bfe912a35c
As reported in the PR, GCC 10 (and also 9.3.1 but not 9.3.0) fails to build when using older binutils which lack LSE support, because those instructions are used in libgcc. Thanks to Kyrylo's hint, the following patches (hopefully) allow it to build even with older binutils by using .inst directive if LSE support isn't available in the assembler. 2020-04-22 Andre Vieira <andre.simoesdiasvieira@arm.com> Backport from mainline. 2020-04-15 Jakub Jelinek <jakub@redhat.com> PR target/93053 * configure.ac (LIBGCC_CHECK_AS_LSE): Add HAVE_AS_LSE checking. * config/aarch64/lse.S: Include auto-target.h, if HAVE_AS_LSE is not defined, use just .arch armv8-a. (B, M, N, OPN): Define. (COMMENT): New .macro. (CAS, CASP, SWP, LDOP): Use .inst directive if HAVE_AS_LSE is not defined. Otherwise, move the operands right after the glue? and comment out operands where the macros are used. * configure: Regenerated. * config.in: Regenerated.
664 lines
20 KiB
Plaintext
664 lines
20 KiB
Plaintext
dnl Process this file with autoconf to produce a configure script.
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sinclude(../config/enable.m4)
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sinclude(../config/tls.m4)
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sinclude(../config/acx.m4)
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sinclude(../config/no-executables.m4)
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sinclude(../config/lib-ld.m4)
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sinclude(../config/override.m4)
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sinclude(../config/picflag.m4)
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sinclude(../config/dfp.m4)
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sinclude(../config/unwind_ipinfo.m4)
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sinclude(../config/gthr.m4)
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sinclude(../config/sjlj.m4)
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sinclude(../config/cet.m4)
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AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
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AC_CONFIG_SRCDIR([static-object.mk])
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# The libgcc should not depend on any header files
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AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS],
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[m4_divert_text([DEFAULTS],
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[ac_includes_default='/* none */'])])
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AC_ARG_WITH(target-subdir,
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[ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
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AC_ARG_WITH(cross-host,
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[ --with-cross-host=HOST Configuring with a cross compiler])
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AC_ARG_WITH(ld,
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[ --with-ld arrange to use the specified ld (full pathname)])
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if test "${srcdir}" = "."; then
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if test -n "${with_build_subdir}"; then
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libgcc_topdir="${srcdir}/../.."
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with_target_subdir=
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elif test -z "${with_target_subdir}"; then
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libgcc_topdir="${srcdir}/.."
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else
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if test "${with_target_subdir}" != "."; then
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libgcc_topdir="${srcdir}/${with_multisrctop}../.."
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else
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libgcc_topdir="${srcdir}/${with_multisrctop}.."
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fi
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fi
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else
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libgcc_topdir="${srcdir}/.."
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fi
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AC_SUBST(libgcc_topdir)
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AC_CONFIG_AUX_DIR($libgcc_topdir)
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AC_CONFIG_HEADER(auto-target.h:config.in)
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AC_ARG_ENABLE(shared,
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[ --disable-shared don't provide a shared libgcc],
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[
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case $enable_shared in
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yes | no) ;;
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*)
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enable_shared=no
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
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for pkg in $enableval; do
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if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
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enable_shared=yes
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fi
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done
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IFS="$ac_save_ifs"
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;;
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esac
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], [enable_shared=yes])
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AC_SUBST(enable_shared)
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AC_ARG_ENABLE(gcov,
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[ --disable-gcov don't provide libgcov and related host tools],
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[], [enable_gcov=yes])
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AC_SUBST(enable_gcov)
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AC_ARG_ENABLE(vtable-verify,
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[ --enable-vtable-verify Enable vtable verification feature ],
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[case "$enableval" in
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yes) enable_vtable_verify=yes ;;
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no) enable_vtable_verify=no ;;
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*) enable_vtable_verify=no;;
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esac],
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[enable_vtable_verify=no])
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AC_SUBST(enable_vtable_verify)
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AC_ARG_WITH(aix-soname,
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[AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
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[shared library versioning (aka "SONAME") variant to provide on AIX])],
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[case "${host}:${enable_shared}" in
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power*-*-aix[[5-9]]*:yes)
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AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc])
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case ${withval} in
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aix|svr4|both) ;;
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*) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);;
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esac
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AC_MSG_RESULT($withval)
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;;
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*) with_aix_soname=aix ;;
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esac
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], [with_aix_soname=aix])
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AC_SUBST(with_aix_soname)
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GCC_PICFLAG
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AC_SUBST(PICFLAG)
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AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
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AC_ARG_ENABLE(version-specific-runtime-libs,
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[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
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[case "$enableval" in
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yes) version_specific_libs=yes ;;
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no) version_specific_libs=no ;;
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*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
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esac],
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[version_specific_libs=no])
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AC_MSG_RESULT($version_specific_libs)
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AC_ARG_WITH(slibdir,
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[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
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slibdir="$with_slibdir",
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if test "${version_specific_libs}" = yes; then
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slibdir='$(libsubdir)'
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elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
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slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
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else
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slibdir='$(libdir)'
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fi)
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AC_SUBST(slibdir)
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# Command-line options.
