https://bugs.openldap.org/show_bug.cgi?id=9648
Issue ID: 9648
Summary: 'MAXPATHLEN' undeclared on some systems
Product: OpenLDAP
Version: 2.5.4
Hardware: All
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: ---
Component: libraries
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 834
--> https://bugs.openldap.org/attachment.cgi?id=834&action=edit
Docker reproduction
I'm trying to compile OpenLDAP 2.5.7 on Alpine Linux, but have verified that
the problem exists since 2.5.4. Version 2.4.59 compiles correctly with
everything else equal.
Compilation fails with
In file included from ldap-int.h:119,
from request.c:53:
request.c: In function 'ldap_dump_connection':
../../include/ldap_pvt.h:181:25: error: 'MAXPATHLEN' undeclared (first use in
this function)
181 | #define LDAP_IPADDRLEN (MAXPATHLEN + sizeof("PATH="))
| ^~~~~~~~~~
request.c:859:17: note: in expansion of macro 'LDAP_IPADDRLEN'
859 | char from[LDAP_IPADDRLEN];
| ^~~~~~~~~~~~~~
../../include/ldap_pvt.h:181:25: note: each undeclared identifier is reported
only once for each function it appears in
181 | #define LDAP_IPADDRLEN (MAXPATHLEN + sizeof("PATH="))
| ^~~~~~~~~~
request.c:859:17: note: in expansion of macro 'LDAP_IPADDRLEN'
859 | char from[LDAP_IPADDRLEN];
| ^~~~~~~~~~~~~~
make[2]: Leaving directory '/tmp/openldap/libraries/libldap'
Thanks to JoBbZ on IRC I found out that including <ac/param.h> in ldap_pvt.h
seems to fix the issue.
My best guess as to why this fails on Alpine Linux and not on other
distributions is that Alpine uses musl instead of glibc as it's libc
implementation.
I have attacked an (unfinished) dockerfile for reproduction of the issue.
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