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20a5b48249
Since the characters we are searching for (CR, LF, '\', '?') all have distinct ASCII codes mod 16, PSHUFB can help match them all at once. Directly use the new helper if __SSSE3__ is defined. It makes the other helpers unused, so mark them inline to prevent warnings. Rewrite and simplify init_vectorized_lexer. libcpp/ChangeLog: * config.in: Regenerate. * configure: Regenerate. * configure.ac: Check for SSSE3 instead of SSE4.2. * files.cc (read_file_guts): Bump padding to 64 if HAVE_SSSE3. * lex.cc (search_line_acc_char): Mark inline, not "unused". (search_line_sse2): Mark inline. (search_line_sse42): Replace with... (search_line_ssse3): ... this new function. Adjust the use... (init_vectorized_lexer): ... here. Simplify.
254 lines
6.8 KiB
Plaintext
254 lines
6.8 KiB
Plaintext
# -*- Autoconf -*-
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# Process this file with autoconf to produce a configure script.
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AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
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AC_CONFIG_SRCDIR(ucnid.h)
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AC_CONFIG_MACRO_DIR(../config)
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AC_CANONICAL_SYSTEM
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# Checks for programs.
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AC_PROG_MAKE_SET
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AC_PROG_INSTALL
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AC_PROG_CC
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AC_PROG_CXX
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AC_PROG_RANLIB
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AC_CHECK_TOOL(AR, ar)
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AC_USE_SYSTEM_EXTENSIONS
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AC_SYS_LARGEFILE
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MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
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AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
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AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
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AC_CHECK_PROGS([AUTOHEADER], [autoheader], [$MISSING autoheader])
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if test -z "$ETAGS"; then
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ETAGS=etags
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fi
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AC_SUBST([ETAGS])
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# Figure out what compiler warnings we can enable.
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# See config/warnings.m4 for details.
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ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wno-narrowing -Wwrite-strings \
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-Wmissing-format-attribute], [warn])
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ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
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-Wold-style-definition -Wc++-compat], [c_warn])
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ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
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# Disable exceptions and RTTI if building with g++
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ACX_PROG_CC_WARNING_OPTS(
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m4_quote(m4_do([-fno-exceptions -fno-rtti])), [noexception_flags])
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# Only enable with --enable-werror-always until existing warnings are
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# corrected.
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ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
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# Dependency checking.
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ZW_CREATE_DEPDIR
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AC_LANG_PUSH([C++])
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [],
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[AC_MSG_ERROR([C++ compiler missing or inoperational])])
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AC_LANG_POP([C++])
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ZW_PROG_COMPILER_DEPENDENCIES([CXX])
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# Checks for header files.
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AC_HEADER_TIME
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ACX_HEADER_STRING
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AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
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stdlib.h strings.h string.h sys/file.h unistd.h)
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# Checks for typedefs, structures, and compiler characteristics.
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AC_C_BIGENDIAN
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AC_C_CONST
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AC_C_INLINE
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AC_FUNC_OBSTACK
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AC_TYPE_OFF_T
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AC_TYPE_SIZE_T
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AC_TYPE_SSIZE_T
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AC_TYPE_UINTPTR_T
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AC_CHECK_TYPE(ptrdiff_t, int)
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AC_TYPE_UINT64_T
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if test x"$ac_cv_c_uint64_t" = x"no"; then
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AC_MSG_ERROR([uint64_t not found])
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fi
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AC_STRUCT_TM
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AC_CHECK_SIZEOF(int)
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AC_CHECK_SIZEOF(long)
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define(libcpp_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
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ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
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fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
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fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
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putchar_unlocked putc_unlocked)
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AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
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AC_CHECK_DECLS([abort, asprintf, basename(char *), errno, getopt, vasprintf])
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AC_CHECK_DECLS(m4_split(m4_normalize(libcpp_UNLOCKED_FUNCS)))
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# Checks for library functions.
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AC_FUNC_ALLOCA
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AC_HEADER_STDC
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AM_LANGINFO_CODESET
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ZW_GNU_GETTEXT_SISTER_DIR
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AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
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[AC_TRY_COMPILE([
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#include <sys/types.h>
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],
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[if ((uchar *)0) return 0;
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if (sizeof(uchar)) return 0;],
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ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
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if test $ac_cv_type_uchar = yes; then
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AC_DEFINE(HAVE_UCHAR, 1,
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[Define if <sys/types.h> defines \`uchar'.])
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fi
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AC_CHECK_SIZEOF(ino_t)
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AC_CHECK_SIZEOF(dev_t)
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# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
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# iconv() prototype.
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AC_LANG_PUSH([C++])
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AM_ICONV
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AC_LANG_POP([C++])
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# More defines and substitutions.
