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Hi! All IA-64 compilers which support HAVE_VISIBILITY_ATTRIBUTE make GP relative relocs for static and hidden vars, on Alpha similarly with the exception of Red Hat gcc-3.2-2 and earlier. 2002-08-28 Jakub Jelinek <jakub@redhat.com> * sysdeps/ia64/elf/configure.in (PI_STATIC_AND_HIDDEN): Define unconditionally. * sysdeps/ia64/elf/configure: Rebuilt. * sysdeps/alpha/elf/configure.in (libc_cv_alpha_hidden_gprel): New check. (PI_STATIC_AND_HIDDEN): Define if check succeeded. * sysdeps/alpha/elf/configure: Rebuilt. --- libc/sysdeps/ia64/elf/configure.in.jj 2002-08-28 22:13:57.000000000 +0200 +++ libc/sysdeps/ia64/elf/configure.in 2002-08-28 22:14:28.000000000 +0200 @@ -0,0 +1,7 @@ +sinclude(./aclocal.m4)dnl Autoconf lossage +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/ia64/elf. + +dnl It is always possible to access static and hidden symbols in an +dnl position independent way. +AC_DEFINE(PI_STATIC_AND_HIDDEN) --- libc/sysdeps/ia64/elf/configure.jj 2002-08-28 22:14:39.000000000 +0200 +++ libc/sysdeps/ia64/elf/configure 2002-08-28 22:14:55.000000000 +0200 @@ -0,0 +1,6 @@ + # Local configure fragment for sysdeps/ia64/elf. + +cat >> confdefs.h <<\EOF +#define PI_STATIC_AND_HIDDEN 1 +EOF + --- libc/sysdeps/alpha/elf/configure.in.jj 2002-06-04 21:02:43.000000000 +0200 +++ libc/sysdeps/alpha/elf/configure.in 2002-08-28 22:29:21.000000000 +0200 @@ -51,3 +51,29 @@ if test $libc_cv_alpha_tls = yes; then AC_DEFINE(HAVE_TLS_SUPPORT) fi fi + +AC_CACHE_CHECK(for GP relative module local relocs, libc_cv_alpha_hidden_gprel, [dnl +cat > conftest.c <<\EOF +static int bar; +int baz __attribute__((visibility("hidden"))); + +int foo (void) +{ + return bar + baz; +} +EOF +dnl + +libc_cv_alpha_hidden_gprel=no +if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS -O2 -fpic conftest.c 1>&AC_FD_CC); then + if grep -q 'bar.*!gprel' conftest.s \ + && grep -q 'baz.*!gprel' conftest.s \ + && ! grep -q 'bar.*!literal' conftest.s \ + && ! grep -q 'baz.*!literal' conftest.s; then + libc_cv_alpha_hidden_gprel=yes + fi +fi +rm -f conftest*]) +if test $libc_cv_alpha_hidden_gprel = yes; then + AC_DEFINE(PI_STATIC_AND_HIDDEN) +fi --- libc/sysdeps/alpha/elf/configure.jj 2002-06-05 10:55:48.000000000 +0200 +++ libc/sysdeps/alpha/elf/configure 2002-08-28 22:33:13.000000000 +0200 @@ -58,3 +58,38 @@ EOF fi fi + +echo $ac_n "checking for GP relative module local relocs""... $ac_c" 1>&6 +echo "configure:20: checking for GP relative module local relocs" >&5 +if eval "test \"`echo '$''{'libc_cv_alpha_hidden_gprel'+set}'`\" = set"; then + echo $ac_n "(cached) $ac_c" 1>&6 +else + cat > conftest.c <<\EOF +static int bar; +int baz __attribute__((visibility("hidden"))); + +int foo (void) +{ + return bar + baz; +} +EOF + +libc_cv_alpha_hidden_gprel=no +if { ac_try='${CC-cc} -S $CFLAGS -O2 -fpic conftest.c 1>&5'; { (eval echo configure:35: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + if grep -q 'bar.*!gprel' conftest.s \ + && grep -q 'baz.*!gprel' conftest.s \ + && ! grep -q 'bar.*!literal' conftest.s \ + && ! grep -q 'baz.*!literal' conftest.s; then + libc_cv_alpha_hidden_gprel=yes + fi +fi +rm -f conftest* +fi + +echo "$ac_t""$libc_cv_alpha_hidden_gprel" 1>&6 +if test $libc_cv_alpha_hidden_gprel = yes; then + cat >> confdefs.h <<\EOF +#define PI_STATIC_AND_HIDDEN 1 +EOF + +fi Jakub
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