build: improve cmake scripts

.gitignore

@@ -0,0 +1 @@
+/build/

CMakeLists.txt

@@ -1,26 +1,73 @@
-# CMakeLists files in this project can
+cmake_minimum_required(VERSION 3.5.0)
-# refer to the root source directory of the project as ${HELLO_SOURCE_DIR} and
-# to the root binary directory of the project as ${HELLO_BINARY_DIR}.
-
-cmake_minimum_required (VERSION 2.8.11)
 project(cpp-jwt)
 
-#SET (CMAKE_CXX_COMPILER /usr/local/bin/g++)
+option(CPP_JWT_BUILD_EXAMPLES "build examples" ON)
-SET( CMAKE_CXX_FLAGS  "-std=c++14 -Wall -Wextra" )
+option(CPP_JWT_BUILD_TESTS "build examples" ON)
 
-include_directories (include)
+# only set compiler flags if we are the main project, otherwise let the main
+# project decide on the flags
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall -Wextra")
+else()
+
+endif()
 
 find_package(OpenSSL REQUIRED)
-include_directories(${OPENSSL_INCLUDE_DIR})
 
+# ##############################################################################
+# LIBRARY
+# ##############################################################################
+
+add_library(${PROJECT_NAME} INTERFACE)
+target_include_directories(
+  ${PROJECT_NAME}
+  INTERFACE $<BUILD_INTERFACE:${${PROJECT_NAME}_SOURCE_DIR}/include>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+target_link_libraries(${PROJECT_NAME} INTERFACE OpenSSL::SSL)
+target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_14)
+
+# ##############################################################################
+# TESTS
+# ##############################################################################
+
+if(CPP_JWT_BUILD_TESTS)
   find_package(GTest REQUIRED)
   include_directories(${GTEST_INCLUDE_DIRS})
-
   enable_testing()
-
   # Recurse into the "Hello" and "Demo" subdirectories. This does not actually
   # cause another cmake executable to run. The same process will walk through
   # the project's entire directory structure.
   add_subdirectory(tests)
+endif()
 
+# ##############################################################################
+# EXAMPLES
+# ##############################################################################
+
+if(CPP_JWT_BUILD_EXAMPLES)
   add_subdirectory(examples)
+endif()
+
+# ##############################################################################
+# INSTALL
+# ##############################################################################
+
+include(GNUInstallDirs)
+install(
+  TARGETS ${PROJECT_NAME}
+  EXPORT ${PROJECT_NAME}_Targets
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/detail
+        DESTINATION include/jwt)
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/impl
+        DESTINATION include/jwt)
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/json
+        DESTINATION include/jwt)
+install(
+  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/
+  DESTINATION include/jwt
+  FILES_MATCHING
+  PATTERN "*.hpp")

examples/CMakeLists.txt

@@ -1,18 +1,24 @@
-
+set(CERT_ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/rsa_256")
-include_directories(${OPENSSL_INCLUDE_DIR})
+set(CMAKE_CXX_FLAGS
-
+    "${CMAKE_CXX_FLAGS} -DCERT_ROOT_DIR=\"\\\"${CERT_ROOT_DIR}\\\"\"")
-SET(CERT_ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/rsa_256")
-SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -DCERT_ROOT_DIR=\"\\\"${CERT_ROOT_DIR}\\\"\"")
 
 add_executable(simple_ex1 simple_ex1.cc)
-target_link_libraries(simple_ex1 ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(simple_ex1 OpenSSL::SSL ${PROJECT_NAME})
-add_test(NAME simple_ex1 COMMAND ./simple_ex1 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+add_test(
+  NAME simple_ex1
+  COMMAND ./simple_ex1
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(simple_ex2 simple_ex2.cc)
-target_link_libraries(simple_ex2 ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(simple_ex2 OpenSSL::SSL ${PROJECT_NAME})
-add_test(NAME simple_ex2 COMMAND ./simple_ex2 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+add_test(
+  NAME simple_ex2
+  COMMAND ./simple_ex2
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(simple_ex3_rsa simple_ex3_rsa.cc)
-target_link_libraries(simple_ex3_rsa ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(simple_ex3_rsa OpenSSL::SSL ${PROJECT_NAME})
-add_test(NAME simple_ex3_rsa COMMAND ./simple_ex3_rsa WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+add_test(
-
+  NAME simple_ex3_rsa
+  COMMAND ./simple_ex3_rsa
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})

tests/CMakeLists.txt

@@ -1,33 +1,31 @@
 
-include_directories(${OPENSSL_INCLUDE_DIR})
-
 SET(CERT_ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/certs")
 SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -DCERT_ROOT_DIR=\"\\\"${CERT_ROOT_DIR}\\\"\"")
 
 add_executable(test_jwt_object test_jwt_object.cc)
-target_link_libraries(test_jwt_object ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_object OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_object COMMAND ./test_jwt_object WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_encode test_jwt_encode.cc)
-target_link_libraries(test_jwt_encode ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_encode OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_encode COMMAND ./test_jwt_encode WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_decode test_jwt_decode.cc)
-target_link_libraries(test_jwt_decode ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_decode OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_decode COMMAND ./test_jwt_decode WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_decode_verifiy test_jwt_decode_verifiy.cc)
-target_link_libraries(test_jwt_decode_verifiy ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_decode_verifiy OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_decode_verifiy COMMAND ./test_jwt_decode_verifiy WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_decode_verifiy_with_exception test_jwt_decode_verifiy_with_exception.cc)
-target_link_libraries(test_jwt_decode_verifiy_with_exception ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_decode_verifiy_with_exception OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_decode_verifiy_with_exception COMMAND ./test_jwt_decode_verifiy_with_exception WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_rsa test_jwt_rsa.cc)
-target_link_libraries(test_jwt_rsa ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES} )
+target_link_libraries(test_jwt_rsa OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_rsa COMMAND ./test_jwt_rsa WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
 
 add_executable(test_jwt_es test_jwt_es.cc)
-target_link_libraries(test_jwt_es ${OPENSSL_LIBRARIES} ${GTEST_LIBRARIES})
+target_link_libraries(test_jwt_es OpenSSL::SSL GTest::GTest GTest::Main ${PROJECT_NAME})
 add_test(NAME test_jwt_es COMMAND ./test_jwt_es WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})