I'm a newbie to Tomcat and I'm having trouble getting mod_jk.so to link
right. I've tried everything I know, scanned the FAQ, and made a stab at
searching the mailing list archives, all with no success.
Environment: FreeBSD 4.1-RELEASE, JDK 1.1.8 and gmake installed via
/usr/ports, Apache 1.3.19 + mod_ssl 2.8.1 installed from source.
I'm trying to build mod_jk from Tomcat 3.2.1. On the first try, I
installed mod_jk.so, updated httpd.conf appropriately, and restarted Apache
only to get:
Cannot load /usr/local/apache/libexec/mod_jk.so into server:
/usr/local/apache/libexec/mod_jk.so: Undefined symbol "fdatasync"
After a little digging, I found fdatasync in ../jk/jkutil.c surrounded by
"#ifndef FREEBSD/#endif", so it shouldn't have compiled. Then I noticed
that Makefile.freebsd had CFLAGS=-DLINUX. Hmph. So I changed that to
-DFREEBSD and remade. Now I get this:
Cannot load /usr/local/apache/libexec/mod_jk.so into server:
/usr/local/apache/libexec/mod_jk.so: Undefined symbol "pthread_mutex_unlock"
Grrr... OK, I noticed that the gcc command invoked by apxs to link
mod_jk.so didn't include -pthread, so I relinked manually and specify
-pthread. Same problem. [Grinds teeth...] I tried manually relinking
again, but instead of using -pthreads I appended "-lc_r" to the link
command to force it to use libc_r. Now Apache dies as soon as it starts,
without logging anything to error_log. I guess it crashes during the
LoadModule for mod_jk.so (why -pthread and -lc_r should behave differently
is beyond me). Hoping to get it to spit something useful to my terminal, I
ran it as "httpd -X". Now it works! I can execute servlets and
everything. What the **** is going on here? Finally, I manually linked
one more time but specified /usr/lib/libc_r.a to force a static link
instead of the default dynamic link against libc_r.so. That made Apache
die with SIGSEGV.
I looked around through the source code and found that the pthread_mutex
stuff is used only in jk_ajp13_worker.c, so I compiled and linked without
AJP13 support and everything works properly. However, I'd really like to
have AJP13 support because the documentation says that this provides better
SSL support.
I usually try to figure this stuff out for myself before appealing to a
mailing list with what must surely be a FAQ, but I'm at my wits end. Any
help would be greatly appreciated.
Many thanks,
++Don
--
Donald L. Nash, <[EMAIL PROTECTED]>, PGP Key ID: 0x689DA021
The University of Texas System Office of Telecommunication Services
