issue #13: reworked CMakeLists.txt

.gitignore

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

CMakeLists.txt

@@ -2,6 +2,8 @@ cmake_minimum_required(VERSION 3.8.2 FATAL_ERROR)
 
 project(boost_matheval CXX)
 
+include(GNUInstallDirs)
+
 # Default build type is Debug
 if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the build type" FORCE)
@@ -21,31 +23,49 @@ if(WITH_COVERAGE)
   endif()
 endif()
 
-if(CMAKE_VERSION VERSION_GREATER 3.5.2 AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-  option(WITH_CLANG_TIDY "Run Clang-Tidy during compilation" OFF)
-endif()
-if(WITH_CLANG_TIDY)
-  string(REGEX REPLACE "^([1-9]+\\.[0-9]+).*$" "\\1" CLANG_MINOR_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
-  find_program(
+option(WITH_CLANG_TIDY "Run Clang-Tidy during compilation" OFF)
+
+# Find clang-tidy executable (no matter if building with gcc or clang)
+string(REGEX REPLACE "^([1-9]+\\.[0-9]+).*$" "\\1" CLANG_MINOR_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
+find_program(
     CLANG_TIDY_EXE
     NAMES "clang-tidy-${CLANG_MINOR_VERSION}" "clang-tidy"
     DOC "Path to clang-tidy executable"
-    )
+)
+
+if(WITH_CLANG_TIDY)
   if(NOT CLANG_TIDY_EXE)
-    message(STATUS "clang-tidy not found.")
+    message(FATAL_ERROR "clang-tidy was enabled but no executable found.")
   else()
     message(STATUS "clang-tidy found: ${CLANG_TIDY_EXE}")
     set(CMAKE_CXX_CLANG_TIDY "${CLANG_TIDY_EXE}"
       "-checks=-*,bugprone-*,cert-*,clang-analyzer-*,cppcoreguidelines-*,hicpp-*,misc-*,modernize-*,performance-*,readability-*"
-      "-header-filter=.*")
-      #"-warnings-as-errors=*")
+      "-header-filter=.*"
+      "-warnings-as-errors=*"
+    )
   endif()
 endif()
 
+
 # Subdirectories
+add_subdirectory(src/qi)
+add_subdirectory(src/x3)
+add_subdirectory(doc/doxygen)
+add_subdirectory(examples)
+add_subdirectory(tests)
+
+
+
+# Install
+install(
+    DIRECTORY include/
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+    FILES_MATCHING PATTERN "*.hpp"
+)
+
+install(
+    EXPORT ${PROJECT_NAME}
+    NAMESPACE   matheval::
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}/
+)
 
-add_subdirectory(src/qi EXCLUDE_FROM_ALL)
-add_subdirectory(src/x3 EXCLUDE_FROM_ALL)
-add_subdirectory(doc/doxygen EXCLUDE_FROM_ALL)
-add_subdirectory(examples EXCLUDE_FROM_ALL)
-add_subdirectory(tests EXCLUDE_FROM_ALL)

cmake/FindReadline.cmake

@@ -4,6 +4,6 @@ find_path(READLINE_INCLUDE_DIR NAMES readline/readline.h)
 
 find_library(READLINE_LIBRARY NAMES readline)
 
-find_package_handle_standard_args(READLINE DEFAULT_MSG READLINE_LIBRARY READLINE_INCLUDE_DIR)
+find_package_handle_standard_args(Readline DEFAULT_MSG READLINE_LIBRARY READLINE_INCLUDE_DIR)
 
 mark_as_advanced(READLINE_INCLUDE_DIR READLINE_LIBRARY)

src/qi/CMakeLists.txt

@@ -1,22 +1,37 @@
+find_package(Boost 1.65.1 REQUIRED)
+
 add_library(matheval.qi
-  ast_adapted.hpp
-  ast.hpp
-  evaluator.cpp
-  evaluator.hpp
-  matheval.cpp
-  math.hpp
-  parser.cpp
-  parser_def.hpp
-  parser.hpp
-  )
+    ast_adapted.hpp
+    ast.hpp
+    evaluator.cpp
+    evaluator.hpp
+    matheval.cpp
+    math.hpp
+    parser.cpp
+    parser_def.hpp
+    parser.hpp
+)
 target_include_directories(matheval.qi
-  PUBLIC ../../include/matheval/qi
-  )
+    PUBLIC 
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../../include/matheval/qi>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/matheval/qi>
+)
 target_compile_features(matheval.qi
-  PUBLIC cxx_std_98
-  )
-find_package(Boost 1.65.1 REQUIRED)
+    PUBLIC 
+        cxx_std_98
+)
 target_link_libraries(matheval.qi
-  PRIVATE Boost::boost
-  )
+    PUBLIC
+        Boost::boost
+)
+
+set_target_properties(matheval.qi PROPERTIES EXPORT_NAME qi)
+
 add_library(matheval::qi ALIAS matheval.qi)
+
+install(
+    TARGETS matheval.qi 
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    EXPORT ${PROJECT_NAME}
+)
+

src/x3/CMakeLists.txt

@@ -1,22 +1,36 @@
+find_package(Boost 1.65.1 REQUIRED)
+
 add_library(matheval.x3
-  ast_adapted.hpp
-  ast.hpp
-  evaluator.cpp
-  evaluator.hpp
-  matheval.cpp
-  math.hpp
-  parser.cpp
-  parser_def.hpp
-  parser.hpp
-  )
+    ast_adapted.hpp
+    ast.hpp
+    evaluator.cpp
+    evaluator.hpp
+    matheval.cpp
+    math.hpp
+    parser.cpp
+    parser_def.hpp
+    parser.hpp
+)
 target_include_directories(matheval.x3
-  PUBLIC ../../include/matheval/x3
-  )
+    PUBLIC 
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../../include/matheval/x3>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/matheval/x3>
+)
 target_compile_features(matheval.x3
-  PUBLIC cxx_std_14
-  )
-find_package(Boost 1.65.1 REQUIRED)
+    PUBLIC 
+        cxx_std_14
+)
 target_link_libraries(matheval.x3
-  PRIVATE Boost::boost
-  )
+    PUBLIC
+        Boost::boost
+)
+
+set_target_properties(matheval.x3 PROPERTIES EXPORT_NAME x3)
+
 add_library(matheval::x3 ALIAS matheval.x3)
+
+install(
+    TARGETS matheval.x3
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    EXPORT ${PROJECT_NAME}
+)