From 633019c0177f17478f04a7b7150990652c582e68 Mon Sep 17 00:00:00 2001
From: matlabbe <matlabbe@gmail.com>
Date: Thu, 13 Aug 2015 15:12:43 -0400
Subject: [PATCH] CMake: added build options WITH_*** for all optional
 dependencies

---
 CMakeLists.txt | 79 +++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 62 insertions(+), 17 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b468954..10cd4696 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -121,26 +121,57 @@ IF(APPLE)
 ENDIF(APPLE)
 
 ####### DEPENDENCIES #######
+
+option(WITH_QT            "Include Qt support"                   ON)
+option(WITH_FREENECT      "Include Freenect support"             ON)
+option(WITH_FREENECT2     "Include Freenect2 support"            ON)
+option(WITH_OPENNI2       "Include OpenNI2 support"              ON)
+option(WITH_DC1394        "Include dc1394 support"               ON)
+option(WITH_G2O           "Include g2o support"                  ON)
+option(WITH_FLYCAPTURE2   "Include FlyCapture2/Triclops support" ON)
+
 FIND_PACKAGE(OpenCV REQUIRED)
 FIND_PACKAGE(PCL 1.7 REQUIRED)
-FIND_PACKAGE(VTK REQUIRED)
-IF("${VTK_MAJOR_VERSION}" EQUAL 5)
-	FIND_PACKAGE(QVTK REQUIRED) # only for VTK 5
-ENDIF("${VTK_MAJOR_VERSION}" EQUAL 5)
 FIND_PACKAGE(ZLIB REQUIRED)
-FIND_PACKAGE(Freenect)
-FIND_PACKAGE(freenect2 QUIET)
-FIND_PACKAGE(OpenNI2)
-FIND_PACKAGE(DC1394)
-FIND_PACKAGE(G2O)
-FIND_PACKAGE(FlyCapture2)
 
+IF(WITH_QT)
 # If Qt is here, the GUI will be built
-IF("${RTABMAP_QT_VERSION}" STREQUAL "4")
-    FIND_PACKAGE(Qt4 COMPONENTS QtCore QtGui QtSvg)
-ELSE()
-    FIND_PACKAGE(Qt5 COMPONENTS Widgets Core Gui Svg)
-ENDIF()
+    IF("${RTABMAP_QT_VERSION}" STREQUAL "4")
+        FIND_PACKAGE(Qt4 COMPONENTS QtCore QtGui QtSvg)
+    ELSE()
+        FIND_PACKAGE(Qt5 COMPONENTS Widgets Core Gui Svg)
+    ENDIF()
+    IF(QT4_FOUND OR Qt5_FOUND)
+        FIND_PACKAGE(VTK REQUIRED)
+        IF("${VTK_MAJOR_VERSION}" EQUAL 5)
+            FIND_PACKAGE(QVTK REQUIRED) # only for VTK 5
+        ENDIF("${VTK_MAJOR_VERSION}" EQUAL 5)
+    ENDIF(QT4_FOUND OR Qt5_FOUND)
+ENDIF(WITH_QT)
+
+IF(WITH_FREENECT)
+    FIND_PACKAGE(Freenect)
+ENDIF(WITH_FREENECT)
+
+IF(WITH_FREENECT2)
+    FIND_PACKAGE(freenect2 QUIET)
+ENDIF(WITH_FREENECT2)
+
+IF(WITH_OPENNI2)
+    FIND_PACKAGE(OpenNI2)
+ENDIF(WITH_OPENNI2)
+
+IF(WITH_DC1394)
+    FIND_PACKAGE(DC1394)
+ENDIF(WITH_DC1394)
+
+IF(WITH_G2O)
+    FIND_PACKAGE(G2O)
+ENDIF(WITH_G2O)
+
+IF(WITH_FLYCAPTURE2)
+    FIND_PACKAGE(FlyCapture2)
+ENDIF(WITH_FLYCAPTURE2)
 
