Build against system libraries

Gbp-Pq: Name 0001-Build-against-system-libraries.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa51851bf2d05c7b1f9c9da10ec4cec4cb8258f1..b82a941c91ba07d68faf9a21872c16d8b860954e 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -573,12 +573,25 @@ function(get_resgen_vars ARCHIVE_DIR ARCHIVE_NAME)
     endif()
 endfunction()
 
+# ==================================================================================================
+# External dependencies
+# ==================================================================================================
+find_package(GTest REQUIRED)
+find_package(tsl-robin-map REQUIRED)
+find_package(meshoptimizer REQUIRED)
+find_package(draco REQUIRED)
+if(IS_HOST_PLATFORM)
+    find_package(PNG REQUIRED)
+    find_package(SDL2 REQUIRED)
+    find_package(ZLIB REQUIRED)
+    find_package(tinyexr REQUIRED)
+endif()
+
 # ==================================================================================================
 # Sub-projects
 # ==================================================================================================
 
 # Common to all platforms
-add_subdirectory(${EXTERNAL}/libgtest/tnt)
 add_subdirectory(${LIBRARIES}/camutils)
 add_subdirectory(${LIBRARIES}/filabridge)
 add_subdirectory(${LIBRARIES}/filaflat)
@@ -597,22 +610,17 @@ add_subdirectory(${FILAMENT}/filament)
 add_subdirectory(${FILAMENT}/shaders)
 add_subdirectory(${EXTERNAL}/civetweb/tnt)
 add_subdirectory(${EXTERNAL}/hat-trie/tnt)
-add_subdirectory(${EXTERNAL}/imgui/tnt)
-add_subdirectory(${EXTERNAL}/robin-map/tnt)
+include(debian/cmake/imgui.cmake)
 add_subdirectory(${EXTERNAL}/smol-v/tnt)
-add_subdirectory(${EXTERNAL}/benchmark/tnt)
-add_subdirectory(${EXTERNAL}/meshoptimizer)
+include(debian/cmake/benchmark.cmake)
 add_subdirectory(${EXTERNAL}/cgltf/tnt)
-add_subdirectory(${EXTERNAL}/draco/tnt)
-add_subdirectory(${EXTERNAL}/jsmn/tnt)
-add_subdirectory(${EXTERNAL}/stb/tnt)
+include(debian/cmake/jsmn.cmake)
+include(debian/cmake/stb.cmake)
 add_subdirectory(${EXTERNAL}/getopt)
 
 if (FILAMENT_BUILD_FILAMAT OR IS_HOST_PLATFORM)
-    # spirv-tools must come before filamat, as filamat relies on the presence of the
-    # spirv-tools_SOURCE_DIR variable.
-    add_subdirectory(${EXTERNAL}/spirv-tools)
-    add_subdirectory(${EXTERNAL}/glslang/tnt)
+    include(debian/cmake/spirv-tools.cmake)
+    include(debian/cmake/glslang.cmake)
     add_subdirectory(${EXTERNAL}/spirv-cross/tnt)
     add_subdirectory(${LIBRARIES}/filamat)
 
@@ -651,11 +659,7 @@ if (IS_HOST_PLATFORM)
 
     add_subdirectory(${EXTERNAL}/astcenc/tnt)
     add_subdirectory(${EXTERNAL}/etc2comp)
-    add_subdirectory(${EXTERNAL}/libassimp/tnt)
-    add_subdirectory(${EXTERNAL}/libpng/tnt)
-    add_subdirectory(${EXTERNAL}/libsdl2/tnt)
-    add_subdirectory(${EXTERNAL}/libz/tnt)
-    add_subdirectory(${EXTERNAL}/tinyexr/tnt)
+    include(debian/cmake/libassimp.cmake)
 
     add_subdirectory(${TOOLS}/cmgen)
     add_subdirectory(${TOOLS}/cso-lut)