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newlib-cygwin/newlib/acinclude.m4
Jeff Johnston cd31fbb2ae Add nvptx port. 
- From: Cesar Philippidis <cesar@codesourcery.com>
  Date: Tue, 10 Apr 2018 14:43:42 -0700
  Subject: [PATCH] nvptx port

  This port adds support for Nvidia GPU's, which are primarily used as
  offload accelerators in OpenACC and OpenMP.
2018-04-13 15:42:37 -04:00

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dnl This provides configure definitions used by all the newlib
dnl configure.in files.
AC_DEFUN([DEF_NEWLIB_MAJOR_VERSION],m4_define([NEWLIB_MAJOR_VERSION],[3]))
AC_DEFUN([DEF_NEWLIB_MINOR_VERSION],m4_define([NEWLIB_MINOR_VERSION],[0]))
AC_DEFUN([DEF_NEWLIB_PATCHLEVEL_VERSION],m4_define([NEWLIB_PATCHLEVEL_VERSION],[0]))
AC_DEFUN([DEF_NEWLIB_VERSION],m4_define([NEWLIB_VERSION],[NEWLIB_MAJOR_VERSION.NEWLIB_MINOR_VERSION.NEWLIB_PATCHLEVEL_VERSION]))
dnl Basic newlib configury. This calls basic introductory stuff,
dnl including AM_INIT_AUTOMAKE and AC_CANONICAL_HOST. It also runs
dnl configure.host. The only argument is the relative path to the top
dnl newlib directory.
AC_DEFUN([NEWLIB_CONFIGURE],
[AC_REQUIRE([DEF_NEWLIB_VERSION])
dnl Default to --enable-multilib
AC_ARG_ENABLE(multilib,
[ --enable-multilib build many library versions (default)],
[case "${enableval}" in
yes) multilib=yes ;;
no) multilib=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
esac], [multilib=yes])dnl
dnl Support --enable-target-optspace
AC_ARG_ENABLE(target-optspace,
[ --enable-target-optspace optimize for space],
[case "${enableval}" in
yes) target_optspace=yes ;;
no) target_optspace=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for target-optspace option) ;;
esac], [target_optspace=])dnl
dnl Support --enable-malloc-debugging - currently only supported for Cygwin
AC_ARG_ENABLE(malloc-debugging,
[ --enable-malloc-debugging indicate malloc debugging requested],
[case "${enableval}" in
yes) malloc_debugging=yes ;;
no) malloc_debugging=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for malloc-debugging option) ;;
esac], [malloc_debugging=])dnl
dnl Support --enable-newlib-multithread
AC_ARG_ENABLE(newlib-multithread,
[ --enable-newlib-multithread enable support for multiple threads],
[case "${enableval}" in
yes) newlib_multithread=yes ;;
no) newlib_multithread=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for newlib-multithread option) ;;
esac], [newlib_multithread=yes])dnl
dnl Support --enable-newlib-iconv
AC_ARG_ENABLE(newlib-iconv,
[ --enable-newlib-iconv enable iconv library support],
[if test "${newlib_iconv+set}" != set; then
case "${enableval}" in
yes) newlib_iconv=yes ;;
no) newlib_iconv=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for newlib-iconv option) ;;
esac
fi], [newlib_iconv=${newlib_iconv}])dnl
dnl Support --enable-newlib-elix-level
AC_ARG_ENABLE(newlib-elix-level,
[ --enable-newlib-elix-level supply desired elix library level (1-4)],
[case "${enableval}" in
0) newlib_elix_level=0 ;;
1) newlib_elix_level=1 ;;
2) newlib_elix_level=2 ;;
3) newlib_elix_level=3 ;;
4) newlib_elix_level=4 ;;
*) AC_MSG_ERROR(bad value ${enableval} for newlib-elix-level option) ;;
esac], [newlib_elix_level=0])dnl
dnl Support --disable-newlib-io-float
AC_ARG_ENABLE(newlib-io-float,
[ --disable-newlib-io-float disable printf/scanf family float support],
[case "${enableval}" in
yes) newlib_io_float=yes ;;
no) newlib_io_float=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for newlib-io-float option) ;;
esac], [newlib_io_float=yes])dnl
dnl Support --disable-newlib-supplied-syscalls
AC_ARG_ENABLE(newlib-supplied-syscalls,
[ --disable-newlib-supplied-syscalls disable newlib from supplying syscalls],
[case "${enableval}" in
yes) newlib_may_supply_syscalls=yes ;;
no) newlib_may_supply_syscalls=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for newlib-supplied-syscalls option) ;;
esac], [newlib_may_supply_syscalls=yes])dnl
AM_CONDITIONAL(MAY_SUPPLY_SYSCALLS, test x[$]{newlib_may_supply_syscalls} = xyes)
dnl We may get other options which we don't document:
dnl --with-target-subdir, --with-multisrctop, --with-multisubdir
test -z "[$]{with_target_subdir}" && with_target_subdir=.
