[trunk] Start FolderReorgProposal task

Update issue 177

1 files changed, 134 insertions, 0 deletions

diff --git a/cmake/TestLargeFiles.cmake b/cmake/TestLargeFiles.cmake
new file mode 100644
index 00000000..ffef84f5
--- /dev/null
+++ b/cmake/TestLargeFiles.cmake
@@ -0,0 +1,134 @@
+# - Define macro to check large file support
+#
+#  OPJ_TEST_LARGE_FILES(VARIABLE)
+#
+#  VARIABLE will be set to true if off_t is 64 bits, and fseeko/ftello present.
+#  This macro will also defines the necessary variable enable large file support, for instance
+#  _LARGE_FILES
+#  _LARGEFILE_SOURCE
+#  _FILE_OFFSET_BITS 64
+#  HAVE_FSEEKO
+#
+#  However, it is YOUR job to make sure these defines are set in a #cmakedefine so they
+#  end up in a config.h file that is included in your source if necessary!
+#
+#  Adapted from Gromacs project (http://www.gromacs.org/)
+#  by Julien Malik
+#
+
+macro(OPJ_TEST_LARGE_FILES VARIABLE)
+    if("${VARIABLE}" MATCHES "^${VARIABLE}$")
+
+        # On most platforms it is probably overkill to first test the flags for 64-bit off_t,
+        # and then separately fseeko. However, in the future we might have 128-bit filesystems
+        # (ZFS), so it might be dangerous to indiscriminately set e.g. _FILE_OFFSET_BITS=64.
+
+        message(STATUS "Checking for 64-bit off_t")
+
+        # First check without any special flags
+        try_compile(FILE64_OK "${PROJECT_BINARY_DIR}"
+                    "${PROJECT_SOURCE_DIR}/cmake/TestFileOffsetBits.c")
+        if(FILE64_OK)
+          message(STATUS "Checking for 64-bit off_t - present")
+       	endif()
+
+        if(NOT FILE64_OK)
+            # Test with _FILE_OFFSET_BITS=64
+            try_compile(FILE64_OK "${PROJECT_BINARY_DIR}"
+                        "${PROJECT_SOURCE_DIR}/cmake/TestFileOffsetBits.c"
+                        COMPILE_DEFINITIONS "-D_FILE_OFFSET_BITS=64" )
+            if(FILE64_OK)
+                message(STATUS "Checking for 64-bit off_t - present with _FILE_OFFSET_BITS=64")
+                set(_FILE_OFFSET_BITS 64)
+            endif()
+        endif()
+
+        if(NOT FILE64_OK)
+            # Test with _LARGE_FILES
+            try_compile(FILE64_OK "${PROJECT_BINARY_DIR}"
+                        "${PROJECT_SOURCE_DIR}/cmake/TestFileOffsetBits.c"
+                        COMPILE_DEFINITIONS "-D_LARGE_FILES" )
+            if(FILE64_OK)
+                message(STATUS "Checking for 64-bit off_t - present with _LARGE_FILES")
+                set(_LARGE_FILES 1)
+            endif()
+        endif()
+	
+        if(NOT FILE64_OK)
+            # Test with _LARGEFILE_SOURCE
+            try_compile(FILE64_OK "${PROJECT_BINARY_DIR}"
+                        "${PROJECT_SOURCE_DIR}/cmake/TestFileOffsetBits.c"
+                        COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
+            if(FILE64_OK)
+                message(STATUS "Checking for 64-bit off_t - present with _LARGEFILE_SOURCE")
+                set(_LARGEFILE_SOURCE 1)
+            endif()
+        endif()
+
+
+        #if(NOT FILE64_OK)
+        #    # now check for Windows stuff
+        #    try_compile(FILE64_OK "${PROJECT_BINARY_DIR}"
+        #                "${PROJECT_SOURCE_DIR}/cmake/TestWindowsFSeek.c")
+        #    if(FILE64_OK)
+        #        message(STATUS "Checking for 64-bit off_t - present with _fseeki64")
+        #        set(HAVE__FSEEKI64 1)
+        #    endif()
+        #endif()
+
+        if(NOT FILE64_OK)
+            message(STATUS "Checking for 64-bit off_t - not present")
+        endif()
+
+        set(_FILE_OFFSET_BITS ${_FILE_OFFSET_BITS} CACHE INTERNAL "Result of test for needed _FILE_OFFSET_BITS=64")
+        set(_LARGE_FILES      ${_LARGE_FILES}      CACHE INTERNAL "Result of test for needed _LARGE_FILES")
+        set(_LARGEFILE_SOURCE ${_LARGEFILE_SOURCE} CACHE INTERNAL "Result of test for needed _LARGEFILE_SOURCE")
+
+        # Set the flags we might have determined to be required above
+        configure_file("${PROJECT_SOURCE_DIR}/cmake/TestLargeFiles.c.cmake.in"
+                       "${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
+
+        message(STATUS "Checking for fseeko/ftello")
+
+	    # Test if ftello/fseeko are	available
+	    try_compile(FSEEKO_COMPILE_OK
+	                "${PROJECT_BINARY_DIR}"
+                    "${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c")
+	
+	    if(FSEEKO_COMPILE_OK)
+            message(STATUS "Checking for fseeko/ftello - present")
+        endif()
+
+        if(NOT FSEEKO_COMPILE_OK)
+                # glibc 2.2 needs _LARGEFILE_SOURCE for fseeko (but not for 64-bit off_t...)
+                try_compile(FSEEKO_COMPILE_OK
+                            "${PROJECT_BINARY_DIR}"
+                            "${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestLargeFiles.c"
+                            COMPILE_DEFINITIONS "-D_LARGEFILE_SOURCE" )
+
+                if(FSEEKO_COMPILE_OK)
+                    message(STATUS "Checking for fseeko/ftello - present with _LARGEFILE_SOURCE")
+                    set(_LARGEFILE_SOURCE ${_LARGEFILE_SOURCE} CACHE INTERNAL "Result of test for needed _LARGEFILE_SOURCE")
+                endif()
+        endif()
+
+	    if(FSEEKO_COMPILE_OK)
+                set(HAVE_FSEEKO ON CACHE INTERNAL "Result of test for fseeko/ftello")
+        else()
+                message(STATUS "Checking for fseeko/ftello - not found")
+                set(HAVE_FSEEKO OFF CACHE INTERNAL "Result of test for fseeko/ftello")
+        endif()
+
+	    if(FILE64_OK AND FSEEKO_COMPILE_OK)
+                message(STATUS "Large File support - found")
+                set(${VARIABLE} ON CACHE INTERNAL "Result of test for large file support")
+        else()
+                message(STATUS "Large File support - not found")
+                set(${VARIABLE} OFF CACHE INTERNAL "Result of test for large file support")
+        endif()
+
+    endif()
+endmacro()
+
+
+