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Allow LLVM downloads from custom server (#53)

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Fixes #49.
This commit is contained in:
Manu Sánchez 2018-03-28 21:18:48 +02:00 • committed by Jonathan Müller
commit 6be7e4793e
1 changed files with 31 additions and 8 deletions
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39
external/external.cmake vendored
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@ -53,15 +53,26 @@ endif()
# install libclang
#
# downloads and extracts LLVM using the given version and OS name
function(name_without_extension FILENAME NAME)
set(known_extensions "\\.tar\\.xz" "\\.tar\\.gz" "\\.tar" "\\.zip")
set(name_we "${FILENAME}")
foreach(ext ${known_extensions})
string(REGEX REPLACE "(.*)${ext}" "\\1" name_we "${name_we}")
endforeach()
set(${NAME} "${name_we}" PARENT_SCOPE)
endfunction()
# downloads and extracts LLVM using the given URL, filename, and extension
# sets: LLVM_DOWNLOAD_DIR
function(_cppast_download_llvm version os)
set(folder "clang+llvm-${version}-${os}") # name of downloaded folder
function(_cppast_download_llvm url)
get_filename_component(file "${url}" NAME)
name_without_extension(${file} folder)
if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/${folder})
set(url http://releases.llvm.org/${version}/${folder}.tar.xz) # download URL
message(STATUS "Downloading LLVM from ${url}")
file(DOWNLOAD ${url} ${CMAKE_CURRENT_BINARY_DIR}/${folder}.tar.xz SHOW_PROGRESS
file(DOWNLOAD ${url} ${CMAKE_CURRENT_BINARY_DIR}/${file} SHOW_PROGRESS
STATUS status
LOG log)
@ -71,13 +82,20 @@ function(_cppast_download_llvm version os)
message(FATAL_ERROR "error downloading llvm: ${status_string}" "${log}")
endif()
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xJf ${folder}.tar.xz
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xJf ${file}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
endif()
set(LLVM_DOWNLOAD_DIR ${CMAKE_CURRENT_BINARY_DIR}/${folder} PARENT_SCOPE)
endfunction()
# downloads and extracts LLVM using the given version and OS name
# sets: LLVM_DOWNLOAD_DIR
function(_cppast_download_llvm_from_llvm_releases version os)
_cppast_download_llvm("http://releases.llvm.org/${version}/clang+llvm-${version}-${os}.tar.xz")
set(LLVM_DOWNLOAD_DIR ${LLVM_DOWNLOAD_DIR} PARENT_SCOPE)
endfunction()
# finds the llvm-config binary
# sets: LLVM_CONFIG_BINARY
function(_cppast_find_llvm_config)
@ -175,7 +193,10 @@ function(_cppast_find_libclang config_tool min_version force)
endfunction()
set(llvm_min_version 3.9.1)
set(LLVM_PREFERRED_VERSION 4.0.0 CACHE STRING "the preferred LLVM version")
if(NOT DEFINED LLVM_PREFERRED_VERSION)
set(LLVM_PREFERRED_VERSION 4.0.0 CACHE STRING "the preferred LLVM version")
endif()
if(DEFINED LLVM_VERSION_EXPLICIT)
if(LLVM_VERSION_EXPLICIT VERSION_LESS llvm_min_version)
@ -185,7 +206,9 @@ if(DEFINED LLVM_VERSION_EXPLICIT)
message(STATUS "Using manually specified LLVM version ${LLVM_VERSION}")
elseif(NOT LLVM_CONFIG_BINARY)
if(DEFINED LLVM_DOWNLOAD_OS_NAME)
_cppast_download_llvm(${LLVM_PREFERRED_VERSION} ${LLVM_DOWNLOAD_OS_NAME})
_cppast_download_llvm_from_llvm_releases(${LLVM_PREFERRED_VERSION} ${LLVM_DOWNLOAD_OS_NAME})
elseif(DEFINED LLVM_DOWNLOAD_URL)
_cppast_download_llvm(${LLVM_DOWNLOAD_URL})
endif()
_cppast_find_llvm_config()
_cppast_find_libclang(${LLVM_CONFIG_BINARY} ${llvm_min_version} 1) # override here