Added external URLs for downloading binutils. (#260)

* Renamed TIMEMORY_BINUTILS_DOWNLOAD_URL to BINUTILS_DOWNLOAD_URL.

This change is part of the fix for SWDEV-471917.

* Cleaned up code that deals with mirrors for binutils.

* Renamed BINUTILS_DOWNLOAD_URL back to TIMEMORY_BINUTILS_DOWNLOAD_URL.

cmake/Modules/ConfigBinutils.cmake

@@ -70,21 +70,14 @@ mark_as_advanced(binutils_CONFIG_FLAGS)
 # needed for configure command
 string(REPLACE " " ";" _binutils_CONFIG_FLAGS "${binutils_CONFIG_FLAGS}")
 
-# List of URLS (includes mirrors) to download binutils from.
-set(TIMEMORY_BINUTILS_DOWNLOAD_URL
- ""
- CACHE STRING "URLs for binutils download")
-
-# Add defualt URLs to download binutils from.
-list(APPEND TIMEMORY_BINUTILS_DOWNLOAD_URL
- "http://ftpmirror.gnu.org/gnu/binutils/binutils-2.40.tar.gz"
- "http://mirrors.kernel.org/sourceware/binutils/releases/binutils-2.40.tar.gz")
-
 include(ExternalProject)
 externalproject_add(
  binutils-external
  PREFIX ${PROJECT_BINARY_DIR}/external/binutils
- URL ${TIMEMORY_BINUTILS_DOWNLOAD_URL}
+ URL
+ ${TIMEMORY_BINUTILS_DOWNLOAD_URL}
+ http://ftpmirror.gnu.org/gnu/binutils/binutils-2.40.tar.gz
+ http://mirrors.kernel.org/sourceware/binutils/releases/binutils-2.40.tar.gz
  BUILD_IN_SOURCE 1
  CONFIGURE_COMMAND
  ${CMAKE_COMMAND} -E env CC=${CMAKE_C_COMPILER} CFLAGS=-fPIC\ -O3