fix cmake

CMakeLists.txt

@@ -10,8 +10,9 @@ project (isimpa VERSION 1.3.4)
 include(cmake/CPM.cmake)
 
 # include helper functions/macros
-add_subdirectory(cMake/ISIMPA_Helpers)
+add_subdirectory(cmake/ISIMPA_Helpers)
 
+InitializeISIMPABuildOptions()
 ISIMPALibpackChecks()
 
 # convert path of a .lib file into a .dll file
@@ -43,9 +44,6 @@ endif()
 # defined projects like INSTALL.vcproj and ZERO_CHECK.vcproj
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
-#Add an option in order to build only the computation cores and libraries
-option(SKIPISIMPA "skip-gui" FALSE)
-
 # Set compiler flags and options.
 #############################################################
 # enable use of c++11 features where available

cmake/ISIMPA_Helpers/InitializeISIMPABuildOptions.cmake

@@ -0,0 +1,66 @@
+macro(InitializeISIMPABuildOptions)
+    # ==============================================================================
+    # =================   All the options for the build process    =================
+    # ==============================================================================
+
+    option(BUILD_FORCE_DIRECTORY "The build directory must be different to the source directory." OFF)
+    option(SKIPISIMPA "Do not build ISIMPA Gui." OFF)
+
+    # == Win32 is default behaviour use the LibPack copied in Source tree ==========
+    if(MSVC)
+        option(ISIMPA_RELEASE_PDB "Create PDB files for Release version." ON)
+        option(ISIMPA_RELEASE_SEH "Enable Structured Exception Handling for Release version." ON)
+        option(ISIMPA_LIBPACK_USE "Use the LibPack to Build ISIMPA (only Win32 so far)." ON)
+        option(ISIMPA_USE_PCH "Activate precompiled headers where it's used." ON)
+
+        if (DEFINED ENV{ISIMPA_LIBPACK_DIR})
+            set(ISIMPA_LIBPACK_DIR $ENV{ISIMPA_LIBPACK_DIR} CACHE PATH  "Directory of the ISIMPA LibPack")
+            message(STATUS "Found libpack env variable: ${ISIMPA_LIBPACK_DIR}")
+        else()
+            set(ISIMPA_LIBPACK_DIR ${CMAKE_SOURCE_DIR} CACHE PATH  "Directory of the ISIMPA LibPack")
+        endif()
+
+        set(LIBPACK_FOUND OFF )
+        if (EXISTS ${ISIMPA_LIBPACK_DIR}/plugins/imageformats/qsvg.dll)
+            set(LIBPACK_FOUND ON )
+            set(COPY_LIBPACK_BIN_TO_BUILD OFF )
+            # Create install commands for dependencies for INSTALL target in ISIMPA solution
+            option(ISIMPA_INSTALL_DEPEND_DIRS "Create install dependency commands for the INSTALL target found
+                in the ISIMPA solution." ON)
+            # Copy libpack smaller dependency folders to build folder per user request - if non-existent at destination
+            if (NOT EXISTS ${CMAKE_BINARY_DIR}/bin/imageformats/qsvg.dll)
+                option(ISIMPA_COPY_DEPEND_DIRS_TO_BUILD "Copy smaller libpack dependency directories to build directory." OFF)
+            endif()
+            # Copy libpack 'bin' directory contents to build 'bin' per user request - only IF NOT EXISTS already
+            if (NOT EXISTS ${CMAKE_BINARY_DIR}/bin/DLLs)
+                set(COPY_LIBPACK_BIN_TO_BUILD ON )
+                option(ISIMPA_COPY_LIBPACK_BIN_TO_BUILD "Copy larger libpack dependency 'bin' folder to the build directory." OFF)
+                # Copy only the minimum number of files to get a working application
+                option(ISIMPA_COPY_PLUGINS_BIN_TO_BUILD "Copy plugins to the build directory." OFF)
+            endif()
+        else()
+            message(WARNING Could not locate ${ISIMPA_LIBPACK_DIR}/plugins/imageformats/qsvg.dll)
+            message("Libpack NOT found.\nIf you intend to use a Windows libpack, set the ISIMPA_LIBPACK_DIR to the libpack directory.")
+            message(STATUS "Visit: https://github.com/ISIMPA/ISIMPA-Libpack/releases/ for Windows libpack downloads.")
+        endif()
+    elseif(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
+        option(ISIMPA_WARN_ERROR "Make all warnings into errors. " OFF)
+    else(MSVC)
+        option(ISIMPA_LIBPACK_USE "Use the LibPack to Build ISIMPA (only Win32 so far)." OFF)
+        set(ISIMPA_LIBPACK_DIR ""  CACHE PATH  "Directory of the ISIMPA LibPack")
+    endif(MSVC)
+
+    # for Windows the minimum required cmake version is 3.4.3 to build the CAM module
+    if(WIN32 AND CMAKE_VERSION VERSION_LESS 3.4.3)
+        message(WARNING "Disable CAM, requires cmake >= 3.4.3 in order to build this module")
+        set(BUILD_CAM OFF )
+    endif()
+
+    # force build directory to be different to source directory
+    if (BUILD_FORCE_DIRECTORY)
+        if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
+            message(FATAL_ERROR "The build directory (${CMAKE_BINARY_DIR}) must be different to the source directory (${CMAKE_SOURCE_DIR}).\n"
+                                "Please choose another build directory! Or disable the option BUILD_FORCE_DIRECTORY.")
+        endif()
+    endif()
+endmacro(InitializeISIMPABuildOptions)