[Python-checkins] cpython: Issue #13590: Improve support for OS X Xcode 4:
ned.deily
python-checkins at python.org
Sun Jun 24 01:03:22 CEST 2012
http://hg.python.org/cpython/rev/688d48e434e4
changeset: 77661:688d48e434e4
user: Ned Deily <nad at acm.org>
date: Sat Jun 23 16:02:19 2012 -0700
summary:
Issue #13590: Improve support for OS X Xcode 4:
- Try to avoid building Python or extension modules with problematic
llvm-gcc compiler.
- Since Xcode 4 removes ppc support, extension module builds now
check for ppc compiler support and automatically remove ppc and
ppc64 archs when not available.
- Since Xcode 4 no longer install SDKs in default locations,
extension module builds now revert to using installed headers
and libs if the SDK used to build the interpreter is not
available.
- Update ./configure to use better defaults for universal builds;
in particular, --enable-universalsdk=yes uses the Xcode default
SDK and --with-universal-archs now defaults to "intel" if ppc
not available.
files:
Lib/distutils/sysconfig.py | 147 +++++-
Lib/distutils/unixccompiler.py | 21 +-
Misc/NEWS | 15 +
configure | 405 ++++++++++++++-------
configure.ac | 87 ++++-
5 files changed, 498 insertions(+), 177 deletions(-)
diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -162,7 +162,7 @@
"I don't know where Python installs its library "
"on platform '%s'" % os.name)
-_USE_CLANG = None
+
def customize_compiler(compiler):
"""Do any platform-specific customization of a CCompiler instance.
@@ -177,36 +177,7 @@
newcc = None
if 'CC' in os.environ:
- newcc = os.environ['CC']
- elif sys.platform == 'darwin' and cc == 'gcc-4.2':
- # Issue #13590:
- # Since Apple removed gcc-4.2 in Xcode 4.2, we can no
- # longer assume it is available for extension module builds.
- # If Python was built with gcc-4.2, check first to see if
- # it is available on this system; if not, try to use clang
- # instead unless the caller explicitly set CC.
- global _USE_CLANG
- if _USE_CLANG is None:
- from distutils import log
- from subprocess import Popen, PIPE
- p = Popen("! type gcc-4.2 && type clang && exit 2",
- shell=True, stdout=PIPE, stderr=PIPE)
- p.wait()
- if p.returncode == 2:
- _USE_CLANG = True
- log.warn("gcc-4.2 not found, using clang instead")
- else:
- _USE_CLANG = False
- if _USE_CLANG:
- newcc = 'clang'
- if newcc:
- # On OS X, if CC is overridden, use that as the default
- # command for LDSHARED as well
- if (sys.platform == 'darwin'
- and 'LDSHARED' not in os.environ
- and ldshared.startswith(cc)):
- ldshared = newcc + ldshared[len(cc):]
- cc = newcc
+ cc = os.environ['CC']
if 'CXX' in os.environ:
cxx = os.environ['CXX']
if 'LDSHARED' in os.environ:
@@ -522,6 +493,29 @@
_config_vars = g
+def _read_output(commandstring):
+ """
+ Returns os.popen(commandstring, "r").read(), but
+ without actually using os.popen because that
+ function is not usable during python bootstrap
+ """
+ # NOTE: tempfile is also not useable during
+ # bootstrap
+ import contextlib
+ try:
+ import tempfile
+ fp = tempfile.NamedTemporaryFile()
+ except ImportError:
+ fp = open("/tmp/distutils.%s"%(
+ os.getpid(),), "w+b")
+
+ with contextlib.closing(fp) as fp:
+ cmd = "%s >'%s'"%(commandstring, fp.name)
+ os.system(cmd)
+ data = fp.read()
+
+ return data.decode('utf-8')
+
def get_config_vars(*args):
"""With no arguments, return a dictionary of all configuration
variables relevant for the current platform. Generally this includes
@@ -561,9 +555,70 @@
_config_vars['srcdir'] = os.path.normpath(srcdir)
if sys.platform == 'darwin':
+ from distutils.spawn import find_executable
+
kernel_version = os.uname()[2] # Kernel version (8.4.3)
major_version = int(kernel_version.split('.')[0])
+ # Issue #13590:
+ # The OSX location for the compiler varies between OSX
+ # (or rather Xcode) releases. With older releases (up-to 10.5)
+ # the compiler is in /usr/bin, with newer releases the compiler
+ # can only be found inside Xcode.app if the "Command Line Tools"
+ # are not installed.
