From 9b80126d33174059a03502521d5cb1fdc9b2c3a1 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>

Date: Thu, 12 Jan 2012 17:05:19 +0100

Subject: [PATCH] Do not set RPATH by default

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Former behavior can be forced by setting USE_MM_LD_RUN_PATH

environment variable to 1.

This is copy from `perl' package.

See <https://bugzilla.redhat.com/show_bug.cgi?id=773622>.

Signed-off-by: Petr Písař <ppisar@redhat.com>

---

 lib/ExtUtils/Liblist.pm   |  5 ++++

 lib/ExtUtils/MM_Unix.pm   |  2 +-

 lib/ExtUtils/MakeMaker.pm | 56 ++++++++++++++++++++++++++++++++++++++-

 3 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/lib/ExtUtils/Liblist.pm b/lib/ExtUtils/Liblist.pm

index 44c4c39..3983194 100644

--- a/lib/ExtUtils/Liblist.pm

+++ b/lib/ExtUtils/Liblist.pm

@@ -89,6 +89,11 @@ libraries.  LD_RUN_PATH is a colon separated list of the directories

 in LDLOADLIBS. It is passed as an environment variable to the process

 that links the shared library.

+Fedora extension: This generation of LD_RUN_PATH is disabled by default.

+To use the generated LD_RUN_PATH for all links, set the USE_MM_LD_RUN_PATH

+MakeMaker object attribute / argument, (or set the $USE_MM_LD_RUN_PATH

+environment variable).

+

 =head2 BSLOADLIBS

 List of those libraries that are needed but can be linked in

diff --git a/lib/ExtUtils/MM_Unix.pm b/lib/ExtUtils/MM_Unix.pm

index a0a2ee1..dda54bb 100644

--- a/lib/ExtUtils/MM_Unix.pm

+++ b/lib/ExtUtils/MM_Unix.pm

@@ -1076,7 +1076,7 @@ sub xs_make_dynamic_lib {

     }

     my $ld_run_path_shell = "";

-    if ($self->{LD_RUN_PATH} ne "") {

+    if (($self->{LD_RUN_PATH} ne "") && ($self->{USE_MM_LD_RUN_PATH})) {

         $ld_run_path_shell = 'LD_RUN_PATH="$(LD_RUN_PATH)" ';

     }

diff --git a/lib/ExtUtils/MakeMaker.pm b/lib/ExtUtils/MakeMaker.pm

index 90790d4..f5459eb 100644

--- a/lib/ExtUtils/MakeMaker.pm

+++ b/lib/ExtUtils/MakeMaker.pm

@@ -317,7 +317,7 @@ sub full_setup {

     PERM_DIR PERM_RW PERM_RWX MAGICXS

     PL_FILES PM PM_FILTER PMLIBDIRS PMLIBPARENTDIRS POLLUTE

     PREREQ_FATAL PREREQ_PM PREREQ_PRINT PRINT_PREREQ PUREPERL_ONLY

-    SIGN SKIP TEST_REQUIRES TYPEMAPS UNINST VERSION VERSION_FROM XS

+    SIGN SKIP TEST_REQUIRES TYPEMAPS UNINST USE_MM_LD_RUN_PATH VERSION VERSION_FROM XS

     XSBUILD XSMULTI XSOPT XSPROTOARG XS_VERSION

     clean depend dist dynamic_lib linkext macro realclean tool_autosplit

@@ -503,6 +503,26 @@ sub new {

         $self->_PRINT_PREREQ;

    }

+    # USE_MM_LD_RUN_PATH - another RedHatism to disable automatic RPATH generation

+    if ( ( ! $self->{USE_MM_LD_RUN_PATH} )

+       &&( ("@ARGV" =~ /\bUSE_MM_LD_RUN_PATH(=([01]))?\b/)

+        ||( exists( $ENV{USE_MM_LD_RUN_PATH} )

+           &&( $ENV{USE_MM_LD_RUN_PATH} =~ /([01])?$/ )

+           )

+        )

+       )

+    {

+       my $v = $1;

+       if( $v )

+       {

+           $v = ($v=~/=([01])$/)[0];

+       }else

+       {

+           $v = 1;

+       };

+       $self->{USE_MM_LD_RUN_PATH}=$v;

+    };

+

     print "MakeMaker (v$VERSION)\n" if $Verbose;

     if (-f "MANIFEST" && ! -f "Makefile" && ! $UNDER_CORE){

         check_manifest();

@@ -2839,6 +2859,40 @@ precedence.  A typemap in the current directory has highest

 precedence, even if it isn't listed in TYPEMAPS.  The default system

 typemap has lowest precedence.

+=item USE_MM_LD_RUN_PATH

+

+boolean

+The Fedora perl MakeMaker distribution differs from the standard

+upstream release in that it disables use of the MakeMaker generated

+LD_RUN_PATH by default, UNLESS this attribute is specified , or the

+USE_MM_LD_RUN_PATH environment variable is set during the MakeMaker run.

+

+The upstream MakeMaker will set the ld(1) environment variable LD_RUN_PATH

+to the concatenation of every -L ld(1) option directory in which a -l ld(1)

+option library is found, which is used as the ld(1) -rpath option if none

+is specified. This means that, if your application builds shared libraries

+and your MakeMaker application links to them, that the absolute paths of the

+libraries in the build tree will be inserted into the RPATH header of all

+MakeMaker generated binaries, and that such binaries will be unable to link

+to these libraries if they do not still reside in the build tree directories

+(unlikely) or in the system library directories (/lib or /usr/lib), regardless

+of any LD_LIBRARY_PATH setting. So if you specified -L../mylib -lmylib , and

+ your 'libmylib.so' gets installed into /some_directory_other_than_usr_lib,

+ your MakeMaker application will be unable to link to it, even if LD_LIBRARY_PATH

+is set to include /some_directory_other_than_usr_lib, because RPATH overrides

+LD_LIBRARY_PATH.

+

+So for Fedora MakeMaker builds LD_RUN_PATH is NOT generated by default for

+every link. You can still use explicit -rpath ld options or the LD_RUN_PATH

+environment variable during the build to generate an RPATH for the binaries.

+

+You can set the USE_MM_LD_RUN_PATH attribute to 1 on the MakeMaker command

+line or in the WriteMakefile arguments to enable generation of LD_RUN_PATH

+for every link command.

+

+USE_MM_LD_RUN_PATH will default to 1 (LD_RUN_PATH will be used) IF the

+$USE_MM_LD_RUN_PATH environment variable is set during a MakeMaker run.

+

 =item VENDORPREFIX

 Like PERLPREFIX, but only for the vendor install locations.

-- 

2.20.1