Update CI infrastructure

Author: mfasi

.github/workflows/run_cpp_tests.yml

@@ -2,7 +2,9 @@ name: C++ tests
 
 on:
   push:
+    branches: [main, dev]
   pull_request:
+    branches: [main]
 
 jobs:
   build:
@@ -17,7 +19,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Install dependencies
+    - name: Install Catch2
       run: |
         git clone https://github.com/catchorg/Catch2.git
         cd Catch2
@@ -37,5 +39,5 @@ jobs:
 
     - name: Run tests
       run: |
-        cd build/tests
+        cd build
         ctest -C Release --output-on-failure --verbose

CMakeLists.txt

@@ -19,16 +19,15 @@ set(CMAKE_EXE_LINKER_FLAGS_DEBUG "-g -Og -Wall -Wextra")
 set(CMAKE_CXX_FLAGS_RELEASE "-O3 -Wall -Wextra")
 set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-O3 -Wall -Wextra")
 
-if(NOT DEFINED BUILD_MEX)
-    set(BUILD_MEX True)
-endif()
+# Build MEX interface.
+option(BUILD_MEX "Build MEX interface" True)
 if (BUILD_MEX)
     add_subdirectory("mex")
 endif()
 
-if(NOT DEFINED BUILD_TESTS)
-    set(BUILD_TESTS False)
-endif()
+# Build tests.
+option(BUILD_TESTS "Run Catch2 tests" False)
 if (BUILD_TESTS)
+    enable_testing()
     add_subdirectory("tests")
 endif()