Now that we assume pthreads, the only assembly
left is in libmp and libsec.
We only ever added assembly for 386.
The portable C code is fine for plan9port.
Also, if CC9FLAGS includes -fsanitize=address (ASAN),
predefine PLAN9PORT_ASAN for use by programs that need
to know (mainly libthread).
The 9c script used to have a variable called ngflags, which
was ccflags except -g (ng stood for "no g"), but nothing needs
it split out anymore, so simplify to just ccflags.
Version 10 of gcc enforces -fno-common which breaks a lot of things.
This fix reverts to the pre-10 behaviour. The real fix is to clean up
stray redefinitions which should be declarations.
POSIX does not support grouping in case item patterns.
Installing with a strict POSIX shell fails with:
/usr/local/plan9/bin/9c: line 82: syntax error near unexpected token `('
/usr/local/plan9/bin/9c: line 82: `*(DragonFly|BSD)*gcc*) usegcc ;;'
This change expands the patterns to work around the limitation.
See https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_10
(and search for case_clause)
fixed warnings:
src/cmd/fossil/disk.c:37:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:38:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:39:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:40:13: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/cmd/fossil/disk.c:41:14: warning: use of GNU 'missing =' extension in designator [-Wgnu-designator]
src/libndb/ndbreorder.c:41:55: warning: for loop has empty body [-Wempty-body]
ignored warnings:
src/cmd/acid/dbg.y:393:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/bc.y:1327:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/bc.y:1327:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/grep/grep.y:420:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/grep/grep.y:420:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/hoc/hoc.y:692:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/hoc/hoc.y:692:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/lex/parser.y:886:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/rc/syn.y:303:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/cmd/units.y:1003:9: warning: array index -1 is before the beginning of the array [-Warray-bounds]
src/libregexp/regcomp.c:19:16: warning: variable 'reprog' is not needed and will not be emitted [-Wunneeded-internal-declaration]
LGTM=rsc
R=rsc
https://codereview.appspot.com/158250043
