ruby-changes:54602
From: k0kubun <ko1@a...>
Date: Mon, 14 Jan 2019 16:28:40 +0900 (JST)
Subject: [ruby-changes:54602] k0kubun:r66817 (trunk): mjit_worker.c: pass -nostdlib when making pch as well
k0kubun 2019-01-14 16:28:34 +0900 (Mon, 14 Jan 2019) New Revision: 66817 https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66817 Log: mjit_worker.c: pass -nostdlib when making pch as well [Bug #15513] Modified files: trunk/mjit_worker.c Index: mjit_worker.c =================================================================== --- mjit_worker.c (revision 66816) +++ mjit_worker.c (revision 66817) @@ -247,6 +247,14 @@ static char *libruby_pathflag; https://github.com/ruby/ruby/blob/trunk/mjit_worker.c#L247 # define MJIT_CFLAGS_PIPE 0 #endif +// Use `-nodefaultlibs -nostdlib` for GCC where possible, which does not work on mingw and cygwin. +// This seems to improve MJIT performance on GCC. +#if defined __GNUC__ && !defined __clang__ && !defined(_WIN32) && !defined(__CYGWIN__) +# define GCC_NOSTDLIB_FLAGS "-nodefaultlibs", "-nostdlib", +#else +# define GCC_NOSTDLIB_FLAGS /* empty */ +#endif + static const char *const CC_COMMON_ARGS[] = { MJIT_CC_COMMON MJIT_CFLAGS GCC_PIC_FLAGS NULL @@ -260,11 +268,8 @@ static const char *const CC_DLDFLAGS_ARG https://github.com/ruby/ruby/blob/trunk/mjit_worker.c#L268 MJIT_DLDFLAGS #if defined __GNUC__ && !defined __clang__ "-nostartfiles", -# if !defined(_WIN32) && !defined(__CYGWIN__) - "-nodefaultlibs", "-nostdlib", -# endif #endif - NULL + GCC_NOSTDLIB_FLAGS NULL }; static const char *const CC_LIBS[] = { @@ -734,6 +739,9 @@ make_pch(void) https://github.com/ruby/ruby/blob/trunk/mjit_worker.c#L739 # ifdef __clang__ "-emit-pch", # endif + // -nodefaultlibs is a linker flag, but it may affect cc1 behavior on Gentoo, which should NOT be changed on pch: + // https://gitweb.gentoo.org/proj/gcc-patches.git/tree/7.3.0/gentoo/13_all_default-ssp-fix.patch + GCC_NOSTDLIB_FLAGS "-o", NULL, NULL, NULL, }; -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/