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