From d2cbe446461db193fe34eed994d927c26a56296f Mon Sep 17 00:00:00 2001
From: Ryan Friedman <25047695+Ryanf55@users.noreply.github.com>
Date: Wed, 17 Jun 2026 16:21:17 -0600
Subject: [PATCH] Support local install with example

Signed-off-by: Ryan Friedman <25047695+Ryanf55@users.noreply.github.com>
---
 CMakeLists.txt              | 11 ++++++++++-
 README.md                   | 11 +++++++++++
 examples/cpp/CMakeLists.txt |  4 +++-
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 06d4d27..e21d94e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,8 +56,15 @@ install(TARGETS PiPCA9685_cpp
     INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 
+# Strip the install prefix if Python_SITEARCH is underneath it
+cmake_path(
+    RELATIVE_PATH Python_SITEARCH
+    BASE_DIRECTORY "${CMAKE_INSTALL_PREFIX}"
+    OUTPUT_VARIABLE PYTHON_INSTALL_DIR
+)
+
 install(TARGETS PiPCA9685_python
-    DESTINATION ${Python_SITEARCH}
+    LIBRARY DESTINATION "${PYTHON_INSTALL_DIR}"
 )
 
 install(EXPORT PiPCA9685_export
@@ -74,3 +81,5 @@ if(NOT TARGET uninstall)
   add_custom_target(uninstall
     COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
 endif()
+
+add_subdirectory(examples/cpp)
diff --git a/README.md b/README.md
index cd1412f..f20cbf6 100644
--- a/README.md
+++ b/README.md
@@ -65,3 +65,14 @@ To run the Python example, run the following command in the `examples/python/` d
 ```bash
 python3 example.py
 ```
+
+## Development
+
+If you want to work on a local copy without root access:
+```bash
+cmake -B build
+cmake --build build
+cmake --install build --prefix install
+```
+
+With this workflow, the example will be built in `./build/examples/cpp/example-cpp`.
diff --git a/examples/cpp/CMakeLists.txt b/examples/cpp/CMakeLists.txt
index e6eea03..430ad72 100644
--- a/examples/cpp/CMakeLists.txt
+++ b/examples/cpp/CMakeLists.txt
@@ -3,7 +3,9 @@ project(example)
 
 set(CMAKE_CXX_STANDARD 23)
 
-find_package(PiPCA9685 REQUIRED)
+if(NOT TARGET PiPCA9685::PiPCA9685)
+    find_package(PiPCA9685 REQUIRED)
+endif()
 
 add_executable(example-cpp main.cpp)
 target_link_libraries(example-cpp PiPCA9685::PiPCA9685)