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# Very limited version of AC_MAINTAINER_MODE.
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AC_ARG_ENABLE([maintainer-mode],
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[AC_HELP_STRING([--enable-maintainer-mode],
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[enable make rules and dependencies not useful (and
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sometimes confusing) to the casual installer])],
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[case ${enable_maintainer_mode} in
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yes) MAINT='' ;;
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no) MAINT='#' ;;
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*) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
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esac
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maintainer_mode=${enableval}],
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[MAINT='#'])
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AC_SUBST([MAINT])dnl
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AC_PROG_INSTALL
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AC_PROG_AWK
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# We need awk; bail out if it's missing.
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case ${AWK} in
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"") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
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esac
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AC_CANONICAL_HOST
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ACX_NONCANONICAL_HOST
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ACX_NONCANONICAL_TARGET
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GCC_TOPLEV_SUBDIRS
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# Calculate toolexeclibdir
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# Also toolexecdir, though it's only used in toolexeclibdir
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case ${version_specific_libs} in
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yes)
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# Need the gcc compiler version to know where to install libraries
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# and header files if --enable-version-specific-runtime-libs option
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# is selected.
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toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
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toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
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;;
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no)
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if test -n "$with_cross_host" &&
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test x"$with_cross_host" != x"no"; then
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# Install a library built with a cross compiler in tooldir, not libdir.
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toolexecdir='$(exec_prefix)/$(target_noncanonical)'
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toolexeclibdir='$(toolexecdir)/lib'
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else
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toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
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toolexeclibdir='$(libdir)'
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fi
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multi_os_directory=`$CC -print-multi-os-directory`
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case $multi_os_directory in
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.) ;; # Avoid trailing /.
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*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
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esac
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;;
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esac
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AC_SUBST(toolexecdir)
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AC_SUBST(toolexeclibdir)
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dnl These must be called before AM_PROG_LIBTOOL, because it may want
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dnl to call AC_CHECK_PROG.
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AC_CHECK_TOOL(AR, ar)
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AC_CHECK_TOOL(LIPO, lipo, :)
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AC_CHECK_TOOL(NM, nm)
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AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_CHECK_TOOL(STRIP, strip, :)
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AC_PROG_LN_S
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GCC_NO_EXECUTABLES
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AC_PROG_CC
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AC_PROG_CPP_WERROR
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AC_SYS_LARGEFILE
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AC_CHECK_SIZEOF([double])
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AC_CHECK_SIZEOF([long double])
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AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
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AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8])
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AC_SUBST(double_type_size)
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AC_SUBST(long_double_type_size)
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AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \
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unistd.h sys/stat.h sys/types.h \
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string.h strings.h memory.h sys/auxv.h)
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AC_HEADER_STDC
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# Check for decimal float support.
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AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <fenv.h>
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]], [[
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_Decimal32 x;
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int fe_except =
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FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT;
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]])],
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[libgcc_cv_dfp=yes],
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[libgcc_cv_dfp=no])])
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decimal_float=$libgcc_cv_dfp
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AC_SUBST(decimal_float)
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GCC_AC_ENABLE_DECIMAL_FLOAT([$host])
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# Check for fixed-point support.
