From bef16ef3b8919577bd83b6e05d3d4a44a1e1a876 Mon Sep 17 00:00:00 2001
From: Denis Biryukov <denis.biryukov@zettascale.tech>
Date: Tue, 29 Oct 2024 13:17:40 +0100
Subject: [PATCH] use only find_package when building examples as a root
 project

---
 .github/workflows/ci.yml | 10 +---------
 README.md                | 22 ++--------------------
 examples/CMakeLists.txt  |  3 +--
 3 files changed, 4 insertions(+), 31 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 336498474..98ade7358 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,19 +88,11 @@ jobs:
           cd build
           cmake --build . --target examples
 
-      - name: Build examples with zenoh-c as subbroject and static library and in debug mode and in separate directory
-        shell: bash
-        run: |
-          mkdir -p ../build_examples
-          cmake -S examples -B ../build_examples -DZENOHC_TREAT_WARNING_AS_ERROR=ON -DCMAKE_BUILD_TYPE=Debug -DBUILD_SHARED_LIBS=OFF
-          cmake --build ../build_examples --config Debug
-          rm -rf ../build_examples
-
       - name: Build examples with zenoh-c as installed package
         shell: bash
         run: |
           mkdir -p build_examples && cd build_examples
-          cmake ../examples -DZENOHC_TREAT_WARNING_AS_ERROR=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/local -DZENOHC_SOURCE=PACKAGE
+          cmake ../examples -DZENOHC_TREAT_WARNING_AS_ERROR=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/local
           cmake --build . --config Release
           cd .. && rm -rf build_examples
 
diff --git a/README.md b/README.md
index 8994b999b..98ae67f99 100644
--- a/README.md
+++ b/README.md
@@ -130,36 +130,18 @@ cmake ../zenoh-c/examples
 cmake --build .
 ```
 
-In this case, the examples executables will be built in the current directory.
-
-As a root project the `examples` project links `zenoh-c` with CMake's [add_subdirectory] command by default. There are also other ways to link `zenoh-c` - with [find_package] or [FetchContent]:
-
-[add_subdirectory]: https://cmake.org/cmake/help/latest/command/add_subdirectory.html
-[find_package]: https://cmake.org/cmake/help/latest/command/find_package.html
-[FetchContent]: https://cmake.org/cmake/help/latest/module/FetchContent.html
-
 Link with `zenoh-c` installed into default location in the system (with [find_package]):
 
 ```bash
-cmake ../zenoh-c/examples -DZENOHC_SOURCE=PACKAGE
+cmake ../zenoh-c/examples
 ```
 
 Link with `zenoh-c` installed in `~/.local` directory:
 
 ```bash
-cmake ../zenoh-c/examples -DZENOHC_SOURCE=PACKAGE -DCMAKE_INSTALL_PREFIX=~/.local
-```
-
-Download specific `zenoh-c` version from git with [FetchContent]:
-
-```bash
-cmake ../zenoh-c/examples -DZENOHC_SOURCE=GIT_URL -DZENOHC_GIT_TAG=0.11.0-rc
+cmake ../zenoh-c/examples -DCMAKE_INSTALL_PREFIX=~/.local
 ```
 
-See also `configure_include_project` function in [helpers.cmake] for more information
-
-[helpers.cmake]: cmake/helpers.cmake
-
 ## Running the Examples
 
 ### Basic Pub/Sub Example
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 3674203fc..db8f3a714 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -4,8 +4,7 @@ if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
     project(zenohc_examples LANGUAGES C)
     set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../cmake" ${CMAKE_MODULE_PATH})
     include(helpers)
-    set_default_build_type(Release)
-    configure_include_project(ZENOHC zenohc zenohc::lib ".." zenohc "https://github.com/eclipse-zenoh/zenoh-c" "")
+    find_package(zenohc REQUIRED)
     add_custom_target(examples ALL)
 else()
     message(STATUS "zenoh-c examples")