ENH: make FindQt default to qt3 and print a message, and add CheckQtInstalled.cmake

Modules/CheckQtInstalled.cmake

@@ -0,0 +1,94 @@
+# searches for the installed versions of QT
+# This should only be used if your project can work with both qt3 and gt4.
+# If not, you should just directly use FindQt4 or FindQt3.
+#
+# Sets QT3_INSTALLED to TRUE if qt3 is installed
+# Sets QT4_INSTALLED to TRUE if qt4 is installed
+# So, if you had a project that worked with Qt3 and Qt4, but preferred Qt3, you would do this:
+
+# INCLUDE(CMakeQtInstalled)
+# IF(Qt3_INSTALLED)
+#   INCLUDE(FindQt3)
+# ELSEIF(Qt3_INSTALLED)
+#   IF(Qt4_INSTALLED)
+#      INCLUDE(FindQt4)
+#   ENDIF(Qt4_INSTALLED)
+# ENDIF(Qt3_INSTALLED)
+
+
+
+# look for signs of qt3 installations
+FILE(GLOB GLOB_TEMP_VAR /usr/lib/qt-3*/bin/qmake)
+IF(GLOB_TEMP_VAR)
+  SET(QT3_INSTALLED TRUE)
+ENDIF(GLOB_TEMP_VAR)
+SET(GLOB_TEMP_VAR)
+
+FILE(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-3*/bin/qmake)
+IF(GLOB_TEMP_VAR)
+  SET(QT3_INSTALLED TRUE)
+ENDIF(GLOB_TEMP_VAR)
+SET(GLOB_TEMP_VAR)
+
+# look for qt4 installations
+FILE(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-4*/bin/qmake)
+IF(GLOB_TEMP_VAR)
+  SET(QT4_INSTALLED TRUE)
+ENDIF(GLOB_TEMP_VAR)
+SET(GLOB_TEMP_VAR)
+
+FILE(GLOB GLOB_TEMP_VAR /usr/local/Trolltech/Qt-4*/bin/qmake)
+IF(GLOB_TEMP_VAR)
+  SET(QT4_INSTALLED TRUE)
+ENDIF(GLOB_TEMP_VAR)
+SET(GLOB_TEMP_VAR)
+
+# now find qmake
+FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake PATHS $ENV{QTDIR}/bin)
+IF(QT_QMAKE_EXECUTABLE)
+  EXEC_PROGRAM(${QMAKE_PATH} ARGS "-query QT_VERSION"
+    OUTPUT_VARIABLE QTVERSION)
+  IF(QTVERSION MATCHES "4.*")
+    SET(QT4_INSTALLED TRUE)
+  ENDIF(QTVERSION MATCHES "4.*")
+  IF(QTVERSION MATCHES "Unknown")
+    SET(QT3_INSTALLED TRUE)
+  ENDIF(QTVERSION MATCHES "Unknown")
+ENDIF(QT_QMAKE_EXECUTABLE)
+
+IF(QT_QMAKE_EXECUTABLE)
+  EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
+    ARGS "-query QT_INSTALL_HEADERS" 
+    OUTPUT_VARIABLE qt_headers )
+ENDIF(QT_QMAKE_EXECUTABLE)
+
+FIND_FILE( QT4_QGLOBAL_H_FILE qglobal.h
+  ${qt_headers}/Qt
+  $ENV{QTDIR}/include/Qt
+  /usr/local/qt/include/Qt
+  /usr/local/include/Qt
+  /usr/lib/qt/include/Qt
+  /usr/include/Qt
+  /usr/share/qt4/include/Qt
+  C:/Progra~1/qt/include/Qt )F
+
+IF(QT4_QGLOBAL_H_FILE)
+  SET(QT4_INSTALLED TRUE)
+ENDIF(QT4_QGLOBAL_H_FILE)
+
+FIND_FILE( QT3_QGLOBAL_H_FILE qglobal.h
+  C:/Qt/3.3.3Educational/include
+  $ENV{QTDIR}/include
+  /usr/include/qt3/Qt
+  /usr/local/qt/include
+  /usr/local/include
+  /usr/lib/qt/include
+  /usr/include
+  /usr/share/qt3/include
+  C:/Progra~1/qt/include
+  /usr/include/qt3 )
+
+IF(QT3_QGLOBAL_H_FILE)
+  SET(QT3_INSTALLED TRUE)
+ENDIF(QT3_QGLOBAL_H_FILE)
+

Modules/FindQt.cmake

@@ -1,290 +1,4 @@
-# searches for the installed Qt-Version and desides which FindQtX.cmake to include
-#
-# This module uses
-# QT_MAX_VERSION                ,maximum Qt version set by YOU (e.g. "3.9.9")
