From fff178a94677314514ed3ea70d5d00bfe3ffb6da Mon Sep 17 00:00:00 2001
From: Mathias Kraus <elboberido@m-hias.de>
Date: Mon, 13 May 2024 10:07:36 +0200
Subject: [PATCH] [#210] Make cmake build the Rust project

---
 CMakeLists.txt                 |  1 -
 iceoryx2-lang/c/CMakeLists.txt | 51 +++++++++++++++++++++++++++++++---
 iceoryx2-lang/c/README.md      | 12 ++++++--
 3 files changed, 56 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ab2c7dcc..34c3c20bd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 3.28)
 project(iceoryx2)
 
-#TODO build iceoryx2
 #TODO how to handle feature flags
 
 add_subdirectory(iceoryx2-lang)
diff --git a/iceoryx2-lang/c/CMakeLists.txt b/iceoryx2-lang/c/CMakeLists.txt
index 953457eec..2697b8f39 100644
--- a/iceoryx2-lang/c/CMakeLists.txt
+++ b/iceoryx2-lang/c/CMakeLists.txt
@@ -1,18 +1,61 @@
 cmake_minimum_required(VERSION 3.28)
 project(iceoryx2_lang_c)
 
+########## Rust target ##########
+
+set(RUST_BUILD_TYPE "release")
+set(RUST_BUILD_TYPE_FLAG "--${RUST_BUILD_TYPE}")
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set(RUST_BUILD_TYPE "debug")
+    set(RUST_BUILD_TYPE_FLAG "")
+endif()
+
+set(RUST_ARCH_TRIPLET "")
+set(RUST_ARCH_TRIPLET_FLAG "")
+# if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "i486")
+#     set(RUST_ARCH_TRIPLET "i686-unknown-linux-gnu")
+#     set(RUST_ARCH_TRIPLET_FLAG "--target=${RUST_ARCH_TRIPLET}")
+# elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l")
+#     set(RUST_ARCH_TRIPLET "armv7-unknown-linux-gnueabihf")
+#     set(RUST_ARCH_TRIPLET_FLAG "--target=${RUST_ARCH_TRIPLET}")
+# elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "aarch64")
+#     set(RUST_ARCH_TRIPLET "${CMAKE_SYSTEM_PROCESSOR}-unknown-linux-gnu")
+#     set(RUST_ARCH_TRIPLET_FLAG "--target=${RUST_ARCH_TRIPLET}")
+# endif()
+
+set(RUST_TARGET_DIR ${CMAKE_BINARY_DIR}/rust)
+set(RUST_ARCH_TARGET_DIR ${RUST_TARGET_DIR}/${RUST_ARCH_TRIPLET})
+
+set(ICEORYX2_LANG_C_LIB ${RUST_ARCH_TARGET_DIR}/${RUST_BUILD_TYPE}/libiceoryx2_lang_c.a)
+
+# run cargo
+add_custom_target(
+    iceoryx2 ALL
+    COMMAND cargo build ${RUST_BUILD_TYPE_FLAG} --target-dir=${RUST_TARGET_DIR} ${RUST_ARCH_TRIPLET_FLAG}
+    BYPRODUCTS
+    "${CMAKE_CURRENT_SOURCE_DIR}/iceoryx2.h"
+    ${ICEORYX2_LANG_C_LIB}
+    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    VERBATIM
+    USES_TERMINAL
+)
+
 # TODO remove once generation works as expected ... have a look at iceoryx-rs
 configure_file("${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")
+# 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)
 
-find_library(ICEORYX2_LANG_C_LIB ${PROJECT_NAME} HINTS ${iceoryx2_SOURCE_DIR}/target/release)
+########## C target ##########
 
 add_library(${PROJECT_NAME} INTERFACE)
 
+add_dependencies(${PROJECT_NAME} iceoryx2)
+
 target_include_directories(${PROJECT_NAME} INTERFACE ${CMAKE_BINARY_DIR}/generated/include)
 
 target_link_libraries(${PROJECT_NAME} INTERFACE ${ICEORYX2_LANG_C_LIB})
diff --git a/iceoryx2-lang/c/README.md b/iceoryx2-lang/c/README.md
index 438dc7b9f..6b9d55fda 100644
--- a/iceoryx2-lang/c/README.md
+++ b/iceoryx2-lang/c/README.md
@@ -1,4 +1,10 @@
- * compile: `gcc example.c -Ltarget/debug -liceoryx2_lang_c`
- * set library path: `set -gx LD_LIBRARY_PATH $HOME/Development/iceoryx2/target/debug/`
+## Build instructions
 
- * see: https://github.com/corrosion-rs/corrosion
+```console
+cmake -B target/lang-c
+cmake --build target/lang-c
+```
+
+# Helpful iceoryx dev crates
+
+- https://github.com/corrosion-rs/corrosion