From: Tim Hunter <cyclists@...>
Date: 2004-08-25T07:20:45+09:00
Subject: Error in defines.h when compiling with on UltraSPARC II

An RMagick user has reported a problem compling RMagick on an UltraSPARC II
running Debian Linux. The error is in the defines.h header. Gcc says:

gcc -fPIC -std=c99 -Wall -g -O2 -Wall -pthread  -I.
-I/usr/lib/ruby/1.8/sparc-linux -I/usr/lib/ruby/1.8/sparc-linux
-I/build/buildd/librmagick-ruby-1.5.0/ext/RMagick  -DRUBY_VERSION=0x182
-I/usr/include -c rmdraw.c
In file included from /usr/lib/ruby/1.8/sparc-linux/ruby.h:22,
                 from rmagick.h:19,                  from rmdraw.c:10:
/usr/lib/ruby/1.8/sparc-linux/defines.h: In function
`flush_register_windows':
/usr/lib/ruby/1.8/sparc-linux/defines.h:216: error: `asm' undeclared (first
use in this function)
/usr/lib/ruby/1.8/sparc-linux/defines.h:216: error: (Each undeclared
identifier is reported only once
/usr/lib/ruby/1.8/sparc-linux/defines.h:216: error: for each function it
appears in.)
/usr/lib/ruby/1.8/sparc-linux/defines.h:216: error: parse error before
"volatile"

This is Ruby 1.8.2. No error occurs if the -std=c99 option is omitted.

Any ideas? RMagick uses the fmax function, defined in C99. I could replace
it with something else but I'd rather not.