build: support BUILD_SHARED_LIBS and set default CMAKE_BUILD_TYPE

Author: Acly

CMakeLists.txt

@@ -2,6 +2,7 @@ cmake_minimum_required(VERSION 3.28)
 
 project(vision.cpp VERSION 0.2.0 LANGUAGES CXX)
 
+option(BUILD_SHARED_LIBS "Build shared libraries instead of static libraries" ON)
 option(VISP_VULKAN "Enable Vulkan support" OFF)
 option(VISP_DEV "Enable development mode" OFF)
 option(VISP_CI "Enable for continuous integration environment" OFF)
@@ -16,6 +17,12 @@ if(PROJECT_IS_TOP_LEVEL)
   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 endif()
 
+# Set default build type to Release (except for multi-config generators)
+if (NOT XCODE AND NOT MSVC AND NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
+    set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
+endif()
+
 # Configure assertions
 
 if(VISP_DEV)

README.md

@@ -151,7 +151,7 @@ cd vision.cpp
 
 **Configure and build**
 ```sh
-cmake . -B build -D CMAKE_BUILD_TYPE=Release
+cmake . -B build
 cmake --build build --config Release
 ```
 
@@ -160,7 +160,7 @@ cmake --build build --config Release
 Building with Vulkan GPU support requires the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/) to be installed.
 
 ```sh
-cmake . -B build -D CMAKE_BUILD_TYPE=Release -D VISP_VULKAN=ON
+cmake . -B build -D VISP_VULKAN=ON
 ```
 
 ### Tests _(Optional)_

src/visp/CMakeLists.txt

@@ -1,4 +1,4 @@
-add_library(visioncpp SHARED)
+add_library(visioncpp)
 
 target_sources(visioncpp PRIVATE
   arch/birefnet.cpp

tests/CMakeLists.txt

@@ -38,7 +38,7 @@ include(reference-images.cmake)
 #
 # Workbench library for Python tests
 
-add_library(vision-workbench workbench.cpp)
+add_library(vision-workbench SHARED workbench.cpp)
 target_include_directories(vision-workbench PRIVATE ../src)
 target_compile_definitions(vision-workbench PRIVATE ${VISP_ASSERT} ${VISP_DEFINITIONS})
 target_compile_options(vision-workbench PRIVATE ${VISP_COMP_OPTIONS})