+ #
+ # Futhermore, the compiler that can be used varies between
+ # Xcode releases. Upto Xcode 4 it was possible to use 'gcc-4.2'
+ # as the compiler, after that 'clang' should be used because
+ # gcc-4.2 is either not present, or a copy of 'llvm-gcc' that
+ # miscompiles Python.
+
+ # skip checks if the compiler was overriden with a CC env variable
+ if 'CC' not in os.environ:
+ cc = oldcc = _config_vars['CC']
+ if not find_executable(cc):
+ # Compiler is not found on the shell search PATH.
+ # Now search for clang, first on PATH (if the Command LIne
+ # Tools have been installed in / or if the user has provided
+ # another location via CC). If not found, try using xcrun
+ # to find an uninstalled clang (within a selected Xcode).
+
+ # NOTE: Cannot use subprocess here because of bootstrap
+ # issues when building Python itself (and os.popen is
+ # implemented on top of subprocess and is therefore not
+ # usable as well)
+
+ data = (find_executable('clang') or
+ _read_output(
+ "/usr/bin/xcrun -find clang 2>/dev/null").strip())
+ if not data:
+ raise DistutilsPlatformError(
+ "Cannot locate working compiler")
+
+ _config_vars['CC'] = cc = data
+ _config_vars['CXX'] = cc + '++'
+
+ elif os.path.basename(cc).startswith('gcc'):
+ # Compiler is GCC, check if it is LLVM-GCC
+ data = _read_output("'%s' --version 2>/dev/null"
+ % (cc.replace("'", "'\"'\"'"),))
+ if 'llvm-gcc' in data:
+ # Found LLVM-GCC, fall back to clang
+ data = (find_executable('clang') or
+ _read_output(
+ "/usr/bin/xcrun -find clang 2>/dev/null").strip())
+ if find_executable(data):
+ _config_vars['CC'] = cc = data
+ _config_vars['CXX'] = cc + '++'
+
+ if (cc != oldcc
+ and 'LDSHARED' in _config_vars
+ and 'LDSHARED' not in os.environ):
+ # modify LDSHARED if we modified CC
+ ldshared = _config_vars['LDSHARED']
+ if ldshared.startswith(oldcc):
+ _config_vars['LDSHARED'] = cc + ldshared[len(oldcc):]
+
if major_version < 8:
# On Mac OS X before 10.4, check if -arch and -isysroot
# are in CFLAGS or LDFLAGS and remove them if they are.
@@ -579,19 +634,45 @@
_config_vars[key] = flags
else:
+ # Different Xcode releases support different sets for '-arch'
+ # flags. In particular, Xcode 4.x no longer supports the
+ # PPC architectures.
+ #
+ # This code automatically removes '-arch ppc' and '-arch ppc64'
+ # when these are not supported. That makes it possible to
+ # build extensions on OSX 10.7 and later with the prebuilt
+ # 32-bit installer on the python.org website.
+ flags = _config_vars['CFLAGS']
+ if re.search('-arch\s+ppc', flags) is not None:
+ # NOTE: Cannot use subprocess here because of bootstrap
+ # issues when building Python itself
+ status = os.system("'%s' -arch ppc -x c /dev/null 2>/dev/null"%(
+ _config_vars['CC'].replace("'", "'\"'\"'"),))
+
+ if status != 0:
+ # Compiler doesn't support PPC, remove the related
+ # '-arch' flags.
