Install debug build binaries to a separate folder (#39)

* Install debug build binaries to a separate folder

This will mirror the directory structure used by vcpkg:
* Debug binaries will get installed to a subdirectory debug/lib for
  ARCHIVE and LIBRARY artifacts and debug/bin for RUNTIME artifacts
* All other configurations install binaries directly to lib and bin
  respectively
* Other artifacts go to the same include/share/... directories for all
  configurations, including Debug

* Build both debug and release configurations on CI

.ci/docker/ubuntu.Dockerfile

@@ -26,10 +26,13 @@ ARG cmake_args=
 RUN sysctl vm.mmap_rnd_bits=28
 
 # Build.
-ENV CC="$cc" CXX="$cxx" CMAKE_GENERATOR="Ninja" CMAKE_EXPORT_COMPILE_COMMANDS=on
+ENV CC="$cc" CXX="$cxx" CMAKE_GENERATOR="Ninja Multi-Config" CMAKE_EXPORT_COMPILE_COMMANDS=on
 RUN ls -lR src
 RUN cmake -B build -S . "$cmake_args"
-RUN cmake --build build --verbose
-RUN cmake --build build --target all_verify_interface_header_sets
-RUN cmake --install build --prefix /opt/beman.exemplar
+RUN cmake --build build --config Release --verbose
+RUN cmake --build build --config Release --target all_verify_interface_header_sets
+RUN cmake --install build --config Release --prefix /opt/beman.exemplar
+RUN cmake --build build --config Debug --verbose
+RUN cmake --build build --config Debug --target all_verify_interface_header_sets
+RUN cmake --install build --config Debug --prefix /opt/beman.exemplar
 RUN find /opt/beman.exemplar -type f

.github/workflows/ci_tests.yml

@@ -67,4 +67,5 @@ jobs:
           cache-to: type=gha,mode=max
       - name: Run tests
         run: |
-          docker run ${{ matrix.cfg.id }} ctest --test-dir build
+          docker run ${{ matrix.cfg.id }} ctest --test-dir build -C Release
+          docker run ${{ matrix.cfg.id }} ctest --test-dir build -C Debug

src/beman/exemplar/CMakeLists.txt

@@ -18,8 +18,11 @@ set_target_properties(beman.exemplar PROPERTIES VERIFY_INTERFACE_HEADER_SETS ON)
 install(
   TARGETS beman.exemplar
   EXPORT beman.exemplar
+  DESTINATION $<$<CONFIG:Debug>:debug/>${CMAKE_INSTALL_LIBDIR}
+  RUNTIME DESTINATION $<$<CONFIG:Debug>:debug/>${CMAKE_INSTALL_BINDIR}
   FILE_SET HEADERS
-  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
 
 if(BUILD_TESTING)
   include(GoogleTest)