From 7d5045f287e28e4ff5d83b3d864ee4032086cb17 Mon Sep 17 00:00:00 2001
From: nge <nge>
Date: Thu, 17 Sep 2009 16:24:09 +0000
Subject: [PATCH] Adding support for native products of recent Linux Distribs :
 - Debian Sid (Sep 2009) - (K)Ubuntu 9.04

---
 adm_local/unix/config_files/check_qwt.m4 | 27 +++++++++++++++++-------
 1 file changed, 19 insertions(+), 8 deletions(-)

diff --git a/adm_local/unix/config_files/check_qwt.m4 b/adm_local/unix/config_files/check_qwt.m4
index c62506993..d80642511 100644
--- a/adm_local/unix/config_files/check_qwt.m4
+++ b/adm_local/unix/config_files/check_qwt.m4
@@ -44,15 +44,23 @@ AC_ARG_WITH(qwt_inc,
       AC_MSG_RESULT("select $withval as path to QWT includes")
     ])
 
+libqwt_name=qwt
 if test -z $QWTHOME; then
   AC_MSG_RESULT(QWTHOME not defined)
   exist_ok=no	
   if test "x$exist_ok" = "xno"; then
-     for d in /usr/local /usr ; do
-        AC_CHECK_FILE(${d}/lib${LIB_LOCATION_SUFFIX}/libqwt.so,exist_ok=yes,exist_ok=no)
+     for d in /usr /usr/local ; do
+        for extension in qwt qwt-qt4; do
+           AC_CHECK_FILE(${d}/lib${LIB_LOCATION_SUFFIX}/lib${extension}.so,exist_ok=yes,exist_ok=no)
+           if test "x$exist_ok" = "xyes"; then
+              QWTHOME=$d
+              AC_MSG_RESULT(lib${extension}.so detected in $d/lib)
+              libqwt_name=${extension}
+              dnl  No break here, libqwt-qt4.so is choosen even if libqwt.so is present: if 2 are present, in most of cases, libqwt.so is Qt3 version.
+           fi
+        done
         if test "x$exist_ok" = "xyes"; then
-           QWTHOME=$d
-           AC_MSG_RESULT(libqwt.so detected in $d/lib)
+           break
         fi
      done
   fi
@@ -76,6 +84,9 @@ if test -z $QWTHOME; then
         if test ! -f $QWT_INCDIR/qwt.h ; then
           QWT_INCDIR=/usr/lib/qt4/include/qwt
         fi
+        if test ! -f $QWT_INCDIR/qwt.h ; then
+          QWT_INCDIR=/usr/include/qwt-qt4
+        fi
      fi
   else
      qwt_ok=no
@@ -116,9 +127,9 @@ else
     LIBS_old=$LIBS
     LIBS="$LIBS $QT_LIBS"
     if test "x$QWTHOME" = "x/usr" ; then
-      LIBS="$LIBS -lqwt"
+      LIBS="$LIBS -l${libqwt_name}"
     else
-      LIBS="$LIBS -L$QWTHOME/lib -lqwt"
+      LIBS="$LIBS -L$QWTHOME/lib -l${libqwt_name}"
     fi
 
     CXXFLAGS_old=$CXXFLAGS
@@ -145,9 +156,9 @@ else
     else
       AC_MSG_RESULT(yes)
       if test "x$QWTHOME" = "x/usr" ; then
-        QWT_LIBS=" -lqwt"
+        QWT_LIBS=" -l${libqwt_name}"
       else
-        QWT_LIBS="-L$QWTHOME/lib -lqwt"
+        QWT_LIBS="-L$QWTHOME/lib -l${libqwt_name}"
       fi
     fi
 
-- 
2.39.2