-#                                       if it is not set, we assume (for compatibility) the project is old and uses Qt < 4
-#                                       Qt > 3 projects have to (!) set QT_MAX_VERSION (maximum by Trolltech is "15.7.99")
-# QT_MIN_VERSION                ,minimum Qt version set by YOU (e.g. "2.2.3")
-#
-# This modules sets
-# QT_INST_MAJOR_VERSION         ,major number of the installed Qt (e.g. Qt-Version = 4.2.6 => 4)
-# QT_INST_MINOR_VERSION         ,minor number of the installed Qt (e.g. Qt-Version = 4.2.6 => 2)
-# QT_INST_PATCH_VERSION         ,patch number of the installed Qt (e.g. Qt-Version = 4.2.6 => 6)
-#
-# QT_FOUND                      ,gets set to YES or NO depending on QT_MAX_VERSION and QT_MIN_VERSION
-
-##########################################
-#
-#     init some internal variables 
-#
-##########################################
-IF(NOT QT_FOUND)
-  SET(QT_FOUND "NO")
-ENDIF(NOT QT_FOUND)
-
-# check for qmake
-IF(NOT QT_QMAKE_EXECUTABLE)
-  FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake PATHS $ENV{QTDIR}/bin)
-ENDIF(NOT QT_QMAKE_EXECUTABLE)
-
-# compatibility to CMakeList.txt files for Qt3 projects
-IF(NOT QT_MAX_VERSION)
-  SET(QT_MAX_VERSION "3.9.9")
-ENDIF(NOT QT_MAX_VERSION)
-
-IF(NOT QT_MIN_VERSION)
-  SET(QT_MIN_VERSION "0.0.1")
-ENDIF(NOT QT_MIN_VERSION)
-
-#######################################
-#
-#       search for qglobal.h and sets
-#       QT_GLOBAL_H_FILE
-#
-#######################################
-IF( NOT QT_QGLOBAL_H_FILE) 
-  IF(QT_QMAKE_EXECUTABLE)
-    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
-      ARGS "-query QT_INSTALL_HEADERS" 
-      OUTPUT_VARIABLE qt_headers )
-  ENDIF(QT_QMAKE_EXECUTABLE)
-
-  # Qt4-like search paths
-  FIND_FILE( QT4_QGLOBAL_H_FILE qglobal.h
-    ${qt_headers}/Qt
-    $ENV{QTDIR}/include/Qt
-    /usr/local/qt/include/Qt
-    /usr/local/include/Qt
-    /usr/lib/qt/include/Qt
-    /usr/include/Qt
-    /usr/share/qt4/include/Qt
-    C:/Progra~1/qt/include/Qt )
-  
-  IF(QT4_QGLOBAL_H_FILE)
-    STRING(REGEX REPLACE "/include/Qt/qglobal.h" "" QT_DIR "${QT4_QGLOBAL_H_FILE}")
-    SET(QT_QGLOBAL_H_FILE ${QT4_QGLOBAL_H_FILE})
-  ELSE(QT4_QGLOBAL_H_FILE)
-    #Qt3-like search paths
-    FIND_FILE( QT3_QGLOBAL_H_FILE qglobal.h
-      $ENV{QTDIR}/include
-      /usr/include/qt3/Qt
-      /usr/local/qt/include
-      /usr/local/include
-      /usr/lib/qt/include
-      /usr/include
-      /usr/share/qt3/include
-      C:/Progra~1/qt/include
-      /usr/include/qt3 )
-    IF(QT3_QGLOBAL_H_FILE)
-      STRING(REGEX REPLACE "/include/qglobal.h" "" QT_DIR "${QT3_QGLOBAL_H_FILE}")
-      SET(QT_QGLOBAL_H_FILE ${QT3_QGLOBAL_H_FILE})
-    ENDIF(QT3_QGLOBAL_H_FILE)
-  ENDIF(QT4_QGLOBAL_H_FILE)
-  
-  #check if qglobal.h is just a file with includes qglobal.h from elsewhere
-  IF(QT_QGLOBAL_H_FILE)
-    FILE(READ "${QT_QGLOBAL_H_FILE}" QT_QGLOBAL_H)      
-    #BUG!!! the regexpression is not correct. 
