ENH: Allow using system Blosc

To make it easier to test newer versions, or apply system specific
patches.

Author: hadess

deps/CMakeLists.txt

@@ -40,6 +40,7 @@ option(DEP_BUILD_TIFF "Compile libtiff" ON)
 option(DEP_BUILD_BOOST "Compile boost" ON)
 option(DEP_BUILD_OPENSSL "Compile openssl" ON)
 option(DEP_BUILD_GLFW "Compile GLFW" ON)
+option(DEP_BUILD_BLOSC "Compile Blosc" ON)
 option(DEP_BUILD_FREETYPE "Compile freetype" ON)
 option(DEP_BUILD_WXWIDGETS "Compile wxWidgets" ON)
 option(DEP_BUILD_FFMPEG "Compile ffmpeg" ON)
@@ -241,7 +242,11 @@ include(OpenCSG/OpenCSG.cmake)
 
 include(TBB/TBB.cmake)
 
-include(Blosc/Blosc.cmake)
+set(BLOSC_PKG "")
+if (DEP_BUILD_BLOSC)
+    include(Blosc/Blosc.cmake)
+    set(BLOSC_PKG dep_Blosc)
+endif ()
 include(OpenEXR/OpenEXR.cmake)
 include(OpenVDB/OpenVDB.cmake)
 

deps/OpenVDB/OpenVDB.cmake

@@ -22,7 +22,7 @@ bambustudio_add_cmake_project(OpenVDB
     PATCH_COMMAND git apply ${OPENVDB_DIRECTORY_FLAG} --verbose --ignore-space-change --whitespace=fix ${CMAKE_CURRENT_LIST_DIR}/0001-clang19.patch
     # URL https://github.com/AcademySoftwareFoundation/openvdb/archive/refs/tags/v10.0.1.zip
     # URL_HASH SHA256=48C2CFA9853B58FA86282DF1F83F0E99D07858CC03EB2BA8227DC447A830100A
-    DEPENDS dep_TBB dep_Blosc dep_OpenEXR ${BOOST_PKG}
+    DEPENDS dep_TBB ${BLOSC_PKG} dep_OpenEXR ${BOOST_PKG}
     CMAKE_ARGS
         -DCMAKE_POSITION_INDEPENDENT_CODE=ON 
         -DOPENVDB_BUILD_PYTHON_MODULE=OFF