Undefined symbol while loading mod_dav_svn.so

[Rodolfo Schulz de Lima <ro...@rodsoft.org>]

I've just downloaded subversion-0.33.1 and tried to prepare to compile
it using autogen.sh. Well, autogen.sh and configure works, but 'make'
didn't work. It complains that libtool is missing when compiling
subversion/libsvn_ra, and other libraries inside. After doing just a
normal ./configure (without autogen), it compiled and installed fine.
After some thought and peeking around, I discovered that autogen.sh
somehow made abs_srcdir and abs_builddir equal to ., instead of the full pathname. This alone made the compilation fail.

The second issue (without solution for me yet) happens when I try to
load the httpd server. The following message shows up and the server
doesn't load.

Syntax error on line 20 of /etc/httpd.conf:
Cannot load /usr/lib/apache/mod_dav_svn.so into server:
/usr/lib/libsvn_subr-1.so.0: undefined symbol: apr_file_mtime_set.
Running ldd on libsvn_Subr-1.so.0, we have:

[rodolfo@servidor /usr/lib]$ ldd libsvn_subr-1.so.0
        libaprutil-0.so.0 => /usr/lib/libaprutil-0.so.0 (0x40035000)
        libgdbm.so.3 => /usr/lib/libgdbm.so.3 (0x4004e000)
        libdb-4.1.so => /usr/lib/libdb-4.1.so (0x40054000)
        libexpat.so.0 => /usr/lib/libexpat.so.0 (0x400fc000)
        libapr-0.so.0 => /usr/lib/libapr-0.so.0 (0x4011b000)
        librt.so.1 => /lib/librt.so.1 (0x4013e000)
        libm.so.6 => /lib/libm.so.6 (0x40150000)
	libcrypt.so.1 => /lib/libcrypt.so.1 (0x40174000)
	libnsl.so.1 => /lib/libnsl.so.1 (0x401a1000)
        libdl.so.2 => /lib/libdl.so.2 (0x401b4000)
        libc.so.6 => /lib/libc.so.6 (0x401b7000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x402dc000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)

Doing nm on libapr-0.so.0, looking for apr_file_mtime_set, we have:

[rodolfo@servidor /usr/lib]$ nm libapr-0.so.0 | grep apr_file_mtime_set
000107ce T apr_file_mtime_set

So, the function is there. Why doesn't libsvn_subr-1.so.0 get it??

Regards, Rodolfo Lima.

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Re: Undefined symbol while loading mod_dav_svn.so

[Ben Collins-Sussman <su...@collab.net>]

On Tue, 2003-11-18 at 18:51, Rodolfo Schulz de Lima wrote:

> [rodolfo@servidor /usr/lib]$ nm libapr-0.so.0 | grep apr_file_mtime_set
> 000107ce T apr_file_mtime_set
> 
> So, the function is there. Why doesn't libsvn_subr-1.so.0 get it??

Probably because you're running apache 2.0.47, while svn 0.33 requires
apache 2.0.48.  mod_dav_svn, when loading into apache, is linking
against the "old" apr that's part of the apache installation.



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