-    #If "#include" and "qglobal.h" are in different lines it would be seen as ok
-    STRING(REGEX MATCH "#include.*qglobal.h" QT_QGLOBAL_H_LINK "${QT_QGLOBAL_H}")
-    
-    IF( QT_QGLOBAL_H_LINK )
-      STRING(REGEX REPLACE ".*\"" "" QT_QGLOBAL_H_LINK "${QT_QGLOBAL_H_LINK}")
-      STRING(REGEX REPLACE "\\.\\./\\.\\." "${QT_DIR}" QT_QGLOBAL_H_FILE "${QT_QGLOBAL_H_LINK}")
-    ENDIF(QT_QGLOBAL_H_LINK)
-  ENDIF(QT_QGLOBAL_H_FILE)
-ENDIF(NOT QT_QGLOBAL_H_FILE)
-
-###############################################################
-#
-#       read the version number of the installed of Qt and sets
-#       QT_INST_MAJOR_VERSION
-#       QT_INST_MINOR_VERSION
-#       QT_INST_PATCH_VERSION
-#
-###############################################################
-IF( QT_QGLOBAL_H_FILE)
-  IF(NOT QT_INST_MAJOR_VERSION OR NOT QT_INST_MINOR_VERSION OR NOT QT_INST_PATCH_VERSION)
-    #extract the version string from qglobal.h
-    FILE(READ ${QT_QGLOBAL_H_FILE} QT_QGLOBAL_H)
-    
-    # BUG !!! ... THE NEXT LINE DOES NOT WORK FOR Qt10 (even though that´s in far future) 
-    # Trolltech defines in src/corelib/global/qglobal.h: QT_VERSION is (major << 16) + (minor << 8) + patch.
-    
-    STRING(REGEX MATCH "#define[\t ]+QT_VERSION_STR[\t ]+\"([0-9]+.[0-9]+.[0-9]+)" QT_QGLOBAL_H "${QT_QGLOBAL_H}")
-    STRING(REGEX REPLACE ".*\"([0-9]+.[0-9]+.[0-9]+).*" "\\1" QT_QGLOBAL_H "${QT_QGLOBAL_H}")
-    
-    # Under windows the qt library (MSVC) has the format qt-mtXYZ where XYZ is the
-    # version X.Y.Z, so we need to remove the dots from version (at least in Qt3)
-    STRING(REGEX REPLACE "\\." "" qt_version_str "${QT_QGLOBAL_H}")
-    
-    IF(NOT QT_INST_MAJOR_VERSION)
-      STRING(REGEX REPLACE "([0-9]+)[0-9]+[0-9]+" "\\1" QT_INST_MAJOR_VERSION "${qt_version_str}")
-    ENDIF(NOT QT_INST_MAJOR_VERSION)
-    IF(NOT QT_INST_MINOR_VERSION)
-      STRING(REGEX REPLACE "[0-9]+([0-9]+)[0-9]+" "\\1" QT_INST_MINOR_VERSION "${qt_version_str}")
-    ENDIF(NOT QT_INST_MINOR_VERSION)
-    IF(NOT QT_INST_PATCH_VERSION)
-      STRING(REGEX REPLACE "[0-9]+[0-9]+([0-9]+)" "\\1" QT_INST_PATCH_VERSION "${qt_version_str}")
-    ENDIF(NOT QT_INST_PATCH_VERSION)
-  ENDIF(NOT QT_INST_MAJOR_VERSION OR NOT QT_INST_MINOR_VERSION OR NOT QT_INST_PATCH_VERSION)
-  # set qt_version_str back to x.y.z to make message outputs readable
-  SET(qt_version_str "${QT_INST_MAJOR_VERSION}.${QT_INST_MINOR_VERSION}.${QT_INST_PATCH_VERSION}")
-ELSE( QT_QGLOBAL_H_FILE )
-  IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-    MESSAGE( SEND_ERROR "Couldn´t find qglobal.h => Qt not installed.")
