Add SeExpr as a 3rdparty dependency

This first commit adds SeExpr as a supported dependency on Windows only.
Later commits will add it to Linux and macOS.

3rdparty/CMakeLists.txt

@@ -235,3 +235,4 @@ endif()
 add_subdirectory( ext_heif )
 add_subdirectory(ext_giflib)
 add_subdirectory(ext_quazip)
+add_subdirectory(ext_seexpr)

3rdparty/ext_seexpr/CMakeLists.txt

+SET(PREFIX_ext_seexpr "${EXTPREFIX}" )
+ExternalProject_Add(
+    ext_seexpr
+    GIT_REPOSITORY https://invent.kde.org/lsegovia/SeExpr.git
+    GIT_TAG 9d44ad9ff6b7d797de718a6869ba5f43e2790867
+
+    PATCH_COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/windows7/SeExpr/generated <SOURCE_DIR>/src/SeExpr2/generated
+                    COMMAND ${CMAKE_COMMAND} -E copy_directory <SOURCE_DIR>/windows7/ui/generated <SOURCE_DIR>/src/SeExpr2/UI/generated
+
+    CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${PREFIX_ext_seexpr} -DCMAKE_BUILD_TYPE=${GLOBAL_BUILD_TYPE} ${GLOBAL_PROFILE} -DBOOST_INCLUDE_DIR=${PREFIX_ext_seexpr}/include -DBOOST_ROOT=${PREFIX_ext_seexpr} -DBOOST_LIB_DIR=${PREFIX_ext_seexpr}/lib -DENABLE_LLVM_BACKEND=OFF -DENABLE_SSE4=OFF -DBUILD_DOC=OFF -DBUILD_TESTS=OFF -DBUILD_UTILS=OFF -DUSE_PYTHON=OFF
+
+    UPDATE_COMMAND ""
+    DEPENDS ext_qt ext_pyqt
+)

build-tools/windows/build.cmd

@@ -768,6 +768,7 @@ set EXT_TARGETS=%EXT_TARGETS% jpeg lcms2 ocio ilmbase openexr png tiff gsl vc li
 set EXT_TARGETS=%EXT_TARGETS% giflib qt kwindowsystem drmingw gmic freetype poppler 
 set EXT_TARGETS=%EXT_TARGETS% python sip pyqt
 set EXT_TARGETS=%EXT_TARGETS% lzma quazip openjpeg libheif
+set EXT_TARGETS=%EXT_TARGETS% seexpr 
 
 for %%a in (%EXT_TARGETS%) do (
     echo Building ext_%%a...