From 4c0053d5e791ccc56da035569f8a99f8d72d1c71 Mon Sep 17 00:00:00 2001
From: hbruintjes <h.bruintjes@cs.rwth-aachen.de>
Date: Thu, 21 Apr 2016 16:43:22 +0200
Subject: [PATCH] Make the Ginac find package more standard compliant

Former-commit-id: b6176f1d2dad8e5941493fa96ef4c23111ee9c59
---
 resources/cmake/FindGLPK.cmake  |  2 +-
 resources/cmake/FindGiNaC.cmake | 68 ++++++++++++++++++++++++---------
 2 files changed, 50 insertions(+), 20 deletions(-)

diff --git a/resources/cmake/FindGLPK.cmake b/resources/cmake/FindGLPK.cmake
index 2c2f4a5c7..4f723f4ec 100644
--- a/resources/cmake/FindGLPK.cmake
+++ b/resources/cmake/FindGLPK.cmake
@@ -39,7 +39,7 @@ elseif(GLPK_INCLUDE_DIR AND EXISTS "${GLPK_INCLUDE_DIR}/glpk.h")
     unset(glpk_minor_version)
 endif()
 
-# handle the QUIETLY and REQUIRED arguments and set LIBXML2_FOUND to TRUE if
+# handle the QUIETLY and REQUIRED arguments and set GLPK_FOUND to TRUE if
 # all listed variables are TRUE
 include(FindPackageHandleStandardArgs)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLPK
diff --git a/resources/cmake/FindGiNaC.cmake b/resources/cmake/FindGiNaC.cmake
index abea0e59b..13e8ea59e 100644
--- a/resources/cmake/FindGiNaC.cmake
+++ b/resources/cmake/FindGiNaC.cmake
@@ -1,24 +1,54 @@
-set( GINAC_FOUND FALSE )
+# - Try to find libginac
+# Once done this will define
+#  GINAC_FOUND - System has ginac
+#  GINAC_INCLUDE_DIR - The ginac include directory
+#  GINAC_LIBRARIES - The libraries needed to use ginac
+#  GINAC_VERSION_STRING - The version of ginac ("major.minor.micro")
 
-find_path( GINAC_INCLUDE_DIR ginac.h
-           /usr/include/ginac
-           /usr/local/include/ginac
-           /opt/local/include/ginac
-           $ENV{UNITTESTXX_PATH}/src
-           $ENV{UNITTESTXX_INCLUDE_PATH} )
+# use pkg-config to get the directories and then use these values
+# in the find_path() and find_library() calls
+find_package(PkgConfig QUIET)
+PKG_CHECK_MODULES(PC_GINAC QUIET ginac)
 
-find_library( GINAC_LIBRARIES NAMES ginac PATHS 
-              /usr/lib 
-              /usr/local/lib 
-              /opt/local/lib 
-              $ENV{UNITTESTXX_PATH} 
-              ENV{UNITTESTXX_LIBRARY_PATH} )
+find_path(GINAC_INCLUDE_DIR NAMES ginac.h
+   HINTS
+   ${PC_GINAC_INCLUDEDIR}
+   ${PC_GINAC_INCLUDE_DIRS}
+   PATH_SUFFIXES ginac
+   )
 
-if( GINAC_INCLUDE_DIR AND GINAC_LIBRARIES )
-        SET( GINAC_FOUND TRUE )
-ENDIF (GINAC_INCLUDE_DIR AND GINAC_LIBRARIES)
+find_library(GINAC_LIBRARIES NAMES ginac
+   HINTS
+   ${PC_GINAC_LIBDIR}
+   ${PC_GINAC_LIBRARY_DIRS}
+   )
 
+if(PC_GINAC_VERSION)
+    set(GINAC_VERSION_STRING ${PC_GINAC_VERSION})
+elseif(GINAC_INCLUDE_DIR AND EXISTS "${GINAC_INCLUDE_DIR}/ginac.h")
+    file(STRINGS "${GINAC_INCLUDE_DIR}/ginac.h" ginac_major_version
+         REGEX "^#define[\t ]+GINACLIB_MAJOR_VERSION[\t ]+.+")
+    file(STRINGS "${GINAC_INCLUDE_DIR}/ginac.h" ginac_minor_version
+         REGEX "^#define[\t ]+GINACLIB_MINOR_VERSION[\t ]+.+")
+    file(STRINGS "${GINAC_INCLUDE_DIR}/ginac.h" ginac_micro_version
+         REGEX "^#define[\t ]+GINACLIB_MICRO_VERSION[\t ]+.+")
+    string(REGEX REPLACE "^#define[\t ]+GINACLIB_MAJOR_VERSION[\t ]+(.+)" "\\1"
+           ginac_major_version "${ginac_major_version}")
+    string(REGEX REPLACE "^#define[\t ]+GINACLIB_MINOR_VERSION[\t ]+(.+)" "\\1"
+           ginac_minor_version "${ginac_minor_version}")
+    string(REGEX REPLACE "^#define[\t ]+GINACLIB_MICRO_VERSION[\t ]+(.+)" "\\1"
+           ginac_micro_version "${ginac_micro_version}")
+	set(GINAC_VERSION_STRING "${ginac_major_version}.${ginac_minor_version}.${ginac_micro_version}")
+    unset(ginac_major_version)
+    unset(ginac_minor_version)
+    unset(ginac_micro_version)
+endif()
 
-MARK_AS_ADVANCED (	GINAC_INCLUDE_DIR
-					GINAC_LIBRARIES
-				 )
+# handle the QUIETLY and REQUIRED arguments and set GINAC_FOUND to TRUE if
+# all listed variables are TRUE
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(GINAC
+                                  REQUIRED_VARS GINAC_LIBRARIES GINAC_INCLUDE_DIR
+                                  VERSION_VAR GINAC_VERSION_STRING)
+
+mark_as_advanced(GINAC_INCLUDE_DIR GINAC_LIBRARIES)