Build tests and tools with Hunter

Dockerfile

@@ -0,0 +1,26 @@
+FROM ubuntu:20.04
+
+ARG TOOLCHAIN_NAME=gcc-9-cxx17-fpic
+ARG BUILD_TYPE=RelWithDebInfo
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    cmake \
+    gcc-9 \
+    g++-9 \
+    ca-certificates \
+    make
+
+WORKDIR /root/assimp
+COPY ./cmake ./cmake
+COPY ./cmake-modules ./cmake-modules
+COPY ./code ./code
+COPY ./include ./include
+COPY ./samples ./samples
+COPY ./test ./test
+COPY ./tools ./tools
+COPY ./*.in ./
+COPY CMakeLists.txt ./
+
+RUN cmake -DBUILD_SHARED_LIBS=OFF -DASSIMP_BUILD_ASSIMP_TOOLS=ON -DASSIMP_BUILD_SAMPLES=OFF -DASSIMP_BUILD_TESTS=ON -DASSIMP_INSTALL_PDB=OFF -DASSIMP_IGNORE_GIT_HASH=ON -DASSIMP_HUNTER_ENABLED=ON -H. -B_builds/${TOOLCHAIN_NAME}-${BUILD_TYPE} -DCMAKE_TOOLCHAIN_FILE=./cmake/polly/${TOOLCHAIN_NAME}.cmake -DCMAKE_BUILD_TYPE=${BUILD_TYPE}
+
+RUN make -C _builds/${TOOLCHAIN_NAME}-${BUILD_TYPE} -j 4

test/CMakeLists.txt

@@ -39,12 +39,18 @@
 cmake_minimum_required( VERSION 3.0 )
 
 INCLUDE_DIRECTORIES(
-    ${Assimp_SOURCE_DIR}/contrib/gtest/include
-    ${Assimp_SOURCE_DIR}/contrib/gtest/
     ${Assimp_SOURCE_DIR}/test/unit
     ${Assimp_SOURCE_DIR}/include
     ${Assimp_SOURCE_DIR}/code
 )
+
+if(NOT ASSIMP_HUNTER_ENABLED)
+  INCLUDE_DIRECTORIES(
+    ${Assimp_SOURCE_DIR}/contrib/gtest/include
+    ${Assimp_SOURCE_DIR}/contrib/gtest/
+  )
+endif()
+
 if (MSVC)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING")
 endif()
@@ -197,7 +203,6 @@ SOURCE_GROUP( UnitTests\\Math         FILES  ${MATH} )
 SOURCE_GROUP( UnitTests\\PostProcess  FILES  ${POST_PROCESSES})
 
 add_executable( unit
-    ../contrib/gtest/src/gtest-all.cc
     unit/CCompilerTest.c
     unit/Main.cpp
     ../code/Common/Version.cpp
@@ -208,6 +213,14 @@ add_executable( unit
     ${POST_PROCESSES}
 )
 
+if(ASSIMP_HUNTER_ENABLED)
+    hunter_add_package(GTest)
+    find_package(GTest CONFIG REQUIRED)
+    target_link_libraries(unit GTest::gtest_main GTest::gmock)
+else()
+    target_sources(unit PUBLIC ../contrib/gtest/src/gtest-all.cc)
+endif()
+
 TARGET_USE_COMMON_OUTPUT_DIRECTORY(unit)
 
 add_definitions(-DASSIMP_TEST_MODELS_DIR="${CMAKE_CURRENT_LIST_DIR}/models")
@@ -222,7 +235,7 @@ ELSE()
 ENDIF()
 
 IF(MSVC)
-		add_definitions(-D_CRT_SECURE_NO_WARNINGS)
+    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 ENDIF()
 
 target_link_libraries( unit assimp ${platform_libs} )
@@ -230,4 +243,3 @@ target_link_libraries( unit assimp ${platform_libs} )
 add_subdirectory(headercheck)
 
 add_test( unittests unit )
-