diff options
Diffstat (limited to 'third-party/cmake/DownloadAndExtractFile.cmake')
| -rw-r--r-- | third-party/cmake/DownloadAndExtractFile.cmake | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/third-party/cmake/DownloadAndExtractFile.cmake b/third-party/cmake/DownloadAndExtractFile.cmake index b0d28355cb..875d45795d 100644 --- a/third-party/cmake/DownloadAndExtractFile.cmake +++ b/third-party/cmake/DownloadAndExtractFile.cmake @@ -10,8 +10,8 @@ if(NOT DEFINED DOWNLOAD_DIR) message(FATAL_ERROR "DOWNLOAD_DIR must be defined.") endif() -if((NOT DEFINED EXPECTED_SHA1) OR (NOT DEFINED EXPECTED_MD5)) - message(FATAL_ERROR "EXPECTED_SHA1 or EXPECTED_MD5 must be defined.") +if(NOT DEFINED EXPECTED_SHA1) + message(FATAL_ERROR "EXPECTED_SHA1 must be defined.") endif() if(NOT DEFINED TARGET) @@ -58,16 +58,6 @@ message(STATUS "downloading... dst='${file}' timeout='${timeout_msg}'") -if((DEFINED EXPECTED_SHA1) AND (${CMAKE_VERSION} VERSION_GREATER 2.8.10)) - if(NOT (EXPECTED_SHA1 STREQUAL "0000000000000000000000000000000000000000")) - set(hash_args EXPECTED_HASH SHA1=${EXPECTED_SHA1}) - endif() -else() - if(NOT (EXPECTED_MD5 STREQUAL "00000000000000000000000000000000")) - set(hash_args EXPECTED_MD5 ${EXPECTED_MD5}) - endif() -endif() - file(DOWNLOAD ${URL} ${file} ${timeout_args} ${hash_args} @@ -85,6 +75,33 @@ if(NOT status_code EQUAL 0) ") endif() +set(NULL_SHA1 "0000000000000000000000000000000000000000") + +# Allow users to use "SKIP" or "skip" as the sha1 to skip checking the hash. +# You can still use the all zeros hash too. +if((EXPECTED_SHA1 STREQUAL "SKIP") OR (EXPECTED_SHA1 STREQUAL "skip")) + set(EXPECTED_SHA1 ${NULL_SHA1}) +endif() + +# We could avoid computing the SHA1 entirely if a NULL_SHA1 was given, +# but we want to warn users of an empty file. +file(SHA1 ${file} ACTUAL_SHA1) +if(ACTUAL_SHA1 STREQUAL "da39a3ee5e6b4b0d3255bfef95601890afd80709") + # File was empty. It's likely due to lack of SSL support. + message(FATAL_ERROR + "Failed to download ${URL}. The file is empty and likely means CMake " + "was built without SSL support. Please use a version of CMake with " + "proper SSL support. See " + "https://github.com/neovim/neovim/wiki/Building-Neovim#build-prerequisites " + "for more information.") +elseif((NOT EXPECTED_SHA1 STREQUAL NULL_SHA1) AND + (NOT EXPECTED_SHA1 STREQUAL ACTUAL_SHA1)) + # Wasn't a NULL SHA1 and we didn't match, so we fail. + message(FATAL_ERROR + "Failed to download ${URL}. Expected a SHA1 of " + "${EXPECTED_SHA1} but got ${ACTUAL_SHA1} instead.") +endif() + message(STATUS "downloading... done") # Slurped from a generated extract-TARGET.cmake file. @@ -140,4 +157,3 @@ message(STATUS "extracting... [clean up]") file(REMOVE_RECURSE "${ut_dir}") message(STATUS "extracting... done") - |