From: David Bremner Date: Fri, 6 Mar 2015 21:57:51 +0000 (+0100) Subject: [Patch v2 2/4] build/ruby: make use of -Wl,--no-undefined configurable X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=95c3eeeb4c71cbd146d3074e3f5fda46fa02efb3;p=notmuch-archives.git [Patch v2 2/4] build/ruby: make use of -Wl,--no-undefined configurable --- diff --git a/b0/7e4d4b70463511c20e293795127663877c0244 b/b0/7e4d4b70463511c20e293795127663877c0244 new file mode 100644 index 000000000..6746fe2ab --- /dev/null +++ b/b0/7e4d4b70463511c20e293795127663877c0244 @@ -0,0 +1,124 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id F401B431FD2 + for ; Fri, 6 Mar 2015 13:59:36 -0800 (PST) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: 2.438 +X-Spam-Level: ** +X-Spam-Status: No, score=2.438 tagged_above=-999 required=5 + tests=[DNS_FROM_AHBL_RHSBL=2.438] autolearn=disabled +Received: from olra.theworths.org ([127.0.0.1]) + by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id AQhpaw6y13ZN for ; + Fri, 6 Mar 2015 13:59:35 -0800 (PST) +Received: from mx.xen14.node3324.gplhost.com (gitolite.debian.net + [87.98.215.224]) + (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) + (No client certificate requested) + by olra.theworths.org (Postfix) with ESMTPS id 6D772431FCF + for ; Fri, 6 Mar 2015 13:59:31 -0800 (PST) +Received: from remotemail by mx.xen14.node3324.gplhost.com with local (Exim + 4.80) (envelope-from ) + id 1YU0Gg-0000RV-B4; Fri, 06 Mar 2015 21:58:50 +0000 +Received: (nullmailer pid 30537 invoked by uid 1000); Fri, 06 Mar 2015 + 21:57:57 -0000 +From: David Bremner +To: notmuch@notmuchmail.org +Subject: [Patch v2 2/4] build/ruby: make use of -Wl,--no-undefined + configurable +Date: Fri, 6 Mar 2015 22:57:51 +0100 +Message-Id: <1425679073-30439-3-git-send-email-david@tethera.net> +X-Mailer: git-send-email 2.1.4 +In-Reply-To: <1425679073-30439-1-git-send-email-david@tethera.net> +References: <1420114600-28396-6-git-send-email-david@tethera.net> + <1425679073-30439-1-git-send-email-david@tethera.net> +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.13 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Fri, 06 Mar 2015 21:59:38 -0000 + +In particular this is supposed to help build on systems (presumably +using a non-gnu ld) where this flag is not available. +--- + bindings/Makefile.local | 4 +++- + bindings/ruby/extconf.rb | 5 +++-- + configure | 13 +++++++++++++ + 3 files changed, 19 insertions(+), 3 deletions(-) + +diff --git a/bindings/Makefile.local b/bindings/Makefile.local +index 6ed1344..210055f 100644 +--- a/bindings/Makefile.local ++++ b/bindings/Makefile.local +@@ -5,7 +5,9 @@ dir := bindings + # force the shared library to be build + ruby-bindings: lib/libnotmuch.so + ifeq ($(HAVE_RUBY_DEV),1) +- cd $(dir)/ruby && ruby extconf.rb --vendor ++ cd $(dir)/ruby && \ ++ EXTRA_LDFLAGS="$(NO_UNDEFINED_LDFLAGS)" \ ++ ruby extconf.rb --vendor + $(MAKE) -C $(dir)/ruby + else + @echo Missing dependency, skipping ruby bindings +diff --git a/bindings/ruby/extconf.rb b/bindings/ruby/extconf.rb +index 6160db2..6d5607e 100644 +--- a/bindings/ruby/extconf.rb ++++ b/bindings/ruby/extconf.rb +@@ -10,8 +10,9 @@ dir = File.join('..', '..', 'lib') + # includes + $INCFLAGS = "-I#{dir} #{$INCFLAGS}" + +-# make sure there are no undefined symbols +-$LDFLAGS += ' -Wl,--no-undefined' ++if ENV['EXTRA_LDFLAGS'] ++ $LDFLAGS += " " + ENV['EXTRA_LDFLAGS'] ++end + + def have_local_library(lib, path, func, headers = nil) + checking_for checking_message(func, lib) do +diff --git a/configure b/configure +index 3ca9bed..409bb60 100755 +--- a/configure ++++ b/configure +@@ -722,6 +722,16 @@ else + as_needed_ldflags="" + fi + ++printf "Checking for -Wl,--no-undefined... " ++if ${CC} -Wl,--no-undefined -o minimal minimal.c >/dev/null 2>&1 ++then ++ printf "Yes.\n" ++ no_undefined_ldflags="-Wl,--no-undefined" ++else ++ printf "No (nothing to worry about).\n" ++ no_undefined_ldflags="" ++fi ++ + WARN_CXXFLAGS="" + printf "Checking for available C++ compiler warning flags... " + for flag in -Wall -Wextra -Wwrite-strings; do +@@ -926,6 +936,9 @@ RPATH_LDFLAGS = ${rpath_ldflags} + # Flags needed to have linker link only to necessary libraries + AS_NEEDED_LDFLAGS = ${as_needed_ldflags} + ++# Flags to have the linker flag undefined symbols in object files ++NO_UNDEFINED_LDFLAGS = ${no_undefined_ldflags} ++ + # Whether valgrind header files are available + HAVE_VALGRIND = ${have_valgrind} + +-- +2.1.4 +