Sender: libc-alpha-owner@sources.redhat.com Date: Tue, 29 Jul 2003 17:49:47 -0400 From: Daniel Jacobowitz To: GNU C Library Subject: Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp Message-ID: <20030729214947.GA29932@nevyn.them.org> On Tue, Jul 29, 2003 at 02:53:33PM -0700, Dan Kegel wrote: > On ppc405, I'm getting the following when linking glibc's libm: > /gcc-3.3-glibc-2.3.2/build-glibc/math/libm_pic.a(fclrexcpt.os)(.text+0x1a): > In function `feclearexcept@GLIBC_2.1': > : undefined reference to `__sim_exceptions' > > That symbol seems to be present in libc.so. nm shows --without-fp doesn't work. Try this. Make up a changelog entry if it works. Date: Tue, 29 Jul 2003 14:56:50 -0700 Message-Id: <200307292156.h6TLuol24356@magilla.sf.frob.com> From: Roland McGrath To: Daniel Jacobowitz Cc: GNU C Library Subject: Re: __sim_exceptions undefined when linking glibc-2.3.2's libm.so with --without-fp In-Reply-To: Daniel Jacobowitz's message of Tuesday, 29 July 2003 17:49:47 -0400 <20030729214947.GA29932@nevyn.them.org> > +int __sim_exceptions __attribute__ ((section(".bss"))); Use __attribute__ ((nocommon)) instead (and please watch the standard whitespace conventions, i.e. ``section (''). diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c --- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/sim-full.c 2002-10-19 16:06:29.000000000 -0400 +++ glibc-2.3.2/sysdeps/powerpc/nofpu/sim-full.c 2003-05-14 15:10:42.000000000 -0400 @@ -24,11 +24,14 @@ /* Global to store sticky exceptions. */ -int __sim_exceptions; +int __sim_exceptions __attribute__ ((nocommon)); +libc_hidden_data_def (__sim_exceptions); /* By default, no exceptions should trap. */ int __sim_disabled_exceptions = 0xffffffff; +libc_hidden_data_def (__sim_disabled_exceptions); -int __sim_round_mode; +int __sim_round_mode __attribute__ ((nocommon)); +libc_hidden_data_def (__sim_round_mode); void __simulate_exceptions (int x) diff -purN glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h --- glibc-2.3.2.orig/sysdeps/powerpc/nofpu/soft-supp.h 2002-10-19 16:06:29.000000000 -0400 +++ glibc-2.3.2/sysdeps/powerpc/nofpu/soft-supp.h 2003-05-14 15:09:53.000000000 -0400 @@ -27,7 +27,11 @@ typedef union } fenv_union_t; -extern int __sim_exceptions attribute_hidden; -extern int __sim_disabled_exceptions attribute_hidden; -extern int __sim_round_mode attribute_hidden; +extern int __sim_exceptions; +libc_hidden_proto (__sim_exceptions); +extern int __sim_disabled_exceptions; +libc_hidden_proto (__sim_disabled_exceptions); +extern int __sim_round_mode; +libc_hidden_proto (__sim_round_mode); + extern void __simulate_exceptions (int x) attribute_hidden; diff -urp glibc-2.3.2.orig/sysdeps/powerpc/soft-fp/sfp-machine.h glibc-2.3.2/sysdeps/powerpc/soft-fp/sfp-machine.h --- glibc-2.3.2.orig/sysdeps/powerpc/soft-fp/sfp-machine.h 2002-10-17 18:36:14.000000000 -0400 +++ glibc-2.3.2/sysdeps/powerpc/soft-fp/sfp-machine.h 2003-05-14 16:48:13.000000000 -0400 @@ -52,7 +52,11 @@ #define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex) #define FP_ROUNDMODE __sim_round_mode -extern int __sim_exceptions attribute_hidden; -extern int __sim_disabled_exceptions attribute_hidden; -extern int __sim_round_mode attribute_hidden; +extern int __sim_exceptions; +libc_hidden_proto (__sim_exceptions); +extern int __sim_disabled_exceptions; +libc_hidden_proto (__sim_disabled_exceptions); +extern int __sim_round_mode; +libc_hidden_proto (__sim_round_mode); + extern void __simulate_exceptions (int x) attribute_hidden;