freebsd-dev/lib/csu/i386
John Baldwin 5944f899a2 Rework r234502 to include a modified CFLAGS along with ACFLAGS.
On most architectures crt objects are compiled in a multiple-step process
so that sed can be run on the generated assembly.  As the final step,
the C compiler generates an object file from the modified assembly output.
Currently this last step uses $CC with only $ACFLAGS.  However, for other
uses in the tree, $ACFLAGS is meant to include assembly-specific compiler
flags that are in addition to $CFLAGS (see default .S.o rules
bsd.suffixes.mk).  In particular, external toolchains may require
additional flags to select a non-default target which will be present
in CFLAGS but not ACFLAGS.  To support this while still mitigating the
issue with CFLAGS described in r234502, include a modified CFLAGS that
excludes "-g" when assembling the modified assembly files.

Note that normally an assembler ($AS) is used to assemble .s flags to
object files (see bsd.suffixes.mk).  However, llvm-based toolchains do
not currently have a stand-alone assembler.

Reviewed by:	imp
Sponsored by:	DARPA / AFRL
Differential Revision:	https://reviews.freebsd.org/D10085
2017-04-07 19:53:14 +00:00
..
crt1_c.c Remove historical GNUC test 2015-12-08 19:32:58 +00:00
crt1_s.S
crti.S
crtn.S
Makefile Rework r234502 to include a modified CFLAGS along with ACFLAGS. 2017-04-07 19:53:14 +00:00
Makefile.depend META_MODE: Remove DEP_RELDIR from Makefile.depend files. 2015-09-25 19:26:08 +00:00