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AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])],
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[libgcc_cv_fixed_point=yes],
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[libgcc_cv_fixed_point=no])])
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fixed_point=$libgcc_cv_fixed_point
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AC_SUBST(fixed_point)
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# For platforms with the unwind ABI which includes an unwind library,
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# libunwind, we can choose to use the system libunwind.
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# config.gcc also contains tests of with_system_libunwind.
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GCC_CHECK_UNWIND_GETIPINFO
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# Check if the compiler is configured for setjmp/longjmp exceptions.
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GCC_CHECK_SJLJ_EXCEPTIONS
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GCC_CET_FLAGS(CET_FLAGS)
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AC_SUBST(CET_FLAGS)
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AC_ARG_ENABLE([explicit-exception-frame-registration],
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[AC_HELP_STRING([--enable-explicit-exception-frame-registration],
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[register exception tables explicitly at module start, for use
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e.g. for compatibility with installations without PT_GNU_EH_FRAME support])],
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[
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force_explicit_eh_registry=
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if test "$enable_explicit_exception_frame_registration" = yes; then
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if test $ac_cv_sjlj_exceptions = yes; then
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AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration
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with setjmp/longjmp exceptions])
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fi
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force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS
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fi
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])
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AC_SUBST([force_explicit_eh_registry])
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AC_LIB_PROG_LD_GNU
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AC_MSG_CHECKING([for thread model used by GCC])
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target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
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AC_MSG_RESULT([$target_thread_file])
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# Check for assembler CFI support.
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AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
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[AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE([asm("\n\
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.text\n\
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.cfi_startproc\n\
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.cfi_personality 0, symbol\n\
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.cfi_endproc");])],
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[libgcc_cv_cfi=yes],
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[libgcc_cv_cfi=no])])
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# Check 32bit or 64bit. In the case of MIPS, this really determines the
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# word size rather than the address size.
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cat > conftest.c <<EOF
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#if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \
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|| defined(__mips64)
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host_address=64
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#else
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host_address=32
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#endif
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EOF
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eval `${CC-cc} -E conftest.c | grep host_address=`
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rm -f conftest.c
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case ${host} in
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mips*-*-*)
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AC_CACHE_CHECK([whether the target is hard-float],
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[libgcc_cv_mips_hard_float],
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[AC_COMPILE_IFELSE(
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[AC_LANG_SOURCE([#ifndef __mips_hard_float
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#error FOO
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#endif
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])],
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[libgcc_cv_mips_hard_float=yes],
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[libgcc_cv_mips_hard_float=no])])
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esac
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case ${host} in
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*-*-solaris2*)
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# Check for system-provided CRTs on Solaris 11.4.
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AC_CACHE_CHECK([system-provided CRTs on Solaris],
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[libgcc_cv_solaris_crts],
|
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[libgcc_cv_solaris_crts=no
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libgcc_sysroot="`${CC} -print-sysroot`"
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libgcc_libdir="$libgcc_sysroot/usr/lib"
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# At the time they were added, gcrt1.o became a symlink for backwards
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# compatibility on x86, while crt1.o was added on sparc, so check for that.
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case ${host} in
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i?86-*-solaris2* | x86_64-*-solaris2*)
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if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi
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;;
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sparc*-*-solaris2*)
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if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi
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;;
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esac])
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if test $libgcc_cv_solaris_crts = yes; then
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AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
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[Define if the system-provided CRTs are present on Solaris.])
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fi
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;;
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esac
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# Determine the version of glibc, if any, used on the target.
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AC_MSG_CHECKING([for target glibc version])
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AC_ARG_WITH([glibc-version],
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[AS_HELP_STRING([--with-glibc-version=M.N],
|
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[assume GCC used with glibc version M.N or later])], [
|
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if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
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glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
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glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
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else
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AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
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fi], [
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AC_COMPUTE_INT([glibc_version_major], [__GLIBC__],
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[#include <features.h>],
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[glibc_version_major=0])
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AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__],
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[#include <features.h>],
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[glibc_version_minor=0])])
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AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
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# Determine floating-point type for powerpc*-*-linux*.