 ####### OSX BUNDLE CMAKE_INSTALL_PREFIX #######
 IF(APPLE AND BUILD_AS_BUNDLE)
@@ -183,8 +214,8 @@ ADD_SUBDIRECTORY( corelib )
 IF(Qt5_FOUND OR (QT4_FOUND AND QT_QTCORE_FOUND AND QT_QTGUI_FOUND))
    ADD_SUBDIRECTORY( guilib )
    ADD_SUBDIRECTORY( app )
-ELSE()
-   MESSAGE(STATUS "[WARNING] Qt not found, the GUI lib and the stand-alone application will not be compiled...")
+ELSEIF(WITH_QT)
+   MESSAGE(WARNING "Qt not found, the GUI lib and the stand-alone application will not be compiled...")
 ENDIF()
 
 ADD_SUBDIRECTORY( tools )
@@ -346,36 +377,48 @@ ENDIF(OpenCV_FOUND)
 
 IF(Freenect_FOUND)
 MESSAGE(STATUS "  With Freenect             = YES")
+ELSEIF(NOT WITH_FREENECT)
+MESSAGE(STATUS "  With Freenect             = NO (WITH_FREENECT=OFF)")
 ELSE()
 MESSAGE(STATUS "  With Freenect             = NO (libfreenect not found)")
 ENDIF()
 
 IF(OpenNI2_FOUND)
 MESSAGE(STATUS "  With OpenNI2              = YES")
+ELSEIF(NOT WITH_OPENNI2)
+MESSAGE(STATUS "  With OpenNI2              = NO (WITH_OPENNI2=OFF)")
 ELSE()
 MESSAGE(STATUS "  With OpenNI2              = NO (OpenNI2 not found)")
 ENDIF()
 
 IF(freenect2_FOUND)
 MESSAGE(STATUS "  With Freenect2            = YES")
+ELSEIF(NOT WITH_FREENECT2)
+MESSAGE(STATUS "  With Freenect2            = NO (WITH_FREENECT2=OFF)")
 ELSE()
 MESSAGE(STATUS "  With Freenect2            = NO (libfreenect2 not found)")
 ENDIF()
 
 IF(DC1394_FOUND)
 MESSAGE(STATUS "  With dc1394               = YES")
+ELSEIF(NOT WITH_DC1394)
+MESSAGE(STATUS "  With dc1394               = NO (WITH_DC1394=OFF)")
 ELSE()
 MESSAGE(STATUS "  With dc1394               = NO (dc1394 not found)")
 ENDIF()
 
 IF(FlyCapture2_FOUND)
 MESSAGE(STATUS "  With FlyCapture2/Triclops = YES")
+ELSEIF(NOT WITH_FLYCAPTURE2)
+MESSAGE(STATUS "  With FlyCapture2/Triclops = NO (WITH_FLYCAPTURE2=OFF)")
 ELSE()
 MESSAGE(STATUS "  With FlyCapture2/Triclops = NO (Point Grey SDK not found)")
 ENDIF()
 
 IF(G2O_FOUND)
 MESSAGE(STATUS "  With g2o                  = YES")
+ELSEIF(NOT WITH_G2O)
+MESSAGE(STATUS "  With g2o                  = NO (WITH_G2O=OFF)")
 ELSE()
 MESSAGE(STATUS "  With g2o                  = NO (g2o not found)")
 ENDIF()
@@ -384,6 +427,8 @@ IF(QT4_FOUND)
 MESSAGE(STATUS "  With Qt                   = YES (version 4)")
 ELSEIF(Qt5_FOUND)
 MESSAGE(STATUS "  With Qt                   = YES (version 5)")
+ELSEIF(NOT WITH_QT)
+MESSAGE(STATUS "  With Qt                   = NO (WITH_QT=OFF)")
 ELSE()
 MESSAGE(STATUS "  With Qt                   = NO (Qt not found, to use Qt5 you should set -DRTABMAP_QT_VERSION=5)")
 ENDIF()