Bug 59959 - Centos 6.7: dlopen's need for libdl.so.2 (-ldl) not detected by autoconf
Summary: Centos 6.7: dlopen's need for libdl.so.2 (-ldl) not detected by autoconf
Alias: None
Product: Apache httpd-2
Classification: Unclassified
Component: Build (show other bugs)
Version: 2.2.31
Hardware: Other All
: P2 normal (vote)
Target Milestone: ---
Assignee: Apache HTTPD Bugs Mailing List
Keywords: MassUpdate
Depends on:
Reported: 2016-08-08 18:31 UTC by Stefan
Modified: 2018-11-07 21:08 UTC (History)
0 users


Note You need to log in before you can comment on or make changes to this bug.
Description Stefan 2016-08-08 18:31:29 UTC
srclib/apr/configure checks for availability of dlopen by issuing

   gcc -o conftest -g -O2 -pthread -DLINUX -D_REENTRANT -D_GNU_SOURCE  conftest.c -lrt -lcrypt  -lpthread >&5

Using Centos 6.7 this test succeeds because libcrypt.so refers to libfreebl3.so (Mozilla NSS) which contains a Shared Library entry "libdl.so.2". This causes httpd to be not dynamically linked to libdl.so.2.

That httpd will not run on other Systems where libcrypt.so is not linked to NSS, e.g. Debian 8.

Workaround: Set LIBS=-ldl before configure
Comment 1 William A. Rowe Jr. 2018-11-07 21:08:19 UTC
Please help us to refine our list of open and current defects; this is a mass update of old and inactive Bugzilla reports which reflect user error, already resolved defects, and still-existing defects in httpd.

As repeatedly announced, the Apache HTTP Server Project has discontinued all development and patch review of the 2.2.x series of releases. The final release 2.2.34 was published in July 2017, and no further evaluation of bug reports or security risks will be considered or published for 2.2.x releases. All reports older than 2.4.x have been updated to status RESOLVED/LATER; no further action is expected unless the report still applies to a current version of httpd.

If your report represented a question or confusion about how to use an httpd feature, an unexpected server behavior, problems building or installing httpd, or working with an external component (a third party module, browser etc.) we ask you to start by bringing your question to the User Support and Discussion mailing list, see [https://httpd.apache.org/lists.html#http-users] for details. Include a link to this Bugzilla report for completeness with your question.

If your report was clearly a defect in httpd or a feature request, we ask that you retest using a modern httpd release (2.4.33 or later) released in the past year. If it can be reproduced, please reopen this bug and change the Version field above to the httpd version you have reconfirmed with.

Your help in identifying defects or enhancements still applicable to the current httpd server software release is greatly appreciated.