Changeset 1060 for trunk/configure.ac

Timestamp:

Feb 8, 2008, 11:51:34 PM (16 years ago)

Author:

Jari Häkkinen

Message:

Fixes #280

File:

• trunk/configure.ac (modified) (6 diffs)

trunk/configure.ac

@@ -6 +6 @@
 # Copyright (C) 2004 Jari Häkkinen
 # Copyright (C) 2005, 2006, 2007 Jari Häkkinen, Peter Johansson
+# Copyright (C) 2008 Jari Häkkinen
 #
 # This file is part of the yat library, http://trac.thep.lu.se/yat
@@ -58 +59 @@
 # generated cblas, and 3) fall back to GSL cblas implementation. If
 # partial ATLAS is detected the configure script fails.
-AC_SEARCH_LIBS(cblas_sdsdot,cblas,,
-  AC_SEARCH_LIBS(ATL_sdsdot,atlas,
-    AC_SEARCH_LIBS(cblas_sdsdot,cblas,[CXXFLAGS="$CXXFLAGS -m64" LDFLAGS="$LDFLAGS -m64"],
-      AC_MSG_ERROR(partial ATLAS library detected!),-m64),
-                            AC_SEARCH_LIBS(cblas_dswap,gslcblas),-m64),)
-AC_CHECK_LIB(gsl,main)
+cblas_found="no"  # cblas_found may get values yes or no
+# atlas_found may get values yes, no, or partial. In some cases
+# partial atlas may be installed
+atlas_found="no"
+gslcblas_found="no" # gslcblas_found may get values yes or no
+AC_SEARCH_LIBS(cblas_sdsdot,cblas,cblas_found="yes",
+  AC_SEARCH_LIBS(ATL_sdsdot,atlas,
+    AC_SEARCH_LIBS(cblas_sdsdot,cblas,atlas_found="yes",
+                   atlas_found="partial",-m64),
+      AC_SEARCH_LIBS(cblas_dswap,gslcblas,gslcblas_found="yes"),-m64),)
+if test ${atlas_found} = "yes"; then
+  CXXFLAGS="$CXXFLAGS -m64" LDFLAGS="$LDFLAGS -m64"
+fi
 
 # GNU Scientific Library, GSL http://www.gnu.org/software/gsl/, checks
 # Including AM_PATH_GSL macro from gsl.m4 distributed by GSL
+gsl_found="no"
+gsl_version="1.6"
 sinclude(./build_support/gsl.m4)
-AM_PATH_GSL(1.6,,[AC_MSG_ERROR(could not find required version of GSL)])
+AM_PATH_GSL(${gsl_version},gsl_found="yes",gsl_version_check="no")
+if test "$gsl_found" = "yes"; then
+  # Needed to set -lgsl
+  AC_CHECK_LIB(gsl,main)
+fi
 
 # Checks for header files.
@@ -109 +123 @@
   [quiet_nan=no])
 AC_MSG_RESULT($quiet_nan)
-if test "${quiet_nan}" = "no" ; then
-  AC_MSG_FAILURE([
-    Support for quiet NAN required.
-    Yat will not work on this system!])
-fi
 # At run-time, but this has the disadvantage that yat cannot be built  
 # for cross-compilation
@@ -124 +133 @@
   [quiet_nan=no])
 AC_MSG_RESULT($quiet_nan)
-if test "${quiet_nan}" = "no" ; then
-  AC_MSG_FAILURE([
-    Support for quiet NAN required.
-    Yat will not work on this system!])
-fi
 