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PACKAGE="$PACKAGE_TARNAME"
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AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Define to the name of this package.])
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AC_SUBST(PACKAGE)
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if test "x$enable_nls" != xno; then
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USED_CATALOGS='$(CATALOGS)'
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else
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USED_CATALOGS=
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fi
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AC_SUBST(USED_CATALOGS)
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AC_ARG_ENABLE(maintainer-mode,
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[ --enable-maintainer-mode enable rules only needed by maintainers],,
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enable_maintainer_mode=no)
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if test "x$enable_maintainer_mode" = xno; then
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MAINT='#'
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else
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MAINT=
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fi
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AC_SUBST(MAINT)
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# Enable expensive internal checks
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is_release=
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if test -f $srcdir/../gcc/DEV-PHASE \
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&& test x"`cat $srcdir/../gcc/DEV-PHASE`" != xexperimental; then
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is_release=yes
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fi
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AC_ARG_ENABLE(checking,
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[AS_HELP_STRING([[--enable-checking[=LIST]]],
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[enable expensive run-time checks. With LIST,
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enable only specific categories of checks.
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Categories are: yes,no,all,none,release.
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Flags are: misc,valgrind or other strings])],
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[ac_checking_flags="${enableval}"],[
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# Determine the default checks.
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if test x$is_release = x ; then
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ac_checking_flags=yes
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else
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ac_checking_flags=release
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fi])
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IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
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for check in release $ac_checking_flags
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do
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case $check in
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# these set all the flags to specific states
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yes|all) ac_checking=1 ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
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no|none) ac_checking= ; ac_assert_checking= ; ac_valgrind_checking= ;;
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release) ac_checking= ; ac_assert_checking=1 ; ac_valgrind_checking= ;;
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# these enable particular checks
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assert) ac_assert_checking=1 ;;
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misc) ac_checking=1 ;;
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valgrind) ac_valgrind_checking=1 ;;
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# accept
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*) ;;
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esac
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done
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IFS="$ac_save_IFS"
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if test x$ac_checking != x ; then
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AC_DEFINE(CHECKING_P, 1,
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[Define to 1 if you want more run-time sanity checks.])
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else
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AC_DEFINE(CHECKING_P, 0)
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fi
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if test x$ac_assert_checking != x ; then
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AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
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[Define if you want assertions enabled. This is a cheap check.])
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fi
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AC_ARG_ENABLE(canonical-system-headers,
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[ --enable-canonical-system-headers
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enable or disable system headers canonicalization],
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[],
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enable_canonical_system_headers=yes)
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if test $enable_canonical_system_headers != no; then
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AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
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1, [Define to enable system headers canonicalization.])
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fi
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case $target in
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i?86-* | x86_64-*)
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AC_TRY_COMPILE([], [asm ("pshufb %xmm0, %xmm1")],
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[AC_DEFINE([HAVE_SSSE3], [1],
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[Define to 1 if you can assemble SSSE3 insns.])])
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esac
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# Enable --enable-host-shared.
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AC_ARG_ENABLE(host-shared,
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[AS_HELP_STRING([--enable-host-shared],
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[build host code as shared libraries])])
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AC_SUBST(enable_host_shared)
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# Enable --enable-host-pie.
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AC_ARG_ENABLE(host-pie,
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[AS_HELP_STRING([--enable-host-pie],
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[build host code as PIE])])
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AC_SUBST(enable_host_pie)
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if test x$enable_host_shared = xyes; then
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PICFLAG=-fPIC
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elif test x$enable_host_pie = xyes; then
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PICFLAG=-fPIE
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else
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PICFLAG=
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fi
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AC_SUBST(PICFLAG)
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# Enable Intel CET on Intel CET enabled host if jit is enabled.
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GCC_CET_HOST_FLAGS(CET_HOST_FLAGS)
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case x$enable_languages in
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*jit*)
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;;
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*)
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CET_HOST_FLAGS=
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;;
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esac
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AC_SUBST(CET_HOST_FLAGS)
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AC_ARG_ENABLE(valgrind-annotations,
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[AS_HELP_STRING([--enable-valgrind-annotations],
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[enable valgrind runtime interaction])], [],
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[enable_valgrind_annotations=no])
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if test x$enable_valgrind_annotations != xno \
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|| test x$ac_valgrind_checking != x; then
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AC_DEFINE(ENABLE_VALGRIND_WORKAROUNDS, 1,
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[Define if you want to workaround Valgrind warnings about
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possible memory leaks because of libcpp use of interior pointers.])
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fi
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# Output.
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AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])
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AC_CONFIG_FILES(Makefile)
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AC_OUTPUT
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