From 9097e666d48c9b6c0263dcbe60b5af69ff7689f4 Mon Sep 17 00:00:00 2001 From: Mark H Weaver Date: Thu, 1 Jan 2015 22:53:55 -0500 Subject: gnu: gcc: Add '-lgcc_s' only when '-pthread' is given. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Suggested by Ludovic Courtès . * gnu/packages/gcc.scm (gcc-4.7): In our modified GNU_USER_TARGET_LIB_SPEC, add '-lgcc_s' only when '-pthread' is given. --- gnu/packages/gcc.scm | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'gnu') diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm index a510af48a0..df161193c1 100644 --- a/gnu/packages/gcc.scm +++ b/gnu/packages/gcc.scm @@ -1,5 +1,6 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2012, 2013, 2014 Ludovic Courtès +;;; Copyright © 2015 Mark H Weaver ;;; ;;; This file is part of GNU Guix. ;;; @@ -201,14 +202,15 @@ (define-public gcc-4.7 (substitute* (find-files "gcc/config" "^gnu-user.*\\.h$") (("#define GNU_USER_TARGET_LIB_SPEC (.*)$" _ suffix) - ;; Help libgcc_s.so be found (see also below.) Always use - ;; '-lgcc_s' so that libgcc_s.so is always found by those - ;; programs that use 'pthread_cancel' (glibc dlopens - ;; libgcc_s.so when pthread_cancel support is needed, but - ;; having it in the application's RUNPATH isn't enough; see + ;; Help libgcc_s.so be found (see also below.) When + ;; -pthread is given, use '-lgcc_s' so that libgcc_s.so is + ;; always found by those programs that use 'pthread_cancel' + ;; (glibc dlopens libgcc_s.so when pthread_cancel support + ;; is needed, but having it in the application's RUNPATH + ;; isn't enough; see ;; .) (format #f "#define GNU_USER_TARGET_LIB_SPEC \ -\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib64 -rpath=~a/lib -lgcc_s}} \" ~a" +\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib64 -rpath=~a/lib %{pthread:-lgcc_s}}} \" ~a" libc libc libdir libdir suffix)) (("#define GNU_USER_TARGET_STARTFILE_SPEC.*$" line) (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\" -- cgit v1.2.3