 # yat specific settings
@@ -147 +151 @@
      yat/utility/Makefile])
 
-AC_OUTPUT
-
 # Only warning about missing programs (needed for docs generation)
 # when in debug mode
 if (test "$enable_debug" == "yes"); then
-   if (test "$HAVE_DOXYGEN" != "true") ; then
-      AC_MSG_WARN([Doxygen was not found. Yat will compile and work
-  without doxygen.  However, in order to enable 
-  generation of documentation, please install doxygen 
-  available at http://www.doxygen.org/])
-   fi        
-   if (test "$HAVE_LATEX" != "true") ; then
-      AC_MSG_WARN([latex was not found. Yat will compile and work
-  without latex. However, supporting documentation on 
-  statistics used in yat cannot be generated without 
-  latex.])
-   fi        
-   if (test "$HAVE_DVIPDFM" != "true") ; then
-      AC_MSG_WARN([dvipdfm was not found. Yat will compile and work
-  without dvipdfm. However, pdf document on statistics 
-  used in yat cannot be generated without dvipdfm.])
-   fi        
-   if (test "$HAVE_LATEX2HTML" != "true") ; then
-      AC_MSG_WARN([latex2html was not found. Yat will compile and work
-  without Latex. However, html document on statistics 
-  used in yat cannot be generated without latex.])
-   fi        
-fi
+if (test "$HAVE_DOXYGEN" != "true") ; then
+  AC_MSG_WARN([
+  Doxygen was not found. Yat will compile and work without doxygen.
+  However, in order to enable generation of documentation, please
+  install doxygen available at http://www.doxygen.org/
+  ])
+fi
+if (test "$HAVE_LATEX" != "true") ; then
+  AC_MSG_WARN([
+  latex was not found. Yat will compile and work without latex.
+  However, supporting documentation on statistics used in yat
+  cannot be generated without latex.
+  ])
+fi
+if (test "$HAVE_DVIPDFM" != "true") ; then
+  AC_MSG_WARN([
+  dvipdfm was not found. Yat will compile and work without dvipdfm.
+  However, pdf document on statistics used in yat cannot be
+  generated without dvipdfm.
+  ])
+fi
+if (test "$HAVE_LATEX2HTML" != "true") ; then
+  AC_MSG_WARN([
+  latex2html was not found. Yat will compile and work without
+  latex. However, html document on statistics used in yat cannot
+  be generated without latex.
+  ])
+fi
+fi
+
+# Print failure status information about selected items, and exit if
+# fatal errors were encountered. No output will be created if
+# configure is halted prematurely.
+
+# used to trigger exit before creation of output
+all_reqs_ok="true"
+
+# No support for quiet NAN is fatal -- sub-sequent compilation, or execution
+# of created binary, will fail.
+if test "${quiet_nan}" = "no" ; then
+  all_reqs_ok="false"
+  AC_MSG_WARN([
+  Support for quiet NAN required.
+  Yat will not work on this system!])
+fi
+
+# Non-existing BLAS is fatal -- sub-sequent compilation will fail.
+if test "${cblas_found}" = "no" -a "${atlas_found}" = "no" -a "${gslcblas_found}" = "no"; then
+  all_reqs_ok="false"
+  AC_MSG_WARN([
+  cBLAS not found. The C implementation of Basic Linear Algebra
+  Subprograms (cBLAS) library cannot be found. Please make sure
+  cBLAS is installed.])
+fi
+if test "${atlas_found}" = "partial"; then
+  all_reqs_ok="false"
+  AC_MSG_WARN([
+  Partial ATLAS BLAS library found. Please repair your installation.])
+fi
+
+# Non-existing GSL is fatal -- sub-sequent compilation will fail.
+if test "${gsl_found}" = "no" ; then
+  all_reqs_ok="false"
+  if test "${gsl_version_check}" = "no" ; then
+  AC_MSG_WARN([
+  GSL found but not the required version. Please install
+  GSL version ${gsl_version} or later])
+  else
+  AC_MSG_WARN([
+  GSL not found. The GNU Scientific Library (GSL) library cannot be
+  found. Please make sure GSL is installed.])
+  fi
+fi
+
+if (test "$all_reqs_ok" = "false") ; then
+  AC_MSG_FAILURE([
+  Some pre-requisites were not fulfilled, aborting configure.
+  Please consult the 'README' file for more information about what
+  is needed to compile yat and refer to above warning messages.
+  Needed files were NOT created.])
+fi
+
+# Create output.
+AC_OUTPUT
 
 # Some more messages.
@@ -187 +250 @@
 AC_MSG_NOTICE([ +++++++++++++++++++++++++++++++++++++++++++++++])
 AC_MSG_NOTICE([])
+if test "${gslcblas_found}" = "yes"; then
+AC_MSG_NOTICE([ GSL BLAS found. This is a reference implementation only.])
+AC_MSG_NOTICE([ Consider using hardware optimized BLAS.])
+AC_MSG_NOTICE([ ATLAS (http://math-atlas.sourceforge.net/) provides an])
+AC_MSG_NOTICE([ optimized BLAS library. It is supported by yat!])
+AC_MSG_NOTICE([])
+fi
 AC_MSG_NOTICE([ Now type 'make ; make check'.])