From a436b3b2d4524447c59d8f4003895d626cab309c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Fri, 20 May 2011 11:54:18 +0100 Subject: [PATCH] gallivm: Fix for dynamically linked LLVM 2.8 library. This prevents the error prog: for the -disable-mmx option: may only occur zero or one times! when creating a new context after XCloseDisplay with DRI drivers linked with a shared LLVM 2.8 library. --- src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp index 0ccf6a6..d2d7ecc 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp +++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp @@ -106,13 +106,23 @@ lp_set_target_options(void) * See also: * - http://llvm.org/bugs/show_bug.cgi?id=3287 * - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/ + * + * The -disable-mmx global option can be specified only once since we + * dynamically link against LLVM it will reside in a separate shared object, + * which may or not be delete when this shared object is, so we use the + * llvm::DisablePrettyStackTrace variable (which we set below and should + * reside in the same shared library) to determine whether the -disable-mmx + * option has been set or not. + * + * Thankfully this ugly hack is not necessary on LLVM 2.9 onwards. */ - static boolean first = TRUE; - if (first) { + if (!llvm::DisablePrettyStackTrace) { + static boolean first = TRUE; static const char* options[] = { "prog", "-disable-mmx" }; + assert(first); llvm::cl::ParseCommandLineOptions(2, const_cast(options)); first = FALSE; } -- 2.7.4