build: use cmake and ninja

This change begins the transition to cmake and ninja instead
of make for building.

There is some work to be done in terms of generating coverage
data though, as 'ninja cov' fails for some reason.

Fixes #285

Signed-off-by: Christopher Friedt <[email protected]>

Author: cfriedt

.codecov.yml

@@ -1,4 +1,3 @@
 ignore:
   - "util/"
   - "*-test.cpp"
-

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
 
     - name: Setup C++ CEnvironment
       run: |
-        sudo apt install -y cmake clang clang-tidy gcovr
+        sudo apt install -y cmake gcovr
         sudo sh .scripts/build-and-install-libgtest-libraries.sh
 
     - name: Build C++

.gitignore

@@ -6,3 +6,15 @@
 .*project
 .settings/
 __pycache__/
+CMakeFiles/
+CMakeCache.txt
+cmake_install.cmake
+.ninja_deps
+.ninja_log
+CTestTestfile.cmake
+build.ninja
+rules.ninja
+*.capture
+*.info
+*.total
+Testing/

CMakeLists.txt

@@ -0,0 +1,44 @@
+# Copyright (c) 2021 Christopher Friedt
+#
+# SPDX-License-Identifier: MIT
+
+project(leetcode)
+cmake_minimum_required(VERSION 3.13.0)
+set(CMAKE_CXX_STANDARD 14)
+
+enable_testing()
+
+find_package(PkgConfig)
+pkg_search_module(GTEST REQUIRED gtest)
+
+include_directories(util)
+
+# all warnings as errors
+add_compile_options(-Wall -Wextra -Werror)
+
+# code coverage
+if(CMAKE_COMPILER_IS_GNUCXX)
+  set(CMAKE_BUILD_TYPE "Debug")
+  set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+  include(CodeCoverage)
+  set(COVERAGE_EXCLUDES "util/*")
+  append_coverage_compiler_flags()
+  add_custom_target(cov)
+endif()
+
+file(GLOB APP_SOURCES *-test.cpp)
+foreach(src ${APP_SOURCES})
+  get_filename_component(exe ${src} NAME_WLE)
+  string(REPLACE "-test" "" unit ${exe})
+
+  add_executable(${exe} ${src})
+  target_compile_options(${exe} PUBLIC ${GTEST_CFLAGS})
+  target_link_libraries(${exe} ${GTEST_LDFLAGS} -lgtest_main)
+  add_test(NAME ${unit} COMMAND ${exe})
+
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    string(REPLACE "-test" "-cov" cov ${exe})
+    setup_target_for_coverage_gcovr_html(NAME ${cov} EXECUTABLE ${exe})
+    add_dependencies(cov ${cov})
+  endif()
+endforeach(src ${APP_SOURCES})