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cmake: automatically decide whether to use vendored rust crates

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Summary:
Update `RustStaticLibrary.cmake` to automatically decide to try and download
vendored Rust crates or not, based on the presence of the script it uses to
download them.

Reviewed By: fanzeyi

Differential Revision: D18588007

fbshipit-source-id: 995365f0cc2368897ddf94b5617bdb9bc0682edc
This commit is contained in:
Adam Simpkins 2019-11-20 12:26:31 -08:00 committed by Facebook Github Bot
parent a9d5178036
commit 8dc2c5963a
1 changed files with 17 additions and 3 deletions
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20
eden/scm/CMake/RustStaticLibrary.cmake
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@ -1,9 +1,21 @@
include(FBCMakeParseArgs)
set(
USE_CARGO_VENDOR AUTO CACHE STRING
"Download Rust Crates from an internally vendored location"
)
set_property(CACHE USE_CARGO_VENDOR PROPERTY STRINGS AUTO ON OFF)
set(RUST_VENDORED_CRATES_SCRIPT "${CMAKE_SOURCE_DIR}/tools/lfs/crates-io.py")
if("${USE_CARGO_VENDOR}" STREQUAL "AUTO")
if(EXISTS "${RUST_VENDORED_CRATES_SCRIPT}")
set(USE_CARGO_VENDOR ON)
else()
set(USE_CARGO_VENDOR OFF)
endif()
endif()
if(USE_CARGO_VENDOR AND NOT TARGET rust_vendored_crates)
set(RUST_VENDORED_CRATES_DIR "${CMAKE_BINARY_DIR}/_rust_crates/vendor")
set(RUST_VENDORED_CRATES_SCRIPT "${CMAKE_SOURCE_DIR}/tools/lfs/crates-io.py")
set(RUST_CARGO_HOME "${CMAKE_BINARY_DIR}/_rust_crates/cargo_home")
if(NOT EXISTS "${RUST_VENDORED_CRATES_SCRIPT}")
message(
FATAL "vendored rust crates script does not exist: "
@ -11,6 +23,8 @@ if(USE_CARGO_VENDOR AND NOT TARGET rust_vendored_crates)
)
endif()
set(RUST_VENDORED_CRATES_DIR "${CMAKE_BINARY_DIR}/_rust_crates/vendor")
set(RUST_CARGO_HOME "${CMAKE_BINARY_DIR}/_rust_crates/cargo_home")
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/_rust_crates")
file(MAKE_DIRECTORY "${RUST_CARGO_HOME}")
file(