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https://github.com/opencv/opencv/pull/27192
From cb8030809e0278d02fa335cc1f5ec7c3c17548e0 Mon Sep 17 00:00:00 2001
From: Dan Dennedy <dan@dennedy.org>
Date: Wed, 2 Apr 2025 13:45:08 -0700
Subject: [PATCH] Fix configuring with CMake version 4
fixes #27122
---
CMakeLists.txt | 2 +-
cmake/OpenCVGenPkgconfig.cmake | 2 +-
.../introduction/linux_gcc_cmake/linux_gcc_cmake.markdown | 2 +-
modules/python/CMakeLists.txt | 2 +-
platforms/android/build-tests/test_cmake_build.py | 2 +-
samples/CMakeLists.example.in | 2 +-
samples/CMakeLists.txt | 2 +-
samples/cpp/example_cmake/CMakeLists.txt | 2 +-
samples/cpp/tutorial_code/gpu/gpu-thrust-interop/CMakeLists.txt | 2 +-
samples/hal/c_hal/CMakeLists.txt | 2 +-
samples/hal/slow_hal/CMakeLists.txt | 2 +-
samples/openvx/CMakeLists.txt | 2 +-
12 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7985623ffb53..ca402b65c9b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ endif()
include(cmake/OpenCVMinDepVersions.cmake)
if(CMAKE_SYSTEM_NAME MATCHES WindowsPhone OR CMAKE_SYSTEM_NAME MATCHES WindowsStore)
- cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
+ cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
#Required to resolve linker error issues due to incompatibility with CMake v3.0+ policies.
#CMake fails to find _fseeko() which leads to subsequent linker error.
#See details here: http://www.cmake.org/Wiki/CMake/Policies
diff --git a/cmake/OpenCVGenPkgconfig.cmake b/cmake/OpenCVGenPkgconfig.cmake
index 4fc80f5e4b27..3532260efb53 100644
--- a/cmake/OpenCVGenPkgconfig.cmake
+++ b/cmake/OpenCVGenPkgconfig.cmake
@@ -110,7 +110,7 @@ endif()
# =============================================================================
else() # DEFINED CMAKE_HELPER_SCRIPT
-cmake_minimum_required(VERSION 2.8.12.2)
+cmake_minimum_required(VERSION 3.5)
cmake_policy(SET CMP0012 NEW)
include("${CMAKE_HELPER_SCRIPT}")
include("${OpenCV_SOURCE_DIR}/cmake/OpenCVUtils.cmake")
diff --git a/doc/tutorials/introduction/linux_gcc_cmake/linux_gcc_cmake.markdown b/doc/tutorials/introduction/linux_gcc_cmake/linux_gcc_cmake.markdown
index 7cfbb31777d3..75bdc2ef42d0 100644
--- a/doc/tutorials/introduction/linux_gcc_cmake/linux_gcc_cmake.markdown
+++ b/doc/tutorials/introduction/linux_gcc_cmake/linux_gcc_cmake.markdown
@@ -63,7 +63,7 @@ int main(int argc, char** argv )
Now you have to create your CMakeLists.txt file. It should look like this:
@code{.cmake}
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.5)
project( DisplayImage )
find_package( OpenCV REQUIRED )
include_directories( ${OpenCV_INCLUDE_DIRS} )
diff --git a/modules/python/CMakeLists.txt b/modules/python/CMakeLists.txt
index 93eab8c94d21..ec30f4215012 100644
--- a/modules/python/CMakeLists.txt
+++ b/modules/python/CMakeLists.txt
@@ -35,7 +35,7 @@ add_subdirectory(python3)
else() # standalone build
-cmake_minimum_required(VERSION 2.8.12.2)
+cmake_minimum_required(VERSION 3.5)
project(OpenCVPython CXX C)
include("./standalone.cmake")
diff --git a/platforms/android/build-tests/test_cmake_build.py b/platforms/android/build-tests/test_cmake_build.py
index 25d185b8e5c6..51affd1f3b4b 100644
--- a/platforms/android/build-tests/test_cmake_build.py
+++ b/platforms/android/build-tests/test_cmake_build.py
@@ -7,7 +7,7 @@
log.basicConfig(format='%(message)s', level=log.DEBUG)
CMAKE_TEMPLATE='''\
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
# Enable C++11
set(CMAKE_CXX_STANDARD 11)
diff --git a/samples/CMakeLists.example.in b/samples/CMakeLists.example.in
index 7cf20d5e44b3..59a133bc9d74 100644
--- a/samples/CMakeLists.example.in
+++ b/samples/CMakeLists.example.in
@@ -1,5 +1,5 @@
# cmake needs this line
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
if(NOT DEFINED EXAMPLE_NAME)
message(FATAL_ERROR "Invalid build script: missing EXAMPLE_NAME")
diff --git a/samples/CMakeLists.txt b/samples/CMakeLists.txt
index 6a18b61afa33..dabe07747f81 100644
--- a/samples/CMakeLists.txt
+++ b/samples/CMakeLists.txt
@@ -62,7 +62,7 @@ else()
# Standalone mode
#
#===================================================================================================
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
project(samples C CXX)
option(BUILD_EXAMPLES "Build samples" ON)
diff --git a/samples/cpp/example_cmake/CMakeLists.txt b/samples/cpp/example_cmake/CMakeLists.txt
index 8d5cd98af291..f17aca4b5432 100644
--- a/samples/cpp/example_cmake/CMakeLists.txt
+++ b/samples/cpp/example_cmake/CMakeLists.txt
@@ -1,5 +1,5 @@
# cmake needs this line
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
# Define project name
project(opencv_example_project)
diff --git a/samples/cpp/tutorial_code/gpu/gpu-thrust-interop/CMakeLists.txt b/samples/cpp/tutorial_code/gpu/gpu-thrust-interop/CMakeLists.txt
index 037d508569b3..1a35085aa2a6 100644
--- a/samples/cpp/tutorial_code/gpu/gpu-thrust-interop/CMakeLists.txt
+++ b/samples/cpp/tutorial_code/gpu/gpu-thrust-interop/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
FIND_PACKAGE(CUDA REQUIRED)
INCLUDE_DIRECTORIES(${CUDA_INCLUDE_DIRS})
diff --git a/samples/hal/c_hal/CMakeLists.txt b/samples/hal/c_hal/CMakeLists.txt
index 8cf78aa5ff63..72dfef01c3ad 100644
--- a/samples/hal/c_hal/CMakeLists.txt
+++ b/samples/hal/c_hal/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12.2 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
set(PROJECT_NAME "c_hal")
set(HAL_LIB_NAME "c_hal")
diff --git a/samples/hal/slow_hal/CMakeLists.txt b/samples/hal/slow_hal/CMakeLists.txt
index 1ffa4670b6ab..a20596ea2a13 100644
--- a/samples/hal/slow_hal/CMakeLists.txt
+++ b/samples/hal/slow_hal/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12.2 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
set(PROJECT_NAME "slow_hal")
set(HAL_LIB_NAME "slow_hal")
diff --git a/samples/openvx/CMakeLists.txt b/samples/openvx/CMakeLists.txt
index fd04e6b9e261..c5efdf9ad02a 100644
--- a/samples/openvx/CMakeLists.txt
+++ b/samples/openvx/CMakeLists.txt
@@ -1,6 +1,6 @@
ocv_install_example_src(cpp *.cpp *.hpp CMakeLists.txt)
-cmake_minimum_required(VERSION 2.8.12.2)
+cmake_minimum_required(VERSION 3.5)
set(OPENCV_OPENVX_SAMPLE_REQUIRED_DEPS
opencv_core
|
