# Find the Qwt 5.x includes and library, either the version linked to Qt3 or the version linked to Qt4 # # On Windows it makes these assumptions: # - the Qwt DLL is where the other DLLs for Qt are (QT_DIRbin) or in the path # - the Qwt .h files are in QT_DIRincludeQwt or in the path # - the Qwt .lib is where the other LIBs for Qt are (QT_DIRlib) or in the path # # Qwt5_INCLUDE_DIR - where to find qwt.h if Qwt # Qwt5_Qt4_LIBRARY - The Qwt5 library linked against Qt4 (if it exists) # Qwt5_Qt3_LIBRARY - The Qwt5 library linked against Qt4 (if it exists) # Qwt5_Qt4_FOUND - Qwt5 was found and uses Qt4 # Qwt5_Qt3_FOUND - Qwt5 was found and uses Qt3 # Qwt5_FOUND - Set to TRUE if Qwt5 was found (linked either to Qt3 or Qt4)

# Copyright © 2007, Pau Garcia i Quiles, <pgquiles@elpauer.org> # # Redistribution and use is allowed according to the terms of the BSD license. # For details see the accompanying COPYING-CMAKE-SCRIPTS file.

# Condition is “(A OR B) AND C”, CMake does not support parentheses but it evaluates left to right IF(Qwt5_Qt4_LIBRARY OR Qwt5_Qt3_LIBRARY AND Qwt5_INCLUDE_DIR)

SET(Qwt5_FIND_QUIETLY TRUE)

ENDIF(Qwt5_Qt4_LIBRARY OR Qwt5_Qt3_LIBRARY AND Qwt5_INCLUDE_DIR)

IF(NOT QT4_FOUND)

FIND_PACKAGE( Qt4 REQUIRED QUIET )

ENDIF(NOT QT4_FOUND)

IF( QT4_FOUND )

# Is Qwt5 installed? Look for header files
FIND_PATH( Qwt5_INCLUDE_DIR qwt.h 
       PATHS ${QT_INCLUDE_DIR} /usr/local/qwt/include /usr/include/qwt
       PATH_SUFFIXES qwt qwt5 qwt-qt4 qwt5-qt4 qwt-qt3 qwt5-qt3 include qwt/include qwt5/include qwt-qt4/include qwt5-qt4/include qwt-qt3/include qwt5-qt3/include ENV PATH)

# Find Qwt version
IF( Qwt5_INCLUDE_DIR )
        FILE( READ ${Qwt5_INCLUDE_DIR}/qwt_global.h QWT_GLOBAL_H )
        STRING( REGEX MATCH "#define *QWT_VERSION *(0x05*)" QWT_IS_VERSION_5 ${QWT_GLOBAL_H})

        IF( QWT_IS_VERSION_5 )
        STRING(REGEX REPLACE ".*#define[\\t\\ ]+QWT_VERSION_STR[\\t\\ ]+\"([0-9]+\\.[0-9]+\\.[0-9]+)\".*" "\\1" Qwt_VERSION "${QWT_GLOBAL_H}")

