Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.

Bug 1548676

Summary: openldap: Does not use Fedora build flags
Product: [Fedora] Fedora Reporter: Florian Weimer <fweimer>
Component: openldapAssignee: Matus Honek <mhonek>
Status: CLOSED NEXTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: rawhideCC: fweimer, mhonek, rmeggins
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openldap-2.4.45-13.fc28 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-03-01 15:22:01 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1539083    
Attachments:
Description Flags
consolidate build flags fweimer: review-

Description Florian Weimer 2018-02-24 11:01:09 UTC
The spec file for openldap-2.4.45-11.fc28 contains this:

%ifarch s390 s390x
  export CFLAGS="-fPIE"
%else
  export CFLAGS="-fpie"
%endif
export LDFLAGS="-pie"
# avoid stray dependencies (linker flag --as-needed)
# enable experimental support for LDAP over UDP (LDAP_CONNECTIONLESS)
export CFLAGS="${CFLAGS} %{optflags} -Wl,--as-needed,-z,relro,-z,now -DLDAP_CONNECTIONLESS"

The PIE flags should simply be inherited from the build environment.

Apparently, this causes /usr/lib64/openldap/check_password.so.1.1 to be compiled and linked like this:

gcc -fpie -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -mcet -fcf-protection -Wl,--as-needed,-z,relro,-z,now -DLDAP_CONNECTIONLESS -fpic -DHAVE_CRACKLIB -DCRACKLIB_DICTPATH="\"/usr/share/cracklib/pw_dict\"" -DCONFIG_FILE="\"/etc/openldap/check_password.conf\"" -DDEBUG -c -I../openldap-2.4.45/include  -I../openldap-2.4.45/servers/slapd  -I../openldap-2.4.45/build-servers/include check_password.c
gcc -pie -shared -o check_password.so check_password.o -lcrack

-pie -shared does not make sense, and the usual LDFLAGS from redhat-rpm-config are missing.

See https://src.fedoraproject.org/rpms/redhat-rpm-config/blob/master/f/buildflags.md for information on RPM macros and environment variables provided by the build environment.

Comment 1 Matus Honek 2018-02-26 12:50:03 UTC
Created attachment 1400831 [details]
consolidate build flags

Thanks for looking into this. I'm attaching a patch that should resolve the issue. However, before applying it I'd like to have the possible issue described in the following paragraph resolved.

However, I'm a bit concerned about the -fPIE vs. -fpie on s390/s390x vs. others. I'm not sure if this is somehow taken into account with the redhat-rpm-config. I'd like to avoid reintroducing bug 1020661. I cannot see from the build.log if the flag was actually pulled in as it is included with -specs. Anyway, I'd like to prevent a possible regression in the future. Could you please provide some guidance here?

Thanks.

Comment 2 Florian Weimer 2018-02-26 12:52:41 UTC
(In reply to Matus Honek from comment #1)
> However, I'm a bit concerned about the -fPIE vs. -fpie on s390/s390x vs.
> others. I'm not sure if this is somehow taken into account with the
> redhat-rpm-config. I'd like to avoid reintroducing bug 1020661. I cannot see
> from the build.log if the flag was actually pulled in as it is included with
> -specs. Anyway, I'd like to prevent a possible regression in the future.
> Could you please provide some guidance here?

The GCC specs fragment will use -fPIC or -fPIE, to be conservative.  It will not override -fpic or -fpie specified on the command line, but if there is nothing there, it will use the version that supports larger shared objects.

Comment 3 Florian Weimer 2018-02-26 12:54:30 UTC
(In reply to Matus Honek from comment #1)
> Created attachment 1400831 [details]
> consolidate build flags

I don't like the explicit list of flags there:

+export CFLAGS="${CFLAGS} -Wl,--as-needed,-z,relro,-z,now -DLDAP_CONNECTIONLESS"

It should be something like this, to inherit all future changes in redhat-rpm-config:

+export CFLAGS="${CFLAGS} ${LDFLAGS} -Wl,--as-needed -DLDAP_CONNECTIONLESS"

Comment 6 Matus Honek 2018-03-01 15:22:01 UTC
Applying as Florian proposed. The effective flags in the build.log look fine.
https://src.fedoraproject.org/rpms/openldap/c/cd7bdcf821f7ae4c1d97189129cdbbfdfe9d5210?branch=f28

Also dropping an old unnecessary patch:
https://src.fedoraproject.org/rpms/openldap/c/6f8a4c6436709dd6c43c64e8006bc26946cab63f?branch=f28