Apache2 mod_jk segfaults with OS X Mavericks - macos

Question

I upgraded to Mavericks just yesterday, and had to reinstall mod_jk for my development environment. Compiling it from source was a bit of a pain. I found this page on a previously-asked question about mod_jk on OS X, but there were a couple extra hoops I had to jump through. For some reason, apxs thinks that gcc lives at:
/Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain/usr/bin/cc
But that exact folder doesn't exist; I had to symlink the existing XcodeDefault.xctoolchain directory:
sudo ln -s XcodeDefault.xctoolchain/ OSX10.9.xctoolchain
Then I tried running configure:
./configure CFLAGS='-arch x86_64' APXSLDFLAGS='-arch x86_64' --with-apxs=/usr/sbin/apxs
However, configure failed because it couldn't find <stdio.h>, so I symlinked the OS X 10.9 toolchain as so:
sudo ln -s /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/ /usr/include
I was able to then compile and install the module by running sudo make install -f Makefile.apxs in the apache-2.0 subdirectory. However, when I started up Apache via sudo apachectl start, it immediately crashes with a segfault:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff875fb866 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff8b8a435c pthread_kill + 92
2 libsystem_c.dylib 0x00007fff92480bba abort + 125
3 libsystem_c.dylib 0x00007fff92480d31 abort_report_np + 181
4 libsystem_c.dylib 0x00007fff924a48c5 __chk_fail + 48
5 libsystem_c.dylib 0x00007fff924a48d5 __chk_fail_overlap + 16
6 libsystem_c.dylib 0x00007fff924a4906 __chk_overlap + 49
7 libsystem_c.dylib 0x00007fff924a4ad1 __strcpy_chk + 64
8 mod_jk.so 0x0000000105a0c631 jk_map_get_int + 225
9 mod_jk.so 0x0000000105a1f7f1 jk_get_worker_maintain_time + 33
10 mod_jk.so 0x0000000105a17683 wc_open + 755
11 mod_jk.so 0x0000000105a2f13f init_jk + 1151
12 mod_jk.so 0x0000000105a28b7e jk_post_config + 1566
13 httpd 0x000000010568b7d5 ap_run_post_config + 133
14 httpd 0x00000001056947c7 main + 2567
15 libdyld.dylib 0x00007fff9176e5fd start + 1
Has anyone had success compiling/running mod_jk with Mavericks yet? Is there something I'm missing or not doing quite right?

Answer 1

The aforementioned bug reported against Tomcat has a proposed patch which is likely to be applied soon. Feel free to use any of the patches described in that bug -- they will all work.

Answer 2

Download latest Tomcat Connectors source from tomcat.apache.org/download-connectors.cgi
Per https://issues.apache.org/bugzilla/show_bug.cgi?id=55696
change the method below in ./native/common/jk_maps.c to what you see here:
int jk_map_get_int(jk_map_t *m, const char *name, int def)
{
const char *rc;
int int_res;
rc = jk_map_get_string(m, name, NULL);
if(NULL == rc) {
int_res = def;
} else {
size_t len = strlen(rc);
int multit = 1;
if (len) {
char buf[100];
char *lastchar;
strncpy(buf, rc, 100);
lastchar = buf + len - 1;
if ('m' == *lastchar || 'M' == *lastchar) {
*lastchar = '\0';
multit = 1024 * 1024;
}
else if ('k' == *lastchar || 'K' == *lastchar) {
*lastchar = '\0';
multit = 1024;
}
int_res = multit * atoi(buf);
}
else
int_res = def;
}
return int_res;
}
Install command line tools
xcode-select --install
Create missing symlink
sudo ln -s /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain
cd ./native
./configure CFLAGS='-arch x86_64' APXSLDFLAGS='-arch x86_64' --with-apxs=/usr/sbin/apxs
chmod 755 scripts/build/instdso.sh
make
sudo make install

Answer 3

WORKAROUND - NOT A SOLUTION
I am encountering the same thing and was unable to get mod_jk to run inside of Apache.
As an alternative to simply get it to work locally and keep moving forward, I changed a few of the apache directives around to use mod_proxy_ajp instead.
LoadModule proxy_module libexec/apache2/mod_proxy.so
LoadModule proxy_ajp_module libexec/apache2/mod_proxy_ajp.so
ProxyPassMatch ^(/.*\.(jsp|json))$ ajp://localhost:8009/$1
ProxyPass /aircharge ajp://localhost:8009/aircharge
...
Since the AJP protocol is still being used, the same connector for Tomcat can be used without modification.