39be73d07b
This patch changes the build machinery in order to disable the build of GCOV (both compiler and libgcc) in bpf-*-* targets. The reason for this change is that BPF is (currently) too restricted in order to support the coverage instrumentalization. Tested in bpf-unknown-none and x86_64-linux-gnu targets. 2022-02-23 Jose E. Marchesi <jose.marchesi@oracle.com> gcc/ChangeLog PR target/104656 * configure.ac: --disable-gcov if targetting bpf-*. * configure: Regenerate. libgcc/ChangeLog PR target/104656 * configure.ac: --disable-gcov if targetting bpf-*. * configure: Regenerate.
729 lines
22 KiB
Plaintext
729 lines
22 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/toolexeclibdir.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(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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GCC_WITH_TOOLEXECLIBDIR
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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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case ${with_toolexeclibdir} in
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no)
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slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
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;;
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*)
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slibdir=${with_toolexeclibdir}
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;;
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esac
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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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AC_ARG_ENABLE(gcov,
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[ --disable-gcov don't provide libgcov and related host tools],
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[], [case $target in
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bpf-*-*)
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enable_gcov=no
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;;
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*)
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enable_gcov=yes
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;;
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esac])
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AC_SUBST(enable_gcov)
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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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case ${with_toolexeclibdir} in
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no)
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toolexeclibdir='$(toolexecdir)/lib'
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;;
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*)
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toolexeclibdir=${with_toolexeclibdir}
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;;
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esac
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else
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toolexecdir='$(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], [$ac_cv_sizeof_long_double \* 8])
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AC_SUBST(double_type_size)
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AC_SUBST(long_double_type_size)
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AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \
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unistd.h sys/stat.h sys/types.h \
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string.h strings.h memory.h sys/auxv.h sys/mman.h)
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AC_HEADER_STDC
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# Check for decimal float support.
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AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <fenv.h>
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]], [[
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_Decimal32 x;
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int fe_except =
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FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT;
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]])],
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[libgcc_cv_dfp=yes],
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[libgcc_cv_dfp=no])])
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decimal_float=$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 $ac_cv_sjlj_exceptions = yes; then
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AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration
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with setjmp/longjmp exceptions])
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fi
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force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS
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fi
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])
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AC_SUBST([force_explicit_eh_registry])
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AC_ARG_ENABLE([tm-clone-registry],
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[ --disable-tm-clone-registry disable TM clone registry],
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[
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use_tm_clone_registry=
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if test "$enable_tm_clone_registry" = no; then
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use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
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fi
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],
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[
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use_tm_clone_registry=
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case $target in
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msp430*elfbare)
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use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
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;;
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esac
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])
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AC_SUBST([use_tm_clone_registry])
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AC_LIB_PROG_LD_GNU
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AC_MSG_CHECKING([for thread model used by GCC])
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target_thread_file=`$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* or vxworks7*.
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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 ${host} in
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powerpc*-*-linux* | powerpc*-*-vxworks7*)
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cat > conftest.c <<EOF
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#ifdef __powerpc64__
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ppc_fp_type=64
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#elif defined _SOFT_FLOAT
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ppc_fp_type=soft
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|
#elif defined _SOFT_DOUBLE
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ppc_fp_type=e500v1
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|
#elif defined __NO_FPRS__
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ppc_fp_type=e500v2
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|
#else
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ppc_fp_type=hard
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#endif
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EOF
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eval `${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
|
|
# version is being used.
|
|
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
|
|
ppc_fp_compat="t-softfp-compat"
|
|
fi
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|
;;
|
|
esac
|
|
;;
|
|
esac
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|
|
case ${host} in
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# At present, we cannot turn -mfloat128 on via #pragma GCC target, so just
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|
# check if we have VSX (ISA 2.06) support to build the software libraries, and
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|
# whether the assembler can handle xsaddqp for hardware support. Also check if
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|
# a new glibc is being used so that __builtin_cpu_supports can be used.
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|
powerpc*-*-linux*)
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|
saved_CFLAGS="$CFLAGS"
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|
CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
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|
AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
|
|
[libgcc_cv_powerpc_float128],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])],
|
|
[libgcc_cv_powerpc_float128=yes],
|
|
[libgcc_cv_powerpc_float128=no])])
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|
|
|
CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
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|
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));
|
|
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="$saved_CFLAGS"
|
|
|
|
saved_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -mcpu=power10 -mfloat128-hardware"
|
|
AC_CACHE_CHECK([for PowerPC ISA 3.1 to build hardware __float128 libraries],
|
|
[libgcc_cv_powerpc_3_1_float128_hw],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_SOURCE([#include <sys/auxv.h>
|
|
#ifndef AT_PLATFORM
|
|
#error "AT_PLATFORM is not defined"
|
|
#endif
|
|
#ifndef __BUILTIN_CPU_SUPPORTS__
|
|
#error "__builtin_cpu_supports is not available"
|
|
#endif
|
|
vector unsigned char conv (vector unsigned char qs)
|
|
{
|
|
vector unsigned char ret;
|
|
__asm__ ("xscvsqqp %0,%1" : "=v" (ret) : "v" (qs));
|
|
return ret;
|
|
}
|
|
void *conv_resolver (void) { return (void *) conv; }
|
|
__float128 conv_ifunc (__float128)
|
|
__attribute__ ((__ifunc__ ("conv_resolver")));])],
|
|
[libgcc_cv_powerpc_3_1_float128_hw=yes],
|
|
[libgcc_cv_powerpc_3_1_float128_hw=no])])
|
|
CFLAGS="$saved_CFLAGS"
|
|
esac
|
|
|
|
# Collect host-machine-specific information.
|
|
. ${srcdir}/config.host
|
|
|
|
# Used for constructing correct paths for offload compilers.
|
|
accel_dir_suffix=
|
|
real_host_noncanonical=${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 ${host} in
|
|
i?86-*-solaris2* | x86_64-*-solaris2*)
|
|
cat > conftest.s <<EOF
|
|
.section .eh_frame,"a",@unwind
|
|
.zero 4
|
|
.section .jcr,"aw",@progbits
|
|
.zero 8
|
|
EOF
|
|
if AC_TRY_COMMAND(${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 ${host} in
|
|
xtensa*-*)
|
|
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
|
|
[#ifdef __XTENSA_CALL0_ABI__
|
|
#error
|
|
#endif
|
|
])],
|
|
[tmake_file="${tmake_file} xtensa/t-windowed"])
|
|
;;
|
|
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
|