Merge pull request #610 from ajaust/maint/update-cmake-version

Bump minimum CMake version to 3.11

Author: ajaust

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.11)
 project(segyio LANGUAGES C CXX)
 
 include(CheckFunctionExists)

README.md

@@ -97,7 +97,7 @@ A copy of segyio is available both as pre-built binaries and source code:
 To build segyio you need:
  * A C99 compatible C compiler (tested mostly on gcc and clang)
  * A C++ compiler for the Python extension, and C++11 for the tests
- * [CMake](https://cmake.org/) version 2.8.12 or greater
+ * [CMake](https://cmake.org/) version 3.11 or greater
  * [Python](https://www.python.org/) 3.9 or greater
  * [numpy](http://www.numpy.org/) version 1.10 or greater
  * [setuptools](https://pypi.python.org/pypi/setuptools) version 28 or greater

external/catch2/CMakeLists.txt

@@ -1,12 +1,5 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.11)
 project(catch2 CXX)
 
-# Dummy source file added because INTERFACE type
-# library is not available in CMake 2.8.12
-# it's STATIC, because MSVC would otherwise not generate a .lib file, making
-# "linking" (for header path) fail later
-#
-# TODO: when cmake minimum version is bumped to 3.x series, replace with
-# an INTERFACE library
-add_library(catch2 STATIC dummy.cpp)
-target_include_directories(catch2 SYSTEM PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+add_library(catch2 INTERFACE)
+target_include_directories(catch2 SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})

external/catch2/dummy.cpp

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.11)
 project(libsegyio C CXX)
 
 set(SEGYIO_LIB_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR} CACHE PATH "")

lib/CMakeLists.txt

@@ -7,7 +7,7 @@ if (SKBUILD)
     return ()
 endif ()
 
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.11)
 project(segyio-python)
 
 if (REQUIRE_PYTHON)

python/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5.0)
+cmake_minimum_required(VERSION 3.11)
 project(segyio-python-extension LANGUAGES C CXX)
 
 set(CMAKE_CXX_STANDARD 11)