From 3abba6bcbf044a6a5611260a8d7bf84b9c96bcb7 Mon Sep 17 00:00:00 2001
From: Mathias Kraus <elboberido@m-hias.de>
Date: Thu, 9 May 2024 21:19:08 +0200
Subject: [PATCH] [#210] Initial cmake integration with example

---
 CMakeLists.txt                                | 12 +++++++++
 examples/c/CMakeLists.txt                     |  4 +++
 examples/c/discovery/CMakeLists.txt           |  8 ++++++
 examples/c/discovery/src/main.c               |  6 +++++
 iceoryx2-lang/CMakeLists.txt                  |  8 ++++++
 iceoryx2-lang/c/CMakeLists.txt                | 25 +++++++++++++++++++
 iceoryx2-lang/c/cmake/Config.cmake.in         |  5 ++++
 .../c/cmake/iceoryx2_lang_cConfig.cmake       |  7 ++++++
 8 files changed, 75 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 examples/c/CMakeLists.txt
 create mode 100644 examples/c/discovery/CMakeLists.txt
 create mode 100644 examples/c/discovery/src/main.c
 create mode 100644 iceoryx2-lang/CMakeLists.txt
 create mode 100644 iceoryx2-lang/c/CMakeLists.txt
 create mode 100644 iceoryx2-lang/c/cmake/Config.cmake.in
 create mode 100644 iceoryx2-lang/c/cmake/iceoryx2_lang_cConfig.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 000000000..9ab2c7dcc
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.28)
+project(iceoryx2)
+
+#TODO build iceoryx2
+#TODO how to handle feature flags
+
+add_subdirectory(iceoryx2-lang)
+
+#TODO add flags
+# if(EXAMPLES)
+    add_subdirectory(examples/c)
+# endif()
diff --git a/examples/c/CMakeLists.txt b/examples/c/CMakeLists.txt
new file mode 100644
index 000000000..c14a65d80
--- /dev/null
+++ b/examples/c/CMakeLists.txt
@@ -0,0 +1,4 @@
+cmake_minimum_required(VERSION 3.28)
+project(examples_c)
+
+add_subdirectory(discovery)
diff --git a/examples/c/discovery/CMakeLists.txt b/examples/c/discovery/CMakeLists.txt
new file mode 100644
index 000000000..966315258
--- /dev/null
+++ b/examples/c/discovery/CMakeLists.txt
@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.28)
+project(example_c_discovery)
+
+find_package(iceoryx2_lang_c REQUIRED)
+
+add_executable(example_c_discovery src/main.c)
+
+target_link_libraries(example_c_discovery iceoryx2_lang_c)
diff --git a/examples/c/discovery/src/main.c b/examples/c/discovery/src/main.c
new file mode 100644
index 000000000..89a286ecf
--- /dev/null
+++ b/examples/c/discovery/src/main.c
@@ -0,0 +1,6 @@
+
+#include "iox2/iceoryx2.h"
+
+int main(void) {
+    zero_copy_service_list();
+}
diff --git a/iceoryx2-lang/CMakeLists.txt b/iceoryx2-lang/CMakeLists.txt
new file mode 100644
index 000000000..2f1342047
--- /dev/null
+++ b/iceoryx2-lang/CMakeLists.txt
@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.28)
+project(iceoryx2-lang)
+
+add_subdirectory(c)
+
+if(BUILD_TESTING)
+    add_subdirectory(tests/tbd)
+endif()
diff --git a/iceoryx2-lang/c/CMakeLists.txt b/iceoryx2-lang/c/CMakeLists.txt
new file mode 100644
index 000000000..953457eec
--- /dev/null
+++ b/iceoryx2-lang/c/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.28)
+project(iceoryx2_lang_c)
+
+# TODO remove once generation works as expected ... have a look at iceoryx-rs
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/iceoryx2.h"
+  "${CMAKE_BINARY_DIR}/generated/include/iox2/iceoryx2.h" @ONLY)
+
+set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")
+list(APPEND CMAKE_FIND_LIBRARY_SUFFIXES ".so")
+list(APPEND CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
+
+find_library(ICEORYX2_LANG_C_LIB ${PROJECT_NAME} HINTS ${iceoryx2_SOURCE_DIR}/target/release)
+
+add_library(${PROJECT_NAME} INTERFACE)
+
+target_include_directories(${PROJECT_NAME} INTERFACE ${CMAKE_BINARY_DIR}/generated/include)
+
+target_link_libraries(${PROJECT_NAME} INTERFACE ${ICEORYX2_LANG_C_LIB})
+
+########## find_package in source tree ##########
+set(${PROJECT_NAME}_DIR ${PROJECT_SOURCE_DIR}/cmake
+    CACHE FILEPATH
+    "${PROJECT_NAME}Config.cmake to make find_package(${PROJECT_NAME}) work in source tree!"
+    FORCE
+)
diff --git a/iceoryx2-lang/c/cmake/Config.cmake.in b/iceoryx2-lang/c/cmake/Config.cmake.in
new file mode 100644
index 000000000..5bcba53b0
--- /dev/null
+++ b/iceoryx2-lang/c/cmake/Config.cmake.in
@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+
+# TODO check if this is correct
+include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
+check_required_components("@PROJECT_NAME@")
diff --git a/iceoryx2-lang/c/cmake/iceoryx2_lang_cConfig.cmake b/iceoryx2-lang/c/cmake/iceoryx2_lang_cConfig.cmake
new file mode 100644
index 000000000..aa9b384eb
--- /dev/null
+++ b/iceoryx2-lang/c/cmake/iceoryx2_lang_cConfig.cmake
@@ -0,0 +1,7 @@
+if(NOT ${CMAKE_FIND_PACKAGE_NAME}_FOUND_PRINTED)
+    message(STATUS "The package '${CMAKE_FIND_PACKAGE_NAME}' is used in source code version.")
+    set(${CMAKE_FIND_PACKAGE_NAME}_FOUND_PRINTED true CACHE INTERNAL "")
+endif()
+
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+