-  ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-  SET( QT_FOUND "NO" )
-ENDIF( QT_QGLOBAL_H_FILE )
-
-IF( NOT Qt_FIND_QUIETLY) 
-  MESSAGE(STATUS "Checking Qt-Version ${QT_INST_MAJOR_VERSION}.${QT_INST_MINOR_VERSION}.${QT_INST_PATCH_VERSION}")
-ENDIF( NOT Qt_FIND_QUIETLY) 
-
-#############################################################
-#
-#       check the minimum requirments set in QT_MIN_VERSION
-#
-#############################################################
-IF (QT_MIN_VERSION)
-  #now parse the parts of the user given version string into variables 
-  STRING(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+$" min_qt_major_vers "${QT_MIN_VERSION}")
-  IF (NOT min_qt_major_vers)
-    IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-      MESSAGE( SEND_ERROR "Invalid Qt version string given: \"${QT_MIN_VERSION}\", expected e.g. \"3.1.5\"")
-    ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-    SET( QT_FOUND "NO" )
-  ELSE(NOT min_qt_major_vers)
-    STRING(REGEX REPLACE "([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" min_qt_major_vers "${QT_MIN_VERSION}")
-    STRING(REGEX REPLACE "[0-9]+\\.([0-9])+\\.[0-9]+" "\\1" min_qt_minor_vers "${QT_MIN_VERSION}")
-    STRING(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" min_qt_patch_vers "${QT_MIN_VERSION}")
-    # min = "6.5.4", qt = "3.2.1"
-    
-    # check major number
-    IF (min_qt_major_vers GREATER QT_INST_MAJOR_VERSION)                  # (6 > 3) ?
-      IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-        MESSAGE(  SEND_ERROR "Qt major version too small (minimum: ${QT_MIN_VERSION}, found: ${qt_version_str})")            # yes
-      ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-      SET( QT_FOUND "NO" )
-    ELSE  (min_qt_major_vers GREATER QT_INST_MAJOR_VERSION)               # no
-      IF (min_qt_major_vers LESS QT_INST_MAJOR_VERSION)                  # (6 < 3) ?
-        SET( QT_VERSION_BIG_ENOUGH "YES" )                      # yes
-      ELSE (min_qt_major_vers LESS QT_INST_MAJOR_VERSION)                # ( 6==3) ?
-        
-        # check minor number
-        IF (min_qt_minor_vers GREATER QT_INST_MINOR_VERSION)            # (5>2) ?
-          IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-            MESSAGE(  SEND_ERROR "Qt minor version too small (minimum: ${QT_MIN_VERSION}, found: ${qt_version_str})")      # yes
-          ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-          SET( QT_FOUND "NO" )
-        ELSE (min_qt_minor_vers GREATER QT_INST_MINOR_VERSION)          # no
-          IF (min_qt_minor_vers LESS QT_INST_MINOR_VERSION)            # (5<2) ?
-            SET( QT_VERSION_BIG_ENOUGH "YES" )                # yes
-          ELSE (min_qt_minor_vers LESS QT_INST_MINOR_VERSION)          # (5==2)
-            
-            # check patch number
-            IF (min_qt_patch_vers GREATER QT_INST_PATCH_VERSION)      # (4>1) ?
-              IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-                MESSAGE( SEND_ERROR "Qt patch level too small (minimum: ${QT_MIN_VERSION}, found: ${qt_version_str})")  # yes
-              ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-              SET( QT_FOUND "NO" )
-            ELSE (min_qt_patch_vers GREATER QT_INST_PATCH_VERSION)    # (4>1) ?
-              SET( QT_VERSION_BIG_ENOUGH "YES" )             # yes
-            ENDIF (min_qt_patch_vers GREATER QT_INST_PATCH_VERSION)   # (4>1) ?
-          ENDIF (min_qt_minor_vers LESS QT_INST_MINOR_VERSION)
-          
-        ENDIF (min_qt_minor_vers GREATER QT_INST_MINOR_VERSION)
-      ENDIF (min_qt_major_vers LESS QT_INST_MAJOR_VERSION)
-    ENDIF (min_qt_major_vers GREATER QT_INST_MAJOR_VERSION)
-  ENDIF (NOT min_qt_major_vers)
-
-ENDIF (QT_MIN_VERSION)
-
-
-#############################################################
-#
-#       check the maximum requirments set in QT_MAX_VERSION
-#
-#############################################################
-IF(QT_MAX_VERSION) 
-  #now parse the parts of the user given version string into variables 
-  STRING(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+$" max_qt_major_vers "${QT_MAX_VERSION}")
-  IF (NOT max_qt_major_vers)
-    IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-      MESSAGE( SEND_ERROR "Invalid Qt version string given: \"${QT_MAX_VERSION}\", expected e.g. \"4.1.5\"")
-    ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-    SET( QT_FOUND "NO" )
-  ELSE(NOT max_qt_major_vers)
-    
-    STRING(REGEX REPLACE "([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" max_qt_major_vers "${QT_MAX_VERSION}")
-    STRING(REGEX REPLACE "[0-9]+\\.([0-9])+\\.[0-9]+" "\\1" max_qt_minor_vers "${QT_MAX_VERSION}")
-    STRING(REGEX REPLACE "[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" max_qt_patch_vers "${QT_MAX_VERSION}")
-    # max = "6.5.4", qt = "7.2.1"
-    
-    # check major number
-    IF (max_qt_major_vers LESS QT_INST_MAJOR_VERSION)                  # (6 < 3) ?