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# Single-precision-only FPRs are not a supported configuration for
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# this target, so are not allowed for in this test.
|
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case ${host} in
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powerpc*-*-linux*)
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cat > conftest.c <<EOF
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#ifdef __powerpc64__
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ppc_fp_type=64
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#elif defined _SOFT_FLOAT
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ppc_fp_type=soft
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#elif defined _SOFT_DOUBLE
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ppc_fp_type=e500v1
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#elif defined __NO_FPRS__
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ppc_fp_type=e500v2
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#else
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ppc_fp_type=hard
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#endif
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EOF
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eval `${CC-cc} -E conftest.c | grep ppc_fp_type=`
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rm -f conftest.c
|
|
# glibc 2.19 and later provide all the soft-fp functions, with proper
|
|
# interactions with <fenv.h> exception and rounding mode handling, so
|
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# make libgcc's versions into compat symbols if a recent enough glibc
|
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# version is being used.
|
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ppc_fp_compat=
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case ${ppc_fp_type} in
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soft|e500v1|e500v2)
|
|
if test $glibc_version_major -gt 2 \
|
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|| ( test $glibc_version_major -eq 2 \
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&& test $glibc_version_minor -ge 19 ); then
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ppc_fp_compat="t-softfp-compat"
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fi
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
|
|
case ${host} in
|
|
# At present, we cannot turn -mfloat128 on via #pragma GCC target, so just
|
|
# check if we have VSX (ISA 2.06) support to build the software libraries, and
|
|
# whether the assembler can handle xsaddqp for hardware support. Also check if
|
|
# a new glibc is being used so that __builtin_cpu_supports can be used.
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|
powerpc*-*-linux*)
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saved_CFLAGS="$CFLAGS"
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|
CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
|
|
AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
|
|
[libgcc_cv_powerpc_float128],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])],
|
|
[libgcc_cv_powerpc_float128=yes],
|
|
[libgcc_cv_powerpc_float128=no])])
|
|
|
|
CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
|
|
AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries],
|
|
[libgcc_cv_powerpc_float128_hw],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE([#include <sys/auxv.h>
|
|
#ifndef AT_PLATFORM
|
|
#error "AT_PLATFORM is not defined"
|
|
#endif
|
|
#ifndef __BUILTIN_CPU_SUPPORTS__
|
|
#error "__builtin_cpu_supports is not available"
|
|
#endif
|
|
vector unsigned char add (vector unsigned char a, vector unsigned char b)
|
|
{
|
|
vector unsigned char ret;
|
|
__asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
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|
return ret;
|
|
}
|
|
void *add_resolver (void) { return (void *) add; }
|
|
__float128 add_ifunc (__float128, __float128)
|
|
__attribute__ ((__ifunc__ ("add_resolver")));])],
|
|
[libgcc_cv_powerpc_float128_hw=yes],
|
|
[libgcc_cv_powerpc_float128_hw=no])])
|
|
CFLAGS="$saved_CFLAGS"
|
|
esac
|
|
|
|
# Collect host-machine-specific information.
|
|
. ${srcdir}/config.host
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|
|
|
# Used for constructing correct paths for offload compilers.
|
|
accel_dir_suffix=
|
|
real_host_noncanonical=${host_noncanonical}
|
|
if test x"$enable_as_accelerator_for" != x; then
|
|
accel_dir_suffix=/accel/${target_noncanonical}
|
|
real_host_noncanonical=${enable_as_accelerator_for}
|
|
fi
|
|
AC_SUBST(accel_dir_suffix)
|
|
AC_SUBST(real_host_noncanonical)
|
|
|
|
if test x"$enable_offload_targets" != x; then
|
|
extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o"
|
|
fi
|
|
|
|
# Check if Solaris/x86 linker supports ZERO terminator unwind entries.
|
|
# This is after config.host so we can augment tmake_file.
|
|
# Link with -nostartfiles -nodefaultlibs since neither are present while
|
|
# building libgcc.
|
|
case ${host} in
|
|
i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
|
|
cat > conftest.s <<EOF
|
|
.section .eh_frame,"a",@unwind
|
|
.zero 4
|
|
.section .jcr,"aw",@progbits
|
|
.zero 8
|
|
EOF
|
|
if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
tmake_file="${tmake_file} i386/t-crtstuff"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Check if Solaris linker support v2 linker mapfile syntax.
