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<!-- $Id$ -->
<html><head>
<title>Linux Configuration Support for ACE</title>
<link rev=made href="mailto:levine@cs.wustl.edu">
</head>
<BODY text = "#000000"
link="#000fff"
vlink="#ff0f0f"
bgcolor="#ffffff">
<center>
<h1>Linux Configuration Support for ACE</h1>
<font size=+1>
<a href="mailto:levine@cs.wustl.edu">levine@cs.wustl.edu</a><br>
</font>
</center>
<h2> </h2>
With RedHat 5.0 distributions of Linux, it's best to upgrade the
distribution with these:
<ul>
<li>egcs 1.0.2
<li>glibc-2.0.7-7 or<br>
glibc-2.0.6 (from ftp://sunsite.unc.edu/pub/gnu plus Torbjörn's patch,
<a href="#Old Patches">below</a>)
</ul>
Thanks to James CE Johnson <jjohnson@lads.com>, Torbjörn
Lindgren <tl@funcom.com>, and Oleg Krivosheev
<kriol@fnal.gov> for this information. With the above
configuration, ACE compiles and runs cleanly on Intel platforms. It
compiles and runs cleanly on Alpha platforms with the patches listed
below.<p>
<strong><blink><font color="#ff0000">WARNING:</font></blink></strong>
There is a bug in <code>getsockname ()</code> on versions of Linux
through 2.0.30, at least. <code>getsockname ()</code> returns an
Internet host address of 127.0.0.1 (localhost) instead of 0.0.0.0 for
sockets that aren't connected. This bug prevents TAO servers from
working correctly. To fix it, comment out these two lines in function
<code>inet_getname ()</code> in
<code>/usr/src/linux/net/ipv4/af_inet.c</code>:
<pre>
} else {
__u32 addr = sk->rcv_saddr;
if (!addr) {
addr = sk->saddr;
/* comment out this line: if (!addr) */
/* comment out this line: addr = ip_my_addr(); */
}
sin->sin_port = sk->dummy_th.source;
sin->sin_addr.s_addr = addr;
}
</pre>
and rebuild your kernel. This fix has been implemented in 2.1.x
versions of the kernel.<p>
Without the following patch from Scott Snyder <sss@d0linux01.fnal.gov>,
egcs 1.0.1 on Linux won't be able to compile
netsvcs/lib/Server_Logging_Handler.cpp:
<pre>
1997-12-10 scott snyder <sss@d0linux01.fnal.gov>
* method.c (make_thunk): Avoid name buffer overflow.
Index: gcc/cp/method.c
===================================================================
RCS file: /d0sgi0/usr0/snyder/CVSROOT/egcs/gcc/cp/method.c,v
retrieving revision 1.1.1.5
diff -c -r1.1.1.5 method.c
*** method.c 1997/12/08 21:06:03 1.1.1.5
--- method.c 1997/12/11 05:40:37
***************
*** 1811,1817 ****
tree function;
int delta;
{
! char buffer[250];
tree thunk_id;
tree thunk;
char *func_name;
--- 1811,1817 ----
tree function;
int delta;
{
! char *buffer;
tree thunk_id;
tree thunk;
char *func_name;
***************
*** 1822,1827 ****
--- 1822,1828 ----
if (TREE_CODE (func_decl) != FUNCTION_DECL)
abort ();
func_name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (func_decl));
+ buffer = (char *)alloca (strlen (func_name) + 32);
if (delta<=0)
sprintf (buffer, "__thunk_%d_%s", -delta, func_name);
else
</pre>
With RedHat 5.0 on Alpha CPUs, two system patches and one
glibc-2.0.6/linuxthreads patch are necessary in addition to the above.
The first patch is for the GNU assembler, gas. It is only necessary
on Alphas, and only when <code>-g</code> is used. If you don't want
to patch the assembler, you can enable the SUPPRESS_DASH_G option in
the <code>platform_linux.GNu</code>. Otherwise, this patch can be
applied to the binutils gas source. Then, rebuild and install as.
The file to be patched is binutils-2.8.1/gas/config/tc-alpha.h:<p>
<pre>
--- tc-alpha.h.orig Mon May 26 12:32:38 1997
+++ tc-alpha.h Sat Feb 28 06:45:41 1998
@@ -25,6 +25,8 @@
#define TARGET_ARCH bfd_arch_alpha
+#define PAGE_SIZE 8192
+
#define TARGET_FORMAT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
? "ecoff-littlealpha" \
: OUTPUT_FLAVOR == bfd_target_elf_flavour \
</pre><p>
In addition, you'll need to patch
<code>/usr/src/linux/include/linux/posix_types.h</code> as follows
to avoid compilation errors:<p>
<pre>
--- posix_types.h.ORIGINAL Wed Nov 12 12:01:56 1997
+++ posix_types.h Fri Feb 27 14:13:16 1998
@@ -41,9 +41,14 @@
#undef __FDMASK
#define __FDMASK(d) (1UL << ((d) % __NFDBITS))
+#if defined (__KERNEL__)
typedef struct fd_set {
unsigned long fds_bits [__FDSET_LONGS];
} __kernel_fd_set;
+#else /* ! __KERNEL__ */
+#include <gnu/types.h>
+typedef __fd_set __kernel_fd_set;
+#endif /* ! __KERNEL__ */
/* Type of a signal handler. */
typedef void (*__kernel_sighandler_t)(int);
</pre><p>
Finally, on Alpha only, I removed wrapsyscall from the LinuxThreads
library by patching linuxthreads/Makefile:
<pre>
36c36
< semaphore wrapsyscall
---
> semaphore # wrapsyscall
</pre>
With that and the above configuration/pathes, all ACE tests run
perfectly cleanly on Alpha!<p>
<hr>
<h3><a name="Old Patches">Old Patches</a></h3>
If you use glibc-2.0.6, you'll need to apply Torbjörn Lindgren's
<tl@funcom.com> patch to glibc-2.0.6's LinuxThreads:<p>
<pre>
--- signals.c.old Wed Jan 14 01:09:02 1998
+++ signals.c Wed Jan 14 01:11:37 1998
@@ -82,7 +82,7 @@
pthread_mutex_lock(&sigwaited_mut);
/* Make sure no other thread is waiting on our signals */
test_again:
- for (s = 0; s < NSIG; s++) {
+ for (s = 1; s < NSIG; s++) {
if (sigismember(set, s) && sigismember(&sigwaited, s)) {
pthread_cond_wait(&sigwaited_changed, &sigwaited_mut);
goto test_again;
@@ -96,7 +96,7 @@
/* Install our signal handler on all signals in set,
and unblock them in mask.
Also mark those signals as being sigwaited on */
- for (s = 1; s <= NSIG; s++) {
+ for (s = 1; s < NSIG; s++) {
if (sigismember(set, s) && s != PTHREAD_SIG_CANCEL) {
sigdelset(&mask, s);
action.sa_handler = __pthread_sighandler;
@@ -121,7 +121,7 @@
self->p_cancel_jmp = NULL;
/* The signals are now reblocked. Restore the sighandlers. */
pthread_mutex_lock(&sigwaited_mut);
- for (s = 1; s <= NSIG; s++) {
+ for (s = 1; s < NSIG; s++) {
if (sigismember(set, s) && s != PTHREAD_SIG_CANCEL) {
sigaction(s, &(saved_signals[s]), NULL);
sigdelset(&sigwaited, s);
</pre>
</body> </html>
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