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[vcpkg_configure_cmake] Pass CMAKE_DISABLE_SOURCE_CHANGES to all ports by default #12846

2 changes: 2 additions & 0 deletions docs/maintainers/vcpkg_configure_cmake.md
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@ This should be specified unless the port is known to not work under Ninja.
Disables running the CMake configure step in parallel.
This is needed for libraries which write back into their source directory during configure.

This also disables CMAKE_DISABLE_SOURCE_CHANGES.

### NO_CHARSET_FLAG
Disables passing `utf-8` as the default character set to `CMAKE_C_FLAGS` and `CMAKE_CXX_FLAGS`.

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3 changes: 3 additions & 0 deletions scripts/cmake/vcpkg_configure_cmake.cmake
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@
## Disables running the CMake configure step in parallel.
## This is needed for libraries which write back into their source directory during configure.
##
## This also disables CMAKE_DISABLE_SOURCE_CHANGES.
##
## ### NO_CHARSET_FLAG
## Disables passing `utf-8` as the default character set to `CMAKE_C_FLAGS` and `CMAKE_CXX_FLAGS`.
##
Expand Down Expand Up @@ -266,6 +268,7 @@ function(vcpkg_configure_cmake)
-DCMAKE_INSTALL_PREFIX=${CURRENT_PACKAGES_DIR}/debug)

if(NINJA_HOST AND CMAKE_HOST_WIN32 AND NOT _csc_DISABLE_PARALLEL_CONFIGURE)
list(APPEND _csc_OPTIONS "-DCMAKE_DISABLE_SOURCE_CHANGES=ON")

vcpkg_find_acquire_program(NINJA)
get_filename_component(NINJA_PATH ${NINJA} DIRECTORY)
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