|
|
# Link with -nostartfiles -nodefaultlibs since neither are present while
|
|
# building libgcc.
|
|
case ${host} in
|
|
*-*-solaris2*)
|
|
solaris_ld_v2_maps=no
|
|
echo 'int main(void) {return 0;}' > conftest.c
|
|
echo '$mapfile_version 2' > conftest.map
|
|
if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
|
|
solaris_ld_v2_maps=yes
|
|
fi
|
|
;;
|
|
esac
|
|
AC_SUBST(solaris_ld_v2_maps)
|
|
|
|
# Check if xtensa target is configured for windowed ABI and thus needs to use
|
|
# custom unwind code.
|
|
# This is after config.host so we can augment tmake_file.
|
|
case ${host} in
|
|
xtensa*-*)
|
|
cat > conftest.c <<EOF
|
|
#ifdef __XTENSA_CALL0_ABI__
|
|
#error
|
|
#endif
|
|
EOF
|
|
if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then
|
|
tmake_file="${tmake_file} xtensa/t-windowed"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Check for visibility support. This is after config.host so that
|
|
# we can check for asm_hidden_op.
|
|
AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
|
|
libgcc_cv_hidden_visibility_attribute, [
|
|
echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
|
|
libgcc_cv_hidden_visibility_attribute=no
|
|
if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then
|
|
libgcc_cv_hidden_visibility_attribute=yes
|
|
fi
|
|
fi
|
|
rm -f conftest.*
|
|
])
|
|
|
|
if test $libgcc_cv_hidden_visibility_attribute = yes; then
|
|
vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'
|
|
AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.])
|
|
else
|
|
vis_hide=
|
|
fi
|
|
AC_SUBST(vis_hide)
|
|
|
|
# Check for .cfi_sections .debug_frame support.
|
|
AC_CACHE_CHECK([for .cfi_sections .debug_frame],
|
|
libgcc_cv_cfi_sections_directive, [
|
|
echo 'int foo (int, char *);' > conftest.c
|
|
echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c
|
|
libgcc_cv_cfi_sections_directive=no
|
|
if AC_TRY_COMMAND(${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then
|
|
libgcc_cv_cfi_sections_directive=yes
|
|
fi
|
|
fi
|
|
rm -f conftest.*
|
|
])
|
|
if test $libgcc_cv_cfi_sections_directive = yes; then
|
|
AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.])
|
|
fi
|
|
|
|
# See if we have thread-local storage. We can only test assembler
|
|
# since link-time and run-time tests require the newly built
|
|
# gcc, which can't be used to build executable due to that libgcc
|
|
# is yet to be built here.
|
|
GCC_CHECK_CC_TLS
|
|
set_have_cc_tls=
|
|
if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
|
|
set_have_cc_tls="-DHAVE_CC_TLS"
|
|
fi
|
|
AC_SUBST(set_have_cc_tls)
|
|
|
|
# See if we have emulated thread-local storage.
|
|
GCC_CHECK_EMUTLS
|
|
set_use_emutls=
|
|
if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then
|
|
set_use_emutls="-DUSE_EMUTLS"
|
|
fi
|
|
AC_SUBST(set_use_emutls)
|
|
|
|
dnl Check if as supports AVX instructions.
|
|
AC_DEFUN([LIBGCC_CHECK_AS_AVX], [
|
|
case "${target}" in
|
|
i[[34567]]86-*-* | x86_64-*-*)
|
|
AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [
|
|
AC_TRY_COMPILE([], [asm("vzeroupper");],
|
|
[libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no])
|
|
])
|
|
if test x$libgcc_cv_as_avx = xyes; then
|
|
AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.])
|
|
fi
|
|
;;
|
|
esac])
|
|
LIBGCC_CHECK_AS_AVX
|
|
|
|
dnl Check if as supports LSE instructions.
