Re: [Chicken-hackers] [PATCH] use -headerpad_max_install_names on Mac OS X when linking shared libs

[Jim Ursetto]

I normally do this in CSC_OPTIONS because it's in the makefile for the compiler 
but it isn't transmitted to chicken-install.

I think it is ok to hardcode it in csc.scm (I use -headerpad 128). Only thing 
I'm not sure about offhand is whether the max_install_names variant is 
available on all OS X versions.  I seem to recall it is fairly recent.

On Aug 29, 2013, at 5:45, Felix Winkelmann <address@hidden> wrote:

> Since we use install_name_tool(1) to modify the runpath of shared libraries 
> compiled
> with csc (all *.so's), this may fail, if the space inside the binary is 
> insufficient
> to hold the new updated paths. The patch adds "-headerpad_max_install_names" 
> to the
> linker command (both for gcc(1) and by using "-Wl,..." for the linker, I 
> found this
> on the 'net, so I'm not sure if this is really required).
> 
> 
> felix
> From 2f8748e0989279d2521d3f6e14981c1403322068 Mon Sep 17 00:00:00 2001 From: 
> felix Date: Tue, 27 Aug 2013 16:15:12 +0200 Subject: [PATCH] on darwin, pass 
> -headerpad_max_install_names or install_name_tool may fail, depending on path 
> length. and all that just to save a few kb, thank you, Apple! --- csc.scm | 2 
> +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/csc.scm 
> b/csc.scm index a54c14c..ce35559 100644 --- a/csc.scm +++ b/csc.scm @@ -519,7 
> +519,7 @@ EOF (set! compile-options (append pic-options '("-DC_SHARED") 
> compile-options)) (set! link-options (cons (cond - (osx (if lib "-dynamiclib" 
> "-bundle")) + (osx (if lib "-dynamiclib" "-bundle 
> -Wl,-headerpad_max_install_names -headerpad_max_install_names")) (else 
> "-shared")) link-options)) (set! shared #t) ) -- 1.7.9.5
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