Change CMakeLists.txt to make it easier to import the library from other projects

CMakeLists.txt

@@ -20,51 +20,66 @@ endif (MSVC)
 
 include_directories(Program)
 
-# Build Executable
-add_executable(bin
-        Program/main.cpp
-        ${src_files})
+# object to be used by both static and shared (compile only once)
+add_library(objlib OBJECT ${src_files})
+set_property(TARGET objlib PROPERTY POSITION_INDEPENDENT_CODE 1)
 
-set_target_properties(bin PROPERTIES OUTPUT_NAME hgs)
+# runtime library
+add_library(lib SHARED $<TARGET_OBJECTS:objlib>)
+set_target_properties(lib PROPERTIES OUTPUT_NAME hgscvrp)
 
-# Test Executable
-include(CTest)
-add_test(NAME    bin_test_X-n101-k25
-         COMMAND ${CMAKE_COMMAND}   -DINSTANCE=X-n101-k25
-                                    -DCOST=27591
-                                    -DROUND=1
-                                    -P ${CMAKE_CURRENT_SOURCE_DIR}/Test/TestExecutable.cmake)
-add_test(NAME    bin_test_X-n106-k14
-         COMMAND ${CMAKE_COMMAND}   -DINSTANCE=X-n110-k13
-                                    -DCOST=14971
-                                    -DROUND=1
-                                    -P ${CMAKE_CURRENT_SOURCE_DIR}/Test/TestExecutable.cmake)
+if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    # We're in the root, build everything
+    # static library
+    add_library(lib_static STATIC $<TARGET_OBJECTS:objlib>)
+    # if static and runtime libraries use name "hgscvrp", MSVC will overwrite one
+    # of them, because both STATIC and SHARED builds create "hgscvrp.lib"
+    set_target_properties(lib_static PROPERTIES OUTPUT_NAME hgscvrp_static)
 
-# Test Executable: Instances with Duration, without Rounding
-add_test(NAME    bin_test_CMT6
-        COMMAND ${CMAKE_COMMAND}    -DINSTANCE=CMT6
-                                    -DCOST=555.43
-                                    -DROUND=0
-                                    -P ${CMAKE_CURRENT_SOURCE_DIR}/Test/TestExecutable.cmake)
-add_test(NAME    bin_test_CMT7
-        COMMAND ${CMAKE_COMMAND}    -DINSTANCE=CMT7
-                                    -DCOST=909.675
-                                    -DROUND=0
-                                    -P ${CMAKE_CURRENT_SOURCE_DIR}/Test/TestExecutable.cmake)
+    # Build Executable
 
-# Build Library
-add_library(lib SHARED ${src_files})
-set_target_properties(lib PROPERTIES OUTPUT_NAME hgscvrp)
+    add_executable(bin Program/main.cpp)
+    target_link_libraries(bin PRIVATE lib_static)
+    set_target_properties(bin PROPERTIES OUTPUT_NAME hgs)
+
+
+    # Test Executable
+
+    include(CTest)
+    add_test(NAME    bin_test_X-n101-k25
+             COMMAND ${CMAKE_COMMAND}   -DINSTANCE=X-n101-k25
+                                        -DCOST=27591
+                                        -DROUND=1
+                                        -P ${PROJECT_SOURCE_DIR}/Test/TestExecutable.cmake)
+    add_test(NAME    bin_test_X-n106-k14
+             COMMAND ${CMAKE_COMMAND}   -DINSTANCE=X-n110-k13
+                                        -DCOST=14971
+                                        -DROUND=1
+                                        -P ${PROJECT_SOURCE_DIR}/Test/TestExecutable.cmake)
+
+    # Test Executable: Instances with Duration, without Rounding
+    add_test(NAME    bin_test_CMT6
+            COMMAND ${CMAKE_COMMAND}    -DINSTANCE=CMT6
+                                        -DCOST=555.43
+                                        -DROUND=0
+                                        -P ${PROJECT_SOURCE_DIR}/Test/TestExecutable.cmake)
+    add_test(NAME    bin_test_CMT7
+            COMMAND ${CMAKE_COMMAND}    -DINSTANCE=CMT7
+                                        -DCOST=909.675
+                                        -DROUND=0
+                                        -P ${PROJECT_SOURCE_DIR}/Test/TestExecutable.cmake)
+
+    # Test Library
+    add_subdirectory(Test/Test-c/)
+    add_test(NAME       lib_test_c
+             COMMAND    lib_test_c)
 
-# Test Library
-add_subdirectory(Test/Test-c/)
-add_test(NAME       lib_test_c
-         COMMAND    lib_test_c)
+    # Install
+    install(TARGETS lib
+            DESTINATION lib)
+    install(TARGETS bin
+            DESTINATION bin)
+    install(FILES Program/AlgorithmParameters.h Program/C_Interface.h
+            DESTINATION include)
+endif()
 
-# Install
-install(TARGETS lib
-        DESTINATION lib)
-install(TARGETS bin
-        DESTINATION bin)
-install(FILES Program/AlgorithmParameters.h Program/C_Interface.h
-        DESTINATION include)

Test/Test-c/CMakeLists.txt

@@ -2,13 +2,10 @@ cmake_minimum_required(VERSION 3.15)
 project(HGS_Test_c)
 set(CMAKE_C_STANDARD 99)
 
-include_directories(${CMAKE_SOURCE_DIR}/Program)
+add_executable(lib_test_c test.c)
 
-add_executable(lib_test_c
-        test.c
-        ${CMAKE_SOURCE_DIR}/Program/C_Interface.h
-        ${CMAKE_SOURCE_DIR}/Program/AlgorithmParameters.h
-        )
-
-target_link_libraries(lib_test_c -lm lib)  # need -lm to link math library
+IF (NOT WIN32)
+  target_link_libraries(lib_test_c m)
+ENDIF()
+target_link_libraries(lib_test_c lib_static)