|
|
AC_DEFUN([LIBGCC_CHECK_AS_LSE], [
|
|
case "${target}" in
|
|
aarch64*-*-*)
|
|
AC_CACHE_CHECK([if the assembler supports LSE], libgcc_cv_as_lse, [
|
|
AC_TRY_COMPILE([],
|
|
changequote(,)dnl
|
|
asm(".arch armv8-a+lse\n\tcas w0, w1, [x2]");
|
|
changequote([,])dnl
|
|
,
|
|
[libgcc_cv_as_lse=yes], [libgcc_cv_as_lse=no])
|
|
])
|
|
if test x$libgcc_cv_as_lse = xyes; then
|
|
AC_DEFINE(HAVE_AS_LSE, 1, [Define to 1 if the assembler supports LSE.])
|
|
fi
|
|
;;
|
|
esac])
|
|
LIBGCC_CHECK_AS_LSE
|
|
|
|
dnl Check if as supports RTM instructions.
|
|
AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
|
|
[[void ip (void) __attribute__ ((constructor (1)));]])],
|
|
[libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])])
|
|
if test $libgcc_cv_init_priority = yes; then
|
|
AC_DEFINE(HAVE_INIT_PRIORITY, 1,
|
|
[Define if the compiler supports init priority.])
|
|
fi
|
|
|
|
# Conditionalize the sfp-machine.h header for this target machine.
|
|
if test -z "${sfp_machine_header}"; then
|
|
sfp_machine_header=$cpu_type/sfp-machine.h
|
|
if test -f ${srcdir}/config/${sfp_machine_header}; then
|
|
:
|
|
else
|
|
sfp_machine_header=no-sfp-machine.h
|
|
fi
|
|
fi
|
|
AC_SUBST(sfp_machine_header)
|
|
|
|
# Conditionalize the makefile for this target machine.
|
|
tmake_file_=
|
|
for f in ${tmake_file}
|
|
do
|
|
if test -f ${srcdir}/config/$f
|
|
then
|
|
tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
|
|
fi
|
|
done
|
|
tmake_file="${tmake_file_}"
|
|
AC_SUBST(tmake_file)
|
|
|
|
# Likewise export definitions for libgcc_tm.h
|
|
tm_file_=
|
|
for f in ${tm_file}
|
|
do
|
|
tm_file_="${tm_file_} \$(srcdir)/config/$f"
|
|
done
|
|
tm_file="${tm_file_}"
|
|
AC_SUBST(tm_file)
|
|
AC_SUBST(tm_defines)
|
|
|
|
# Map from thread model to thread header.
|
|
GCC_AC_THREAD_HEADER([$target_thread_file])
|
|
|
|
# Determine what GCC version number to use in filesystem paths.
|
|
GCC_BASE_VER
|
|
|
|
# Substitute configuration variables
|
|
AC_SUBST(cpu_type)
|
|
AC_SUBST(extra_parts)
|
|
AC_SUBST(asm_hidden_op)
|
|
AC_SUBST(enable_execute_stack)
|
|
AC_SUBST(unwind_header)
|
|
AC_SUBST(md_unwind_header)
|
|
AC_SUBST(sfp_machine_header)
|
|
AC_SUBST(thread_header)
|
|
|
|
# We need multilib support.
|
|
AC_CONFIG_FILES([Makefile])
|
|
AC_CONFIG_COMMANDS([default],
|
|
[[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
|
|
if test -n "$CONFIG_FILES"; then
|
|
# FIXME: We shouldn't need to set ac_file
|
|
ac_file=Makefile
|
|
. ${libgcc_topdir}/config-ml.in
|
|
fi]],
|
|
[[srcdir=${srcdir}
|
|
host=${host}
|
|
with_target_subdir=${with_target_subdir}
|
|
with_multisubdir=${with_multisubdir}
|
|
ac_configure_args="--enable-multilib ${ac_configure_args}"
|
|
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
|
|
libgcc_topdir=${libgcc_topdir}
|
|
CC="${CC}"
|
|
]])
|
|
AC_OUTPUT
|