-      IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-        MESSAGE(  SEND_ERROR "Qt major version too big (maximum: ${QT_MAX_VERSION}, found: ${qt_version_str})") # yes
-      ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-      SET( QT_FOUND "NO" )
-    ELSE  (max_qt_major_vers LESS QT_INST_MAJOR_VERSION)               # no
-      IF (max_qt_major_vers GREATER QT_INST_MAJOR_VERSION)                  # (6 < 3) ?
-        SET( QT_VERSION_SMALL_ENOUGH "YES" )                      # yes
-      ELSE (max_qt_major_vers GREATER QT_INST_MAJOR_VERSION)                # ( 6==3) ?
-        
-        # check minor number
-        IF (max_qt_minor_vers LESS QT_INST_MINOR_VERSION)            # (5 < 2) ?
-          IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-            MESSAGE(  SEND_ERROR "Qt minor version too big (maximum: ${QT_MAX_VERSION}, found: ${qt_version_str})") # yes
-          ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-          SET( QT_FOUND "NO" )
-        ELSE (max_qt_minor_vers LESS QT_INST_MINOR_VERSION)          # no
-          IF (max_qt_minor_vers GREATER QT_INST_MINOR_VERSION)            # (5 < 2) ?
-            SET( QT_VERSION_SMALL_ENOUGH "YES" )                # yes
-          ELSE (max_qt_minor_vers GREATER QT_INST_MINOR_VERSION)          # (5==2)
-            
-            # check patch number
-            IF (max_qt_patch_vers LESS QT_INST_PATCH_VERSION)      # (4 < 1) ?
-              IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-                MESSAGE( SEND_ERROR "Qt patch level too big (maximum: ${QT_MAX_VERSION}, found: ${qt_version_str})")  # yes
-              ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-              SET( QT_FOUND "NO" )
-            ELSE (max_qt_patch_vers LESS QT_INST_PATCH_VERSION)    # (4 < 1) ?
-              SET( QT_VERSION_SMALL_ENOUGH "YES" )             # yes
-            ENDIF (max_qt_patch_vers LESS QT_INST_PATCH_VERSION)   # (4 > 1) ?
-            
-          ENDIF (max_qt_minor_vers GREATER QT_INST_MINOR_VERSION)
-        ENDIF (max_qt_minor_vers LESS QT_INST_MINOR_VERSION)
-      ENDIF (max_qt_major_vers GREATER QT_INST_MAJOR_VERSION)
-    ENDIF (max_qt_major_vers LESS QT_INST_MAJOR_VERSION)
-  ENDIF (NOT max_qt_major_vers)
-ENDIF(QT_MAX_VERSION)
-
-
-###############################################################
-#
-#       include the correct FindQtX.cmake file if Qt was found
-#       (we only distinguage between major versions
-#
-###############################################################
-IF(QT_VERSION_SMALL_ENOUGH AND QT_VERSION_BIG_ENOUGH)
-  # Call package for Qt3
-  IF( QT_INST_MAJOR_VERSION LESS 4)
-    FIND_PACKAGE(Qt3)
-  ENDIF( QT_INST_MAJOR_VERSION LESS 4)
-  # Call package for Qt4
-  IF( QT_INST_MAJOR_VERSION GREATER 3 )
-    IF( QT_INST_MAJOR_VERSION LESS 5)
-      FIND_PACKAGE(Qt4)
-    ELSE( QT_INST_MAJOR_VERSION LESS 5)
-      IF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-        MESSAGE(SEND_ERROR "Right now CMake supports only Qt-Versions less than 5.0.0")
-      ENDIF( NOT Qt_FIND_QUIETLY AND Qt_FIND_REQUIRED) 
-      SET(QT_FOUND "NO")
-    ENDIF( QT_INST_MAJOR_VERSION LESS 5)
-  ENDIF( QT_INST_MAJOR_VERSION GREATER 3 )
-ENDIF(QT_VERSION_SMALL_ENOUGH AND QT_VERSION_BIG_ENOUGH)
-
-
-MARK_AS_ADVANCED(QT4_QGLOBAL_H_FILE QT3_QGLOBAL_H_FILE QT_QMAKE_EXECUTABLE)
+# 
+MESSAGE("FindQt has been deprecated, Defaulting to FindQt3. You should use FindQt3 FindQt4.cmake and CheckQtInstalled.cmake directly.")
+INCLUDE(FindQt3)