GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/s390/elf. if test "$usetls" != no; then # Check for support of thread-local storage handling in assembler and # linker. AC_CACHE_CHECK(for s390 TLS support, libc_cv_390_tls, [dnl cat > conftest.S <<\EOF .section ".tdata", "awT", @progbits foo: .long 25 .text .quad foo@TLSGD .quad foo@TLSLDM .quad foo@DTPOFF .quad foo@NTPOFF .quad foo@GOTNTPOFF .quad foo@INDNTPOFF lg %r1,foo@GOTNTPOFF(%r12) lg %r1,0(%r1):tls_load:foo brasl %r14,__tls_get_offset@plt:tls_gdcall:foo brasl %r14,__tls_get_offset@plt:tls_ldcall:foo EOF dnl if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS conftest.S 1>&AS_MESSAGE_LOG_FD); then libc_cv_390_tls=yes else libc_cv_390_tls=no fi rm -f conftest*]) if test $libc_cv_390_tls = yes; then AC_DEFINE(HAVE_TLS_SUPPORT) fi fi dnl It is always possible to access static and hidden symbols in an dnl position independent way. AC_DEFINE(PI_STATIC_AND_HIDDEN)