[cmake] Change directory structure for cpp2py library to match app4triqs

Author: Wentzell

CMakeLists.txt

@@ -51,8 +51,10 @@ MESSAGE(STATUS "LibClang additional flags: ${LIBCLANG_CXX_FLAGS}")
 set(LIBCLANG_CXX_FLAGS "${LIBCLANG_CXX_FLAGS}" CACHE STRING "Additional flags to be passed to libclang when parsing with clang")
 set(LIBCLANG_LOCATION "${LIBCLANG_LOCATION}" CACHE STRING "Location of the libclang library")
 
-# Detect Python
+# --- Python ---
+
 find_package(Python)
+add_library(cpp2py::python_and_numpy ALIAS python_and_numpy)
 install(TARGETS python_and_numpy EXPORT cpp2py-targets)
 
 # find_package(Python3 COMPONENTS Development Interpreter)
@@ -74,8 +76,7 @@ install(TARGETS python_and_numpy EXPORT cpp2py-targets)
 # subdirs
 add_subdirectory(bin)            # Executables
 add_subdirectory(cmake)          # Exported Cpp2Py-Config
-add_subdirectory(include)
-add_subdirectory(lib)
+add_subdirectory(c++/cpp2py)
 
 # The python modules
 add_subdirectory(cpp2py)

c++/cpp2py/CMakeLists.txt

@@ -0,0 +1,22 @@
+add_library(cpp2py signal_handler.cpp exceptions.cpp)
+add_library(cpp2py::cpp2py ALIAS cpp2py)
+
+target_compile_options(cpp2py PRIVATE -std=c++14 -fPIC)
+target_include_directories(cpp2py
+  PUBLIC
+  	$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/c++>
+	$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/c++>
+  )
+
+# Install the library in lib and export the cpp2py target
+install(TARGETS cpp2py EXPORT cpp2py-targets DESTINATION lib)
+install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} DESTINATION include FILES_MATCHING PATTERN "*.hpp" PATTERN "*.h" PATTERN "*.hxx")
+
+# --- Python ---
+
+target_link_libraries(cpp2py PUBLIC python_and_numpy)
+
+# ---------------
+
+# Install the exported targets
+install(EXPORT cpp2py-targets NAMESPACE cpp2py:: DESTINATION lib/cmake/cpp2py)