if test "[$]{srcdir}" = "."; then
if test "[$]{with_target_subdir}" != "."; then
newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1"
else
newlib_basedir="[$]{srcdir}/[$]{with_multisrctop}$1"
fi
else
newlib_basedir="[$]{srcdir}/$1"
fi
AC_SUBST(newlib_basedir)
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([cygnus no-define 1.9.5])
# FIXME: We temporarily define our own version of AC_PROG_CC. This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
# are probably using a cross compiler, which will not be able to fully
# link an executable. This should really be fixed in autoconf
# itself.
AC_DEFUN([LIB_AC_PROG_CC_GNU],
[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
cat > conftest.c <<EOF
#ifdef __GNUC__
yes;
#endif
EOF
if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
ac_cv_prog_gcc=yes
else
ac_cv_prog_gcc=no
fi])])
AC_DEFUN([LIB_AM_PROG_AS],
[# By default we simply use the C compiler to build assembly code.
AC_REQUIRE([LIB_AC_PROG_CC])
test "${CCAS+set}" = set || CCAS=$CC
test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
AC_ARG_VAR([CCAS], [assembler compiler command (defaults to CC)])
AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
])
AC_DEFUN([LIB_AC_PROG_CC],
[AC_BEFORE([$0], [AC_PROG_CPP])dnl
AC_CHECK_PROG(CC, gcc, gcc)
_AM_DEPENDENCIES(CC)
if test -z "$CC"; then
AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
fi
LIB_AC_PROG_CC_GNU
if test $ac_cv_prog_gcc = yes; then
GCC=yes
dnl Check whether -g works, even if CFLAGS is set, in case the package
dnl plays around with CFLAGS (such as to build both debugging and
dnl normal versions of a library), tasteless as that idea is.
ac_test_CFLAGS="${CFLAGS+set}"
ac_save_CFLAGS="$CFLAGS"
_AC_PROG_CC_G
if test "$ac_test_CFLAGS" = set; then
CFLAGS="$ac_save_CFLAGS"
elif test $ac_cv_prog_cc_g = yes; then
CFLAGS="-g -O2"
else
CFLAGS="-O2"
fi
else
GCC=
test "${CFLAGS+set}" = set || CFLAGS="-g"
fi
])
LIB_AC_PROG_CC
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_CHECK_TOOL(READELF, readelf, :)
AC_PROG_INSTALL
# Hack to ensure that INSTALL won't be set to "../" with autoconf 2.13. */
ac_given_INSTALL=$INSTALL
AM_MAINTAINER_MODE
LIB_AM_PROG_AS
# We need AC_EXEEXT to keep automake happy in cygnus mode. However,
# at least currently, we never actually build a program, so we never
# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
# fails, because we are probably configuring with a cross compiler
# which can't create executables. So we include AC_EXEEXT to keep
# automake happy, but we don't execute it, since we don't care about
# the result.
if false; then
AC_EXEEXT
dummy_var=1
fi
. [$]{newlib_basedir}/configure.host
newlib_cflags="[$]{newlib_cflags} -fno-builtin"
NEWLIB_CFLAGS=${newlib_cflags}
AC_SUBST(NEWLIB_CFLAGS)
NO_INCLUDE_LIST=${noinclude}
AC_SUBST(NO_INCLUDE_LIST)
LDFLAGS=${ldflags}
AC_SUBST(LDFLAGS)
AM_CONDITIONAL(ELIX_LEVEL_0, test x[$]{newlib_elix_level} = x0)
AM_CONDITIONAL(ELIX_LEVEL_1, test x[$]{newlib_elix_level} = x1)
AM_CONDITIONAL(ELIX_LEVEL_2, test x[$]{newlib_elix_level} = x2)
AM_CONDITIONAL(ELIX_LEVEL_3, test x[$]{newlib_elix_level} = x3)
AM_CONDITIONAL(ELIX_LEVEL_4, test x[$]{newlib_elix_level} = x4)
AM_CONDITIONAL(USE_LIBTOOL, test x[$]{use_libtool} = xyes)
# Emit any target-specific warnings.
if test "x${newlib_msg_warn}" != "x"; then
AC_MSG_WARN([${newlib_msg_warn}])
fi
# Hard-code OBJEXT. Normally it is set by AC_OBJEXT, but we
# use oext, which is set in configure.host based on the target platform.
OBJEXT=${oext}
AC_SUBST(OBJEXT)
AC_SUBST(oext)
AC_SUBST(aext)
AC_SUBST(lpfx)
AC_SUBST(libm_machine_dir)
AC_SUBST(machine_dir)
AC_SUBST(sys_dir)
])
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