+ for key in ('LDFLAGS', 'BASECFLAGS',
+ # a number of derived variables. These need to be
+ # patched up as well.
+ 'CFLAGS', 'PY_CFLAGS', 'BLDSHARED', 'LDSHARED'):
+
+ flags = _config_vars[key]
+ flags = re.sub('-arch\s+ppc\w*\s', ' ', flags)
+ _config_vars[key] = flags
+
# Allow the user to override the architecture flags using
# an environment variable.
# NOTE: This name was introduced by Apple in OSX 10.5 and
# is used by several scripting languages distributed with
# that OS release.
-
if 'ARCHFLAGS' in os.environ:
arch = os.environ['ARCHFLAGS']
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
- 'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
+ 'CFLAGS', 'PY_CFLAGS', 'BLDSHARED', 'LDSHARED'):
flags = _config_vars[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
diff --git a/Lib/distutils/unixccompiler.py b/Lib/distutils/unixccompiler.py
--- a/Lib/distutils/unixccompiler.py
+++ b/Lib/distutils/unixccompiler.py
@@ -83,9 +83,8 @@
except ValueError:
pass
- # Check if the SDK that is used during compilation actually exists,
- # the universal build requires the usage of a universal SDK and not all
- # users have that installed by default.
+ # Check if the SDK that is used during compilation actually exists.
+ # If not, revert to using the installed headers and hope for the best.
sysroot = None
if '-isysroot' in cc_args:
idx = cc_args.index('-isysroot')
@@ -97,7 +96,21 @@
if sysroot and not os.path.isdir(sysroot):
log.warn("Compiling with an SDK that doesn't seem to exist: %s",
sysroot)
- log.warn("Please check your Xcode installation")
+ log.warn("Attempting to compile without the SDK")
+ while True:
+ try:
+ index = cc_args.index('-isysroot')
+ # Strip this argument and the next one:
+ del cc_args[index:index+2]
+ except ValueError:
+ break
+ while True:
+ try:
+ index = compiler_so.index('-isysroot')
+ # Strip this argument and the next one:
+ del compiler_so[index:index+2]
+ except ValueError:
+ break
return compiler_so
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -234,6 +234,21 @@
Build
-----
+- Issue #13590: Improve support for OS X Xcode 4:
+ * Try to avoid building Python or extension modules with problematic
+ llvm-gcc compiler.
+ * Since Xcode 4 removes ppc support, extension module builds now
+ check for ppc compiler support and automatically remove ppc and
+ ppc64 archs when not available.
+ * Since Xcode 4 no longer install SDKs in default locations,
+ extension module builds now revert to using installed headers
+ and libs if the SDK used to build the interpreter is not
+ available.
+ * Update ./configure to use better defaults for universal builds;
+ in particular, --enable-universalsdk=yes uses the Xcode default
+ SDK and --with-universal-archs now defaults to "intel" if ppc
+ not available.
+
- Issue #14225: Fix Unicode support for curses (#12567) on OS X
- Issue #14928: Fix importlib bootstrap issues by using a custom executable
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -1,13 +1,11 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for python 3.3.
+# Generated by GNU Autoconf 2.69 for python 3.3.
#
# Report bugs to <http://bugs.python.org/>.
#
#
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
-# Foundation, Inc.
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
#
#
# This configure script is free software; the Free Software Foundation
@@ -136,6 +134,31 @@
# CDPATH.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+# Use a proper internal environment variable to ensure we don't fall
+ # into an infinite loop, continuously re-executing ourselves.
+ if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+ _as_can_reexec=no; export _as_can_reexec;
+ # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+ *v*x* | *x*v* ) as_opts=-vx ;;
+ *v* ) as_opts=-v ;;
+ *x* ) as_opts=-x ;;
+ * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+ fi
+ # We don't want this to propagate to other subprocesses.
