ff5dfc4869
PR bootstrap/44432 * configure.ac: Before using ZW_PROG_COMPILER_DEPENDENCIES for C++, check that C++ compiler works. * configure: Regenerate. From-SVN: r160460
189 lines
5.0 KiB
Plaintext
189 lines
5.0 KiB
Plaintext
# -*- Autoconf -*-
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# Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.64)
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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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# See if we are building gcc with C++.
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# Do this early so setting lang to C++ affects following tests
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AC_ARG_ENABLE(build-with-cxx,
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[ --enable-build-with-cxx build with C++ compiler instead of C compiler],
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ENABLE_BUILD_WITH_CXX=$enableval,
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ENABLE_BUILD_WITH_CXX=no)
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AC_SUBST(ENABLE_BUILD_WITH_CXX)
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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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# 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 -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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# 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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if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
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ZW_PROG_COMPILER_DEPENDENCIES([CC])
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else
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AC_LANG_PUSH([C++])
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AC_COMPILE_IFELSE([[int i;]], [],
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[AC_MSG_ERROR([C++ compiler missing or inoperational])])
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AC_LANG_POP([C++])
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ZW_PROG_COMPILER_DEPENDENCIES([CXX])
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fi
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# Checks for header files.
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AC_HEADER_TIME
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ACX_HEADER_STRING
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# AC_CHECK_HEADERS is repeated to work around apparent autoconf 2.59 bug. If
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# AC_CHECK_HEADERS comes after the if clause, the last AC_LANG call gets used,
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# no matter which branch is taken.
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if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
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AC_LANG(C)
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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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else
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AC_LANG(C++)
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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/stat.h sys/file.h unistd.h)
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fi
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# Checks for typedefs, structures, and compiler characteristics.
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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_CHECK_TYPE(ssize_t, int)
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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 $ac_cv_type_uchar = yes; then
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AC_DEFINE(HAVE_UCHAR, 1,
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[Define if <sys/types.h> defines \`uchar'.])
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fi
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AM_ICONV
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# More defines and substitutions.
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PACKAGE="$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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AC_ARG_ENABLE(checking,
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[ --enable-checking enable expensive run-time checks],,
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enable_checking=no)
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if test $enable_checking != no ; then
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AC_DEFINE(ENABLE_CHECKING, 1,
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[Define if you want more run-time sanity checks.])
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fi
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m4_changequote(,)
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case $target in
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alpha*-*-* | \
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arm*-*-*eabi* | \
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arm*-*-symbianelf* | \
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x86_64-*-* | \
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ia64-*-* | \
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hppa*64*-*-* | \
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i[34567]86-*-darwin* | \
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i[34567]86-*-solaris2.1[0-9]* | \
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i[34567]86-w64-mingw* | \
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mips*-*-* | \
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mmix-*-* | \
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powerpc*-*-* | \
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rs6000*-*-* | \
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s390*-*-* | \
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sparc*-*-* | \
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spu-*-* | \
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sh[123456789lbe]*-*-* | sh-*-*)
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need_64bit_hwint=yes ;;
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i[34567]86-*-linux*)
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if test "x$enable_targets" = xall; then
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need_64bit_hwint=yes
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else
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need_64bit_hwint=no
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fi
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;;
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*)
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need_64bit_hwint=no ;;
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esac
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case $need_64bit_hwint:$ac_cv_sizeof_long in
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*:8 | no:*) host_wide_int=long ;;
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*) host_wide_int='long long' ;;
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esac
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m4_changequote([,])
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AC_DEFINE_UNQUOTED(HOST_WIDE_INT, $host_wide_int,
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[Define to the widest efficient host integer type at least
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as wide as the target's size_t type.])
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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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