        # Find Qwt5 library linked to Qt4
        FIND_LIBRARY( Qwt5_Qt4_TENTATIVE_LIBRARY NAMES qwt5-qt4 qwt-qt4 qwt5 qwt PATHS /usr/local/qwt/lib /usr/local/lib /usr/lib ${QT_LIBRARY_DIR})
        IF( UNIX AND NOT CYGWIN)
                IF( Qwt5_Qt4_TENTATIVE_LIBRARY )
                        #MESSAGE("Qwt5_Qt4_TENTATIVE_LIBRARY = ${Qwt5_Qt4_TENTATIVE_LIBRARY}")
                        EXECUTE_PROCESS( COMMAND "ldd" ${Qwt5_Qt4_TENTATIVE_LIBRARY} OUTPUT_VARIABLE Qwt_Qt4_LIBRARIES_LINKED_TO )
                        STRING( REGEX MATCH "QtCore" Qwt5_IS_LINKED_TO_Qt4 ${Qwt_Qt4_LIBRARIES_LINKED_TO})
                        IF( Qwt5_IS_LINKED_TO_Qt4 )
                                SET( Qwt5_Qt4_LIBRARY ${Qwt5_Qt4_TENTATIVE_LIBRARY} )
                                SET( Qwt5_Qt4_FOUND TRUE )
                                IF (NOT Qwt5_FIND_QUIETLY)
                                        MESSAGE( STATUS "Found Qwt: ${Qwt5_Qt4_LIBRARY}" )
                                ENDIF (NOT Qwt5_FIND_QUIETLY)
                        ENDIF( Qwt5_IS_LINKED_TO_Qt4 )
                ENDIF( Qwt5_Qt4_TENTATIVE_LIBRARY )
        ELSE( UNIX AND NOT CYGWIN)
        # Assumes qwt.dll is in the Qt dir
                SET( Qwt5_Qt4_LIBRARY ${Qwt5_Qt4_TENTATIVE_LIBRARY} )
                SET( Qwt5_Qt4_FOUND TRUE )
                IF (NOT Qwt5_FIND_QUIETLY)
                        MESSAGE( STATUS "Found Qwt version ${Qwt_VERSION} linked to Qt4" )
                ENDIF (NOT Qwt5_FIND_QUIETLY)
        ENDIF( UNIX AND NOT CYGWIN)

        # Find Qwt5 library linked to Qt3
        FIND_LIBRARY( Qwt5_Qt3_TENTATIVE_LIBRARY NAMES qwt-qt3 qwt qwt5-qt3 qwt5 )
        IF( UNIX AND NOT CYGWIN)
                IF( Qwt5_Qt3_TENTATIVE_LIBRARY )
                        #MESSAGE("Qwt5_Qt3_TENTATIVE_LIBRARY = ${Qwt5_Qt3_TENTATIVE_LIBRARY}")
                        EXECUTE_PROCESS( COMMAND "ldd" ${Qwt5_Qt3_TENTATIVE_LIBRARY} OUTPUT_VARIABLE Qwt-Qt3_LIBRARIES_LINKED_TO )
                        STRING( REGEX MATCH "qt-mt" Qwt5_IS_LINKED_TO_Qt3 ${Qwt-Qt3_LIBRARIES_LINKED_TO})
                        IF( Qwt5_IS_LINKED_TO_Qt3 )
                                SET( Qwt5_Qt3_LIBRARY ${Qwt5_Qt3_TENTATIVE_LIBRARY} )
                                SET( Qwt5_Qt3_FOUND TRUE )
                                IF (NOT Qwt5_FIND_QUIETLY)
                                        MESSAGE( STATUS "Found Qwt version ${Qwt_VERSION} linked to Qt3" )
                                ENDIF (NOT Qwt5_FIND_QUIETLY)
                        ENDIF( Qwt5_IS_LINKED_TO_Qt3 )
                ENDIF( Qwt5_Qt3_TENTATIVE_LIBRARY )
        ELSE( UNIX AND NOT CYGWIN)
                SET( Qwt5_Qt3_LIBRARY ${Qwt5_Qt3_TENTATIVE_LIBRARY} )
                SET( Qwt5_Qt3_FOUND TRUE )
                IF (NOT Qwt5_FIND_QUIETLY)
                        MESSAGE( STATUS "Found Qwt: ${Qwt5_Qt3_LIBRARY}" )
                ENDIF (NOT Qwt5_FIND_QUIETLY)
        ENDIF( UNIX AND NOT CYGWIN)

        ENDIF( QWT_IS_VERSION_5 )

        IF( Qwt5_Qt4_FOUND OR Qwt5_Qt3_FOUND )
                SET( Qwt5_FOUND TRUE )
        ENDIF( Qwt5_Qt4_FOUND OR Qwt5_Qt3_FOUND )

        MARK_AS_ADVANCED( Qwt5_INCLUDE_DIR Qwt5_Qt4_LIBRARY Qwt5_Qt3_LIBRARY )
ENDIF( Qwt5_INCLUDE_DIR )

IF (NOT Qwt5_FOUND AND Qwt5_FIND_REQUIRED)
        MESSAGE(FATAL_ERROR "Could not find Qwt 5.x")
ENDIF (NOT Qwt5_FOUND AND Qwt5_FIND_REQUIRED)

ENDIF( QT4_FOUND )