NetBSD/external/gpl3/gcc/README.gcc48

$Id: README.gcc48,v 1.2 2014/03/09 21:01:14 mrg Exp $

usr.bin:
	note:
		-static-libstdc++ -static-libgcc
		-rdynamic  -lz

lib:

	G_NOEXCEPTION_FLAGS -- need to use this

new stuff:
	cc1objcplus
	collect2 -- need to re-introduce?

	gcc-ar, -nm and -ranlib, for lto plugin stuff

	- what is libitm?

	- asan/libsanitizer

x86_64 port:
- copied manually i386-builtin-types.inc instead of generating it.


arch/feature list:

architecture	tools	kernels	libgcc	native-gcc	make release	runs	atf
------------	-----	-------	------	----------	------------	----	---
alpha		yes	no[2]	yes	yes		yes
arm		yes	yes	yes	yes		yes		yes	no[7]
armeb		yes	?	yes	builds
coldfire	yes	?	yes	yes		no[8]		?	?
earm		yes	?	yes	builds
earmeb		yes	?	yes	builds
earmhf		yes	?	yes	builds
earmhfeb	yes	?	yes	builds
earmv4		yes	?	yes	yes[13]		yes[shark]	yes	no
earmv4eb	yes	?	yes	builds
earmv6		yes	yes	yes	builds
earmv6eb	yes	?	yes	builds
earmv6hf	yes	yes	yes	builds
earmv6hfeb	yes	?	yes	builds
earmv7		yes	?	yes	builds
earmv7eb	yes	?	yes	builds
earmv7hf	yes	?	yes	builds
earmv7hfeb	yes	?	yes	builds
hppa		yes	yes	yes	yes		yes		yes	yes
i386		yes	yes	yes	yes		yes
ia64
m68000		yes	?	yes	no[3]		
m68k		yes	yes	yes	yes		no[8]
mips64eb	yes	yes[5]	yes	yes		
mips64el	yes	yes	yes	yes		yes[9]		no[10]
mipseb		yes	yes[5]	yes	yes		yes
mipsel		yes	yes	yes	yes		yes		yes[10]	no[11]
powerpc		yes	yes[1]	yes	yes		yes		yes	yes
powerpc64	yes[12]
sh3eb		yes	?	yes	yes		no[8]
sh3el		yes	?	yes	yes		no[8]
sparc		yes	yes	yes	yes		yes		yes	yes
sparc64		yes	yes	yes	yes		yes		yes	yes
vax		yes	yes	yes	yes		no[8]
x86_64		yes	yes	yes	yes		yes		?

[1] ofppc/pegasos has issues with symtab loading.
    sandpoint works fine in multi-user, found an annoyance by com(4) change.
[2] a kernel has it's text overwritten by something before alpha_init
[3] relocations fail in libgcc
[5] mips*eb kernels seem to work as well as gcc 4.5 ones.
[7] shark atf-report fails with: Unexpected token `tc-start'; expected end of test program
[8] m68k/vax/sh3 gcc seem to randomly get -fstack-protector/-Wstack-protector
    wrong, for example m68k flags alarm() as unprotected in
    libc/gen/alarm.c:53, vax ifinit() in sbin/routed/if.c:680.
   --> hacked around
[9] LOONGSON kernel has general problems
[10] mips64el fails -- something in /sbin/init or /rescue/init jumps to zero.
    in -current.  a hack for o32 works.
[11] weird failures.
[12] cc1 gets segv compiling libgcc.
[13] some answers about C99 support in libstdc++-v3 are wrong.