use FindZLIB(), FindJPEG() etc. on MacOSX as well to avoid possible conflicts with MacPorts.

CMakeLists.txt

@@ -215,7 +215,7 @@ set(BUILD_TESTS ON CACHE BOOL "Build tests")
 
 # Build 3rdparty libraries under unix
 # ===================================================
-if(WIN32 OR APPLE)
+if(WIN32)
     set(OPENCV_BUILD_3RDPARTY_LIBS TRUE  CACHE BOOL "Build 3rd party libraries")
 else()
     set(OPENCV_BUILD_3RDPARTY_LIBS FALSE CACHE BOOL "Build 3rd party libraries")
@@ -425,29 +425,6 @@ if(UNIX)
       set(HAVE_DC1394 FALSE)
     endif()
 
-    if(NOT APPLE)
-        CHECK_INCLUDE_FILE(alloca.h HAVE_ALLOCA_H)
-        CHECK_FUNCTION_EXISTS(alloca HAVE_ALLOCA)
-        CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
-        CHECK_INCLUDE_FILE(pthread.h HAVE_LIBPTHREAD)
-
-        if(WITH_XINE)
-            CHECK_MODULE(libxine HAVE_XINE)
-        else()
-            set(HAVE_XINE FALSE)
-        endif()
-        if(WITH_V4L)
-
-
-            CHECK_MODULE(libv4l1 HAVE_LIBV4L)
-            CHECK_INCLUDE_FILE(linux/videodev.h HAVE_CAMV4L)
-            CHECK_INCLUDE_FILE(linux/videodev2.h HAVE_CAMV4L2)
-        else()
-            set(HAVE_LIBV4L FALSE)
-            set(HAVE_CAMV4L FALSE)
-            set(HAVE_CAMV4L2 FALSE)
-        endif()
-
     if(NOT OPENCV_BUILD_3RDPARTY_LIBS)
         include(FindZLIB)
         if(WITH_PNG)
@@ -476,6 +453,27 @@ if(UNIX)
         endif()
     endif()
 
+    if(NOT APPLE)
+        CHECK_INCLUDE_FILE(alloca.h HAVE_ALLOCA_H)
+        CHECK_FUNCTION_EXISTS(alloca HAVE_ALLOCA)
+        CHECK_INCLUDE_FILE(unistd.h HAVE_UNISTD_H)
+        CHECK_INCLUDE_FILE(pthread.h HAVE_LIBPTHREAD)
+
+        if(WITH_XINE)
+            CHECK_MODULE(libxine HAVE_XINE)
+        else()
+            set(HAVE_XINE FALSE)
+        endif()
+        if(WITH_V4L)
+            CHECK_MODULE(libv4l1 HAVE_LIBV4L)
+            CHECK_INCLUDE_FILE(linux/videodev.h HAVE_CAMV4L)
+            CHECK_INCLUDE_FILE(linux/videodev2.h HAVE_CAMV4L2)
+        else()
+            set(HAVE_LIBV4L FALSE)
+            set(HAVE_CAMV4L FALSE)
+            set(HAVE_CAMV4L2 FALSE)
+        endif()
+
         if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "NetBSD" AND NOT ANDROID)
             set(OPENCV_LINKER_LIBS m pthread)
         elseif(ANDROID)

modules/highgui/CMakeLists.txt

@@ -53,7 +53,7 @@ endif()
 
 if(WITH_JASPER)
     add_definitions(-DHAVE_JASPER)
-	if(JPEG_FOUND)
+    if(JASPER_FOUND)
         include_directories(${JASPER_INCLUDE_DIR})
         set(GRFMT_LIBS ${GRFMT_LIBS} ${JASPER_LIBRARIES})
     else()