（1）gcc
Solaris的/usr/sfw/bin/gcc可以用来编译64位C程序，但是需要加-m64编译选项。此外也可以从gcc的官网下载gcc源代码，自行编译安装，但是要注意编译出来的gcc需要是64位的。
（2）gdb
调试64位C程序需要64位的gdb，gdb的安装步骤如下（以7.6版本为例）：
1）gunzip gdb-7.6.tar.gz
2）tar xvf gdb-7.6.tar
3）cd gdb-7.6
4）export CC="/usr/sfw/bin/gcc -m64"
5）./configure -prefix=“/…/…(a folder path)”
6）make
7）make install
需要注意的是，目前gdb的最新版本是7.7，在Solaris下编译会有错误。
（3）参考资料
个人认为Oracle的这本《Solaris 64-bit Developer’s Guide》，是在Solaris下开发64位C程序最好的资料。每一位C语言开发者都应该看一下，相信都能受益匪浅。[code]bfd/cache.c doesn't compile with gcc -m64 on Solaris
On current mainline, bfd/cache.c doesn't compile with gcc -m64 on
Solaris 8 to 11:
cc1: warnings being treated as errors
/vol/src/gnu/gdb/gdb-7.7/bfd/cache.c: In function 'bfd_cache_max_open':
/vol/src/gnu/gdb/gdb-7.7/bfd/cache.c:85: error: comparison between signed and unsigned integer expressions
This breaks both binutils 2.24 and gdb 7.7 builds and is a regression
from the previous releases.
The error is about
&& rlim.rlim_cur != RLIM_INFINITY)
where
typedef unsigned long rlim_t;
#define RLIM_INFINITY (-3l)
While I've raised the issue with Oracle, this won't help for shipping
Solaris releases. The problem can easily be avoided by casting
RLIM_INFINITY to rlim_t, as the following patch does.
Ok for mainline and the binutils 2.24 branch?
Rainer
2014-02-06 Rainer Orth
* cache.c (bfd_cache_max_open): Cast RLIM_INFINITY to rlim_t.
--- bfd/cache.c 2013/12/08 04:55:47 1.1
+++ bfd/cache.c 2014/02/06 16:13:27
#ifdef HAVE_GETRLIMIT
struct rlimit rlim;
if (getrlimit (RLIMIT_NOFILE, &rlim) == 0
- && rlim.rlim_cur != RLIM_INFINITY)
+ && rlim.rlim_cur != (rlim_t) RLIM_INFINITY)
max = rlim.rlim_cur / 8;
else
#endif /* HAVE_GETRLIMIT */
--
--
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Rainer Orth, Center for Biotechnology, Bielefeld University[/code]作者：yigeshouyiren