From 9be0db743a6cf13713f7ff7c4560117a63de771d Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Fri, 19 Dec 2008 05:29:05 +0000
Subject: [PATCH] Issue 20080: replace error by warning message if the
 distene/blsurf mesher is not found.

---
 adm_local/unix/config_files/check_BLSURF.m4 | 68 ++++++++++-----------
 1 file changed, 33 insertions(+), 35 deletions(-)

diff --git a/adm_local/unix/config_files/check_BLSURF.m4 b/adm_local/unix/config_files/check_BLSURF.m4
index 264bfd2..cfe354a 100644
--- a/adm_local/unix/config_files/check_BLSURF.m4
+++ b/adm_local/unix/config_files/check_BLSURF.m4
@@ -37,69 +37,67 @@ AC_ARG_WITH(blsurf,
 
 BLSURF_ok=no
 
-if test "$with_blsurf" == "no" ; then
-    AC_MSG_FAILURE(Cannot build without BLSURF)
-elif test "$with_blsurf" == "yes" || test "$with_blsurf" == "auto"; then
+if test "$with_blsurf" != "no" ; then
+  if test "$with_blsurf" == "yes" || test "$with_blsurf" == "auto"; then
     BLSURF_HOME=""
-else
+  else
     BLSURF_HOME="$with_blsurf"
-fi
+  fi
 
-if test "$BLSURF_HOME" == "" ; then
+  if test "$BLSURF_HOME" == "" ; then
     if test "x$BLSURFHOME" != "x" ; then
-        BLSURF_HOME=$BLSURFHOME
-    else
-        AC_MSG_FAILURE(Cannot build without BLSURF. Use --with-blsurf option to define BLSURF installation.)
+      BLSURF_HOME=$BLSURFHOME
     fi
-fi
+  fi
 
-if test "x$BLSURF_HOME" != "x"; then
+  if test "x$BLSURF_HOME" != "x"; then
 
-  echo
-  echo -------------------------------------------------
-  echo You are about to choose to use somehow the
-  echo BLSURF commercial product to generate 2D mesh.
-  echo
+    echo
+    echo -------------------------------------------------
+    echo You are about to choose to use somehow the
+    echo BLSURF commercial product to generate 2D mesh.
+    echo
 
-  BLSURF_INCLUDES="-I$BLSURF_HOME/include"
-  BLSURF_LIBS="-L$BLSURF_HOME/lib -lBLSurf"
+    BLSURF_INCLUDES="-I$BLSURF_HOME/include"
+    BLSURF_LIBS="-L$BLSURF_HOME/lib -lBLSurf"
 
-  CPPFLAGS_old="$CPPFLAGS"
-  CXXFLAGS_old="$CXXFLAGS"
-  CPPFLAGS="$BLSURF_INCLUDES $CPPFLAGS"
-  CXXFLAGS="$BLSURF_INCLUDES $CXXFLAGS"
+    CPPFLAGS_old="$CPPFLAGS"
+    CXXFLAGS_old="$CXXFLAGS"
+    CPPFLAGS="$BLSURF_INCLUDES $CPPFLAGS"
+    CXXFLAGS="$BLSURF_INCLUDES $CXXFLAGS"
 
-  AC_MSG_CHECKING(for BLSURF header file)
+    AC_MSG_CHECKING(for BLSURF header file)
 
-  AC_CHECK_HEADER(distene/api.h,BLSURF_ok=yes,BLSURF_ok=no)
+    AC_CHECK_HEADER(distene/api.h,BLSURF_ok=yes,BLSURF_ok=no)
 
-  if test "x$BLSURF_ok" == "xyes"; then
+    if test "x$BLSURF_ok" == "xyes"; then
 
-    AC_MSG_CHECKING(for BLSURF library)
+      AC_MSG_CHECKING(for BLSURF library)
 
-    LDFLAGS_old="$LDFLAGS"
-    LDFLAGS="-L. -$BLSURF_LIBS $LDFLAGS"
+      LDFLAGS_old="$LDFLAGS"
+      LDFLAGS="-L. -$BLSURF_LIBS $LDFLAGS"
 
-    AC_TRY_LINK(
+      AC_TRY_LINK(
 	#include "distene/api.h",
 	BLSURF_init();,
 	BLSURF_ok=yes,BLSURF_ok=no
 	)
 
-    LDFLAGS="$LDFLAGS_old"
+      LDFLAGS="$LDFLAGS_old"
 
-    AC_MSG_RESULT($BLSURF_ok)
-  fi
+      AC_MSG_RESULT($BLSURF_ok)
+    fi
 
-  CPPFLAGS="$CPPFLAGS_old"
-  CXXFLAGS="$CXXFLAGS_old"
+    CPPFLAGS="$CPPFLAGS_old"
+    CXXFLAGS="$CXXFLAGS_old"
 
+  fi
 fi
 
 if test "x$BLSURF_ok" == xno ; then
   AC_MSG_RESULT(for BLSURF: no)
   AC_MSG_WARN(BLSURF includes or libraries are not found or are not properly installed)
-  AC_MSG_FAILURE(Cannot build without BLSURF. Use --with-blsurf option to define BLSURF installation.)
+  AC_MSG_WARN(Cannot build without BLSURF. Use --with-blsurf option to define BLSURF installation.)
 else
   AC_MSG_RESULT(for BLSURF: yes)
 fi
-- 
2.39.2