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[cmake] ModuleHelper function to generate dev_env variable for externalproject_add 

Currently specifically for windows to set a dev environment for target configure and
build steps for externalproject_add calls
This commit is contained in:
fuzzard 2025-11-18 18:07:11 +10:00
parent b6d2a6af6a
commit 12c372da21
1 changed files with 42 additions and 0 deletions
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42
cmake/scripts/common/ModuleHelpers.cmake
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@ -919,3 +919,45 @@ function(create_mesonbuiltin)
string(PREPEND output_string "[built-in options]\n")
set(meson_builtin_string ${output_string} PARENT_SCOPE)
endfunction()
# Creates a variable and sets in parent scope - ${${CMAKE_FIND_PACKAGE_NAME}_MODULE}_dev_env
# Variable is purposely set with an ending COMMAND to allow the variable to be placed
# in an externalproject_add build or configure step.
#
# eg. set(BUILD_COMMAND ${${${CMAKE_FIND_PACKAGE_NAME}_MODULE}_dev_env}
# Ninja::Ninja -C ./build)
#
function(create_module_dev_env)
if(WIN32 OR WINDOWS_STORE)
set(Vcvars_FIND_VCVARSALL TRUE)
if(NOT VERBOSE_FIND)
set(Vcvars_FIND_QUIETLY TRUE)
endif()
find_package(Vcvars REQUIRED)
if(WINDOWS_STORE)
set(vcstore store)
endif()
string(TOLOWER "${CMAKE_VS_PLATFORM_TOOLSET_HOST_ARCHITECTURE}" _lower_hostarch)
string(TOLOWER "${CMAKE_GENERATOR_PLATFORM}" _lower_targetarch)
if("${_lower_hostarch}" STREQUAL "x64")
set(_lower_hostarch amd64)
endif()
if("${_lower_targetarch}" STREQUAL "x64")
set(_lower_targetarch amd64)
endif()
if("${_lower_hostarch}" STREQUAL "${_lower_targetarch}")
set(vcarch ${_lower_hostarch})
else()
set(vcarch ${_lower_hostarch}_${_lower_targetarch})
endif()
set(cmd_wrapper "${Vcvars_BATCH_FILE}" ${vcarch} ${vcstore} ${CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION})
# trailing COMMAND sets externalproject_add commands up, and is required
set(${${CMAKE_FIND_PACKAGE_NAME}_MODULE}_dev_env ${cmd_wrapper} COMMAND PARENT_SCOPE)
endif()
endfunction()