - in cs/cigma/trunk/build: . m4

[luis at geodynamics.org]

Author: luis
Date: 2008-09-10 12:50:51 -0700 (Wed, 10 Sep 2008)
New Revision: 12849

Added:
   cs/cigma/trunk/build/m4/
   cs/cigma/trunk/build/m4/vtk.m4
Log:
Autoconf functions for detecting & configuring VTK library



Added: cs/cigma/trunk/build/m4/vtk.m4
===================================================================
--- cs/cigma/trunk/build/m4/vtk.m4	                        (rev 0)
+++ cs/cigma/trunk/build/m4/vtk.m4	2008-09-10 19:50:51 UTC (rev 12849)
@@ -0,0 +1,157 @@
+##############################################################################
+# -*- Autoconf -*-
+# 
+# Implements the AM_OPTIONS_VTK and AM_PATH_VTK macros.
+# The AM_OPTIONS_VTK macro adds the --with-vtk=path option,
+# and the AM_PATH_VTK macro is used to detect VTK presence,
+# location and version.
+#
+# Modified from http://www.vtk.org/Wiki/VTK_Autoconf
+# Originally by Francesco Montorsi
+#
+
+
+##############################################################################
+#
+# AM_OPTIONS_VTK
+#
+# Adds the --with-vtk=PATH option to the configure options
+#
+AC_DEFUN([AM_OPTIONS_VTK],[
+    AC_ARG_WITH([vtk],
+                [AC_HELP_STRING(
+                    [--with-vtk],
+                    [The prefix where VTK is installed (default is /usr/local)])],
+                [with_vtk=$withval],
+                [with_vtk="/usr/local"])
+    AC_ARG_WITH([vtk-version],
+                [AC_HELP_STRING(
+                    [--with-vtk-version],
+                    [VTK's include directory name is vtk-suffix, e.g., vtk-5.0/.
+                     What's the suffix? (Default -5.0)])],
+                [vtk_suffix=$withval],
+                [vtk_suffix="-5.0"])
+])
+
+##############################################################################
+#
+# AM_PATH_VTK([minimum-version], [action-if-found], [action-if-not-found])
+# 
+# NOTE: [minimum-version] must be in the form [X.Y.Z]
+#
+AC_DEFUN([AM_PATH_VTK],[
+
+    dnl do we want to check for VTK?
+    if [[ $with_vtk = "yes" ]]; then
+        dnl in case user wrote --with-vtk=yes
+        with_vtk="/usr/local"
+    fi
+
+    if [[ $with_vtk != "no" ]]; then
+        
+        VTK_PREFIX="$with_vtk"
+
+        AC_CHECK_FILE([$VTK_PREFIX/include/vtk$vtk_suffix/vtkCommonInstantiator.h],
+                      [vtkFound="OK"])
+        AC_MSG_CHECKING([if VTK is installed in $VTK_PREFIX])
+
+        if [[ -z "$vtkFound" ]]; then
+
+            dnl VTK not found!
+            AC_MSG_RESULT([no])
+            $3
+
+        else
+
+            dnl VTK found!
+            AC_MSG_RESULT([yes])
+
+            dnl these are the VTK libraries of a default build
+            VTK_LIBS="-lvtkCommon -lvtkFiltering"
+
+            dnl set VTK c,cpp,ld flags
+            VTK_CFLAGS="-I$VTK_PREFIX/include/vtk$vtk_suffix"
+            VTK_CXXFLAGS="$VTK_CFLAGS"
+            VTK_LDFLAGS="-L$VTK_PREFIX/lib/vtk $VTK_LIBS"
+
+            dnl now, eventually check version
+            if [[ -n "$1" ]]; then
+                
+                dnl the version of VTK we need
+                maj=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+                min=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+                rel=`echo $1 | sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+                AC_MSG_CHECKING([if VTK version is at least $maj.$min.$rel])
+
+                dnl in order to be able to compile the following test program,
+                dnl we need to add to the current flags, the VTK settings...
+                OLD_CFLAGS=$CFLAGS
+                OLD_CXXFLAGS=$CXXFLAGS
+                OLD_LDFLAGS=$LDFLAGS
+                CFLAGS="$VTK_CFLAGS $CFLAGS"
+                CXXFLAGS="$VTK_CXXFLAGS $CXXFLAGS"
+                LDFLAGS="$VTK_LDFLAGS $LDFLAGS"
+
+                dnl check if the installed VTK is greater or not
+                AC_COMPILE_IFELSE([
+                    AC_LANG_PROGRAM([
+                        #include <vtk/vtkConfigure.h>
+                        #include <stdio.h>
+                        ],[
+                        printf("VTK version is: %d.%d.%d",
+                               VTK_MAJOR_VERSION,
+                               VTK_MINOR_VERSION,
+                               VTK_BUILD_VERSION);
+
+                        #if VTK_MAJOR_VERSION < $maj
+                        #error Installed VTK is too old!
+                        #endif
+
+                        #if VTK_MINOR_VERSION < $min
+                        #error Installed VTK is too old!
+                        #endif
+
+                        #if VTK_BUILD_VERSION < $rel
+                        #error Installed VTK is too old!
+                        #endif
+                    ])
+                ], [vtkVersion="OK"])
+
+                if [[ "$vtkVersion" = "OK" ]]; then
+
+                    AC_MSG_RESULT([yes])
+
+                    $2
+
+                else
+
+                    AC_MSG_RESULT([no])
+
+                    dnl restore all flags without VTK values
+                    CFLAGS=$OLD_CFLAGS
+                    CXXFLAGS=$OLD_CXXFLAGS
+                    LDFLAGS=$OLD_LDFLAGS
+
+                    $3
+                fi              # if [[ $vtkVersion = "OK ]];
+
+            else
+
+                dnl if we don't ahve to check for minimum version
+                dnl (because the user did not set that option),
+                dnl then we can execute here the block action-if-found
+                CFLAGS="$VTK_CFLAGS $CFLAGS"
+                CXXFLAGS="$VTK_CXXFLAGS $CXXFLAGS"
+                LDFLAGS="$VTK_LDFLAGS $LDFLAGS"
+                
+                $2
+
+            fi          #if [[ -n "$1" ]];
+
+        fi          # if [[ -z "$vtkFound" ]];
+    fi          # $with_vtk != "no"
+])
+
+
+
+# vim: syntax=config