From 1c6c9c04b56656d9ab3f486738a4950e71f29b74 Mon Sep 17 00:00:00 2001 From: Mihai Moldovan Date: Fri, 27 Oct 2017 14:14:24 +0200 Subject: nxproxy: use ax_pthread.m4. Works around libtool bug related to using both -nostdlib and -pthread (with the former dropping latter usage.) --- nxproxy/configure.ac | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'nxproxy/configure.ac') diff --git a/nxproxy/configure.ac b/nxproxy/configure.ac index cc8e898fc..b381862c0 100644 --- a/nxproxy/configure.ac +++ b/nxproxy/configure.ac @@ -23,6 +23,17 @@ AC_LANG([C]) NX_COMPILER_BRAND NX_DEFAULT_OPTIONS +dnl This is a workaround for a nasty libtool bug. +dnl We actually compile libXcomp with pthread support, but libtool uses g++ ... -nostdlib ... -pthread +dnl on Linux. -nostdlib causes -pthread to be ignored. +dnl According to GCC upstream, this is not a bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25460 +dnl GCC upstream insists that libtool needs to handle -pthread in a special way when using -nostdlib. +dnl A patch has been submitted to the libtool project: http://lists.gnu.org/archive/html/libtool-patches/2013-11/msg00015.html +dnl but never applied to the code base. Boo. +dnl We will work around this bug by using AX_PTHREAD and linking with pthread support in all consumers of +dnl libXcomp for now. +AX_PTHREAD([], AC_MSG_ERROR([no POSIX threads support detected])) + AC_ARG_ENABLE([cxx11], [AS_HELP_STRING([--enable-cxx11], [enable optional features requiring C++11 support (disabled by default)])], -- cgit v1.2.3