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Date: Tue, 19 Sep 2017 16:54:00 -0000
From: Joseph Myers <joseph@codesourcery.com>
To: Howard Chu <hyc@symas.com>
CC: <binutils@sourceware.org>
Subject: Re: dependency list for static libraries
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You can install a linker script under a .a file name to achieve this 
effect.  On x86_64, glibc's libm.a now looks like:

/* GNU ld script
*/
OUTPUT_FORMAT(elf64-x86-64)
GROUP ( /usr/lib64/libm-2.26.90.a /usr/lib64/libmvec.a )

-- 
Joseph S. Myers
joseph@codesourcery.com