# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
AC_INIT(cpplib, [ ], gcc-bugs@gcc.gnu.org, cpplib)
AC_CONFIG_SRCDIR(ucnid.h)
AC_CONFIG_MACRO_DIR(../config)
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_PROG_CC
+AC_PROG_CXX
AC_PROG_RANLIB
+# See if we are building gcc with C++.
+# Do this early so setting lang to C++ affects following tests
+AC_ARG_ENABLE(build-with-cxx,
+[ --enable-build-with-cxx build with C++ compiler instead of C compiler],
+ENABLE_BUILD_WITH_CXX=$enableval,
+ENABLE_BUILD_WITH_CXX=no)
+AC_SUBST(ENABLE_BUILD_WITH_CXX)
+
MISSING=`cd $ac_aux_dir && ${PWDCMD-pwd}`/missing
AC_CHECK_PROGS([ACLOCAL], [aclocal], [$MISSING aclocal])
AC_CHECK_PROGS([AUTOCONF], [autoconf], [$MISSING autoconf])
# Figure out what compiler warnings we can enable.
# See config/warnings.m4 for details.
-ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
- -Wmissing-prototypes -Wold-style-definition])
+ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings \
+ -Wmissing-format-attribute], [warn])
+ACX_PROG_CC_WARNING_OPTS([-Wstrict-prototypes -Wmissing-prototypes \
+ -Wold-style-definition -Wc++-compat], [c_warn])
ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([-Wno-long-long])
# Only enable with --enable-werror-always until existing warnings are
# corrected.
ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual])
+# Dependency checking.
+ZW_CREATE_DEPDIR
+if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
+ZW_PROG_COMPILER_DEPENDENCIES([CC])
+else
+ZW_PROG_COMPILER_DEPENDENCIES([CXX])
+fi
+
# Checks for header files.
AC_HEADER_TIME
ACX_HEADER_STRING
-AC_CHECK_HEADERS(iconv.h locale.h fcntl.h limits.h stddef.h \
+
+# AC_CHECK_HEADERS is repeated to work around apparent autoconf 2.59 bug. If
+# AC_CHECK_HEADERS comes after the if clause, the last AC_LANG call gets used,
+# no matter which branch is taken.
+if test "$ENABLE_BUILD_WITH_CXX" = "no"; then
+ AC_LANG(C)
+ AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
stdlib.h strings.h string.h sys/file.h unistd.h)
+else
+ AC_LANG(C++)
+ AC_CHECK_HEADERS(locale.h fcntl.h limits.h stddef.h \
+ stdlib.h strings.h string.h sys/stat.h sys/file.h unistd.h)
+fi
# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_FUNC_OBSTACK
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
+AC_CHECK_TYPE(ssize_t, int)
AC_STRUCT_TM
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
putchar_unlocked putc_unlocked)
AC_CHECK_FUNCS(libcpp_UNLOCKED_FUNCS)
-AC_CHECK_DECLS(m4_split(m4_normalize(abort basename errno getopt libcpp_UNLOCKED_FUNCS)))
+AC_CHECK_DECLS(m4_split(m4_normalize(abort asprintf basename errno getopt \
+ libcpp_UNLOCKED_FUNCS vasprintf)))
# Checks for library functions.
AC_FUNC_ALLOCA
m4_changequote(,)
case $target in
alpha*-*-* | \
- arm*-*-eabi* | \
+ arm*-*-*eabi* | \
arm*-*-symbianelf* | \
x86_64-*-* | \
ia64-*-* | \
- hppa*64*-*-* | parisc*64*-*-* | \
+ hppa*64*-*-* | \
+ i[34567]86-*-darwin* | \
i[34567]86-*-solaris2.1[0-9]* | \
+ i[34567]86-w64-mingw* | \
mips*-*-* | \
mmix-*-* | \
powerpc*-*-* | \
rs6000*-*-* | \
s390*-*-* | \
- sparc64*-*-* | ultrasparc-*-freebsd* | \
- sparcv9-*-solaris2* | \
- sparc-*-solaris2.[789] | sparc-*-solaris2.1[0-9]* | \
- sh[123456789l]*-*-*)
+ sparc*-*-* | \
+ spu-*-* | \
+ sh[123456789lbe]*-*-* | sh-*-*)
need_64bit_hwint=yes ;;
+ i[34567]86-*-linux*)
+ if test "x$enable_targets" = xall; then
+ need_64bit_hwint=yes
+ else
+ need_64bit_hwint=no
+ fi
+ ;;
*)
need_64bit_hwint=no ;;
esac