On Tue, Aug 27, 2013 at 09:43:31AM +0200, Natanael Copa wrote:
> Hi,
>
> git-1.8.4 fails to build with this error:
>
> cc -o config.o -c -MF ./.depend/config.o.d -MQ config.o -MMD -MP -Os
> -fomit-frame-pointer -pipe -g -O2 -Wall -I. -DUSE_LIBPCRE -DNO_NSEC
> -DNO_GETTEXT -DNO_ICONV -DHAVE_PATHS_H -DHAVE_DEV_TTY
> -DSHA1_HEADER='<openssl/sha.h>' -DNO_STRLCPY -DUSE_WILDMATCH -DNO_MKSTEMPS
> -DSHELL_PATH='"/bin/sh"' -DETC_GITCONFIG='"/etc/gitconfig"' config.c
> In file included from /usr/include/stdio.h:72:0,
> from git-compat-util.h:99,
> from cache.h:4,
> from config.c:8:
> config.c: In function 'get_next_char':
> config.c:220:14: error: expected identifier before '(' token
> int c = cf->fgetc(cf);
> ^
> config.c:220:14: error: expected statement before ')' token
> int c = cf->fgetc(cf);
> ^
> config.c:220:14: error: expected statement before ')' token
> int c = cf->fgetc(cf);
> ^
> config.c:224:11: error: expected identifier before '(' token
> c = cf->fgetc(cf);
> ^
> make: *** [config.o] Error 1
>
> The problem appear to be that fgetc is a macro in uClibc.
>
> Any idea what the proper fix for this would be? Is it really a good idea to
> use macro instead of function for fgetc/fputc?
This is a bug in git. Per ISO C, any function defined in the standard
library can also be defined as a function-like macro, provided the
underlying function exists (the application is allowed to #undef the
macro) and the macro version properly protects its arguments and
evaluates each one exactly once.
A correct application would either #undef fgetc or avoid using the
same name as a standard function.
Rich
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