https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81080
Bug ID: 81080
Summary: target libgcov not built with large file support
Product: gcc
Version: 7.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
CC: jsm28 at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Target: x86_64-*-*
On x86_64 the 32bit libgcov runtime is not built with large file support. It
seems we end up including tconfig.h which will simply source auto-host.h which
is _not_ appropriate (or enough) for multilibs?
It looks like the auto-target.h produced in libgcc/ is only included from
unwind-c.c though which seems kind-of odd (it's also odd that it includes
it _after_ tsystem.h ...)
The following seems to work to produce a
x86_64-unknown-linux-gnu/32/libgcc/libgcov.a with LFS support:
Index: configure.ac
===================================================================
--- configure.ac (revision 249145)
+++ configure.ac (working copy)
@@ -191,6 +191,8 @@ GCC_NO_EXECUTABLES
AC_PROG_CC
AC_PROG_CPP_WERROR
+AC_SYS_LARGEFILE
+
AC_CHECK_SIZEOF([double])
AC_CHECK_SIZEOF([long double])
AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
Index: libgcov.h
===================================================================
--- libgcov.h (revision 249145)
+++ libgcov.h (working copy)
@@ -38,6 +38,7 @@
/* This path will be used by libgcov runtime. */
#include "tconfig.h"
+#include "auto-target.h"
#include "tsystem.h"
#include "coretypes.h"
#include "tm.h"
Joseph, is the above a suitable fix?
