CMakeLists.txt:
cmake_minimum_required(VERSION 3.7 FATAL_ERROR)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
include(foo)
#macro(test_project2 name target)
# project(${name} ${ARGN})
#endmacro(test_project2)
test_project(runtime TRUE VERSION 1.0)
foo.cmake:
macro(test_project name target)
project(${name} ${ARGN})
endmacro(test_project)
The test:
Save the two files then run "cmake ." on this CMakeLists.txt twice in
succession.
Using cmake 3.11 or earlier: no problems
Using cmake 3.12: the second "cmake ." issues the following warning:
CMake Warning (dev) in CMakeLists.txt:
Policy CMP0048 is not set: project() command manages VERSION variables.
Run "cmake --help-policy CMP0048" for policy details. Use the cmake_policy
command to set the policy and suppress this warning.
The following variable(s) would be set to empty:
CMAKE_PROJECT_VERSION
CMAKE_PROJECT_VERSION_MAJOR
CMAKE_PROJECT_VERSION_MINOR
That by itself is weird, but it gets better. See the "test_project2" macro in
CMakeLists.txt? Simply uncomment it.
Even though it isn't called, uncommenting that macro causes the "Policy
CMP0048" warning to disappear.
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