gnu: Add cppdap.

* gnu/packages/debug.scm (cppdap): New variable.
* gnu/packages/patches/cppdap-add-CPPDAP_USE_EXTERNAL_GTEST_PACKAGE.patch: New
patch.
* gnu/local.mk (dist_patch_DATA): Register it.

Signed-off-by: Zheng Junjie <[email protected]>
Change-Id: I328ca0c01787defcc9d18f4ccd7762c86412cca7
Signed-off-by: Zheng Junjie <[email protected]>

1 files changed, 103 insertions, 0 deletions

diff --git a/gnu/packages/patches/cppdap-add-CPPDAP_USE_EXTERNAL_GTEST_PACKAGE.patch b/gnu/packages/patches/cppdap-add-CPPDAP_USE_EXTERNAL_GTEST_PACKAGE.patch
new file mode 100644
index 0000000000..ab19edbf82
--- /dev/null
+++ b/gnu/packages/patches/cppdap-add-CPPDAP_USE_EXTERNAL_GTEST_PACKAGE.patch
@@ -0,0 +1,103 @@
+from https://github.com/google/cppdap/pull/124
+
+From 40d9eaf3b6eca2ab8d5558e8935d56a75bd97183 Mon Sep 17 00:00:00 2001
+From: topazus <[email protected]>
+Date: Wed, 27 Dec 2023 19:56:49 +0800
+Subject: [PATCH] CMake: add CPPDAP_USE_EXTERNAL_GTEST_PACKAGE option
+
+---
+ CMakeLists.txt | 35 +++++++++++++++++++++++++----------
+ 1 file changed, 25 insertions(+), 10 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1b3c321..7292f3c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -40,6 +40,7 @@ option_if_not_defined(CPPDAP_INSTALL_VSCODE_EXAMPLES "Build and install dap exam
+ option_if_not_defined(CPPDAP_USE_EXTERNAL_NLOHMANN_JSON_PACKAGE "Use nlohmann_json with find_package() instead of building internal submodule" OFF)
+ option_if_not_defined(CPPDAP_USE_EXTERNAL_RAPIDJSON_PACKAGE "Use RapidJSON with find_package()" OFF)
+ option_if_not_defined(CPPDAP_USE_EXTERNAL_JSONCPP_PACKAGE "Use JsonCpp with find_package()" OFF)
++option_if_not_defined(CPPDAP_USE_EXTERNAL_GTEST_PACKAGE "Use googletest with find_package()" OFF)
+ 
+ ###########################################################
+ # Directories
+@@ -59,7 +60,7 @@ set_if_not_defined(CPPDAP_GOOGLETEST_DIR  ${CPPDAP_THIRD_PARTY_DIR}/googletest)
+ ###########################################################
+ # Submodules
+ ###########################################################
+-if(CPPDAP_BUILD_TESTS)
++if(CPPDAP_BUILD_TESTS AND NOT CPPDAP_USE_EXTERNAL_GTEST_PACKAGE)
+     if(NOT EXISTS ${CPPDAP_GOOGLETEST_DIR}/.git)
+         message(WARNING "third_party/googletest submodule missing.")
+         message(WARNING "Run: `git submodule update --init` to build tests.")
+@@ -161,7 +162,7 @@ function(cppdap_set_json_links target)
+         target_link_libraries(${target} PRIVATE JsonCpp::JsonCpp)
+     else()
+         target_include_directories(${target} PRIVATE "${CPPDAP_JSON_DIR}/include/")
+-    endif()    
++    endif()
+ endfunction(cppdap_set_json_links)
+ 
+ function(cppdap_set_target_options target)
+@@ -247,7 +248,7 @@ write_basic_package_version_file(
+ )
+ configure_package_config_file(
+ 	${CPPDAP_CMAKE_CONFIG_TEMPLATE}
+-	"${CPPDAP_CMAKE_PROJECT_CONFIG_FILE}" 
++	"${CPPDAP_CMAKE_PROJECT_CONFIG_FILE}"
+ 	INSTALL_DESTINATION ${CPPDAP_CONFIG_INSTALL_DIR}
+ )
+ 
+@@ -276,6 +277,8 @@ DESTINATION ${CPPDAP_CONFIG_INSTALL_DIR})
+ 
+ # tests
+ if(CPPDAP_BUILD_TESTS)
++    enable_testing()
++
+     set(DAP_TEST_LIST
+         ${CPPDAP_SRC_DIR}/any_test.cpp
+         ${CPPDAP_SRC_DIR}/chan_test.cpp
+@@ -290,16 +293,24 @@ if(CPPDAP_BUILD_TESTS)
+         ${CPPDAP_SRC_DIR}/traits_test.cpp
+         ${CPPDAP_SRC_DIR}/typeinfo_test.cpp
+         ${CPPDAP_SRC_DIR}/variant_test.cpp
+-        ${CPPDAP_GOOGLETEST_DIR}/googletest/src/gtest-all.cc
+     )
+ 
+-    set(DAP_TEST_INCLUDE_DIR
+-        ${CPPDAP_GOOGLETEST_DIR}/googlemock/include/
+-        ${CPPDAP_GOOGLETEST_DIR}/googletest/
+-        ${CPPDAP_GOOGLETEST_DIR}/googletest/include/
+-    )
++    if(CPPDAP_USE_EXTERNAL_GTEST_PACKAGE)
++        find_package(GTest REQUIRED)
++    else()
++        list(APPEND DAP_TEST_LIST
++            ${CPPDAP_GOOGLETEST_DIR}/googletest/src/gtest-all.cc
++        )
++
++        set(DAP_TEST_INCLUDE_DIR
++            ${CPPDAP_GOOGLETEST_DIR}/googlemock/include/
++            ${CPPDAP_GOOGLETEST_DIR}/googletest/
++            ${CPPDAP_GOOGLETEST_DIR}/googletest/include/
++        )
++    endif()
+ 
+     add_executable(cppdap-unittests ${DAP_TEST_LIST})
++    add_test(NAME cppdap-unittests COMMAND cppdap-unittests)
+ 
+     target_include_directories(cppdap-unittests PUBLIC ${DAP_TEST_INCLUDE_DIR} )
+     set_target_properties(cppdap-unittests PROPERTIES
+@@ -312,7 +323,11 @@ if(CPPDAP_BUILD_TESTS)
+     endif()
+ 
+     cppdap_set_target_options(cppdap-unittests)
+-    target_link_libraries(cppdap-unittests PRIVATE cppdap)
++    if(CPPDAP_USE_EXTERNAL_GTEST_PACKAGE)
++        target_link_libraries(cppdap-unittests PRIVATE cppdap GTest::gtest)
++    else()
++        target_link_libraries(cppdap-unittests PRIVATE cppdap)
++    endif()
+ endif(CPPDAP_BUILD_TESTS)
+ 
+ # fuzzer