WITH_SYSTEM_COMPILER: Skip Clang/GCC bootstrap [Critical note for Toolchain changes]
bdrewery at FreeBSD.org
Mon May 23 16:40:23 UTC 2016
In head is now the WITH_SYSTEM_COMPILER option. It is off-by-default
for now but hopefully will be on-by-default relatively quickly. It will
skip building the bootstrap Clang for
buildworld/kernel-toolchain/universe if /usr/bin/cc matches the tree.
It will also skip GCC if building for the same arch as the host system.
The Clang/GCC-to-by-installed will be still be built though.
See https://svnweb.freebsd.org/changeset/base/300354 for more details.
A critical note to toolchain developers, or anyone who touches the Clang
or GCC source files. If you modify these files or add a new target
architecture into Clang, please bump the revision in the appropriate file:
Clang: lib/clang/include/clang/Basic/Version.inc FREEBSD_CC_VERSION
GCC: gnu/usr.bin/cc/cc_tools/freebsd-native.h FBSD_CC_VER
Still left todo:
- Build one version of clang in universe if the WITH_SYSTEM_COMPILER
logic does not pass.
More information about the freebsd-current