+ { _as_can_reexec=; unset _as_can_reexec;}
if test "x$CONFIG_SHELL" = x; then
as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
emulate sh
@@ -169,7 +192,8 @@
else
exitcode=1; echo positional parameters were not saved.
fi
-test x\$exitcode = x0 || exit 1"
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -214,21 +238,25 @@
if test "x$CONFIG_SHELL" != x; then :
- # We cannot yet assume a decent shell, so we have to provide a
- # neutralization value for shells without unset; and this also
- # works around shells that cannot unset nonexistent variables.
- # Preserve -v and -x to the replacement shell.
- BASH_ENV=/dev/null
- ENV=/dev/null
- (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
- export CONFIG_SHELL
- case $- in # ((((
- *v*x* | *x*v* ) as_opts=-vx ;;
- *v* ) as_opts=-v ;;
- *x* ) as_opts=-x ;;
- * ) as_opts= ;;
- esac
- exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
+ export CONFIG_SHELL
+ # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+ *v*x* | *x*v* ) as_opts=-vx ;;
+ *v* ) as_opts=-v ;;
+ *x* ) as_opts=-x ;;
+ * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
fi
if test x$as_have_required = xno; then :
@@ -331,6 +359,14 @@
} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+ test -f "$1" && test -x "$1"
+} # as_fn_executable_p
# as_fn_append VAR VALUE
# ----------------------
# Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -452,6 +488,10 @@
chmod +x "$as_me.lineno" ||
{ $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+ # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+ # already done that, so ensure we don't try to do so again and fall
+ # in an infinite loop. This has already happened in practice.
+ _as_can_reexec=no; export _as_can_reexec
# Don't try to exec as it changes $[0], causing all sort of problems
# (the dirname of $[0] is not the place where we might find the
# original and so on. Autoconf is especially sensitive to this).
@@ -486,16 +526,16 @@
# ... but there are two gotchas:
# 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
# 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
- # In both cases, we have to default to `cp -p'.
+ # In both cases, we have to default to `cp -pR'.
ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
elif ln conf$$.file conf$$ 2>/dev/null; then
as_ln_s=ln
else
- as_ln_s='cp -p'
- fi
-else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
+ fi
+else
+ as_ln_s='cp -pR'
fi
rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
rmdir conf$$.dir 2>/dev/null
@@ -507,28 +547,8 @@
as_mkdir_p=false
fi
-if test -x / >/dev/null 2>&1; then
- as_test_x='test -x'
-else
- if ls -dL / >/dev/null 2>&1; then
- as_ls_L_option=L
- else
- as_ls_L_option=
- fi
- as_test_x='
- eval sh -c '\''
- if test -d "$1"; then
- test -d "$1/.";
- else
- case $1 in #(
- -*)set "./$1";;
- esac;
- case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
- ???[sx]*):;;*)false;;esac;fi
- '\'' sh
- '
-fi
-as_executable_p=$as_test_x
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
# Sed expression to map a string onto a valid CPP name.
as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -1243,8 +1263,6 @@
if test "x$host_alias" != x; then
if test "x$build_alias" = x; then
cross_compiling=maybe
- $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
- If a cross compiler is detected then cross compile mode will be used" >&2
elif test "x$build_alias" != "x$host_alias"; then
cross_compiling=yes
fi
@@ -1404,7 +1422,7 @@
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--enable-universalsdk[=SDKDIR]
- Build against Mac OS X 10.4u SDK (ppc/i386)
+ Build fat binary against Mac OS X SDK
--enable-framework[=INSTALLDIR]
Build (MacOSX|Darwin) framework
--enable-shared disable/enable building shared python library
@@ -1534,9 +1552,9 @@
if $ac_init_version; then
cat <<\_ACEOF
python configure 3.3
-generated by GNU Autoconf 2.68
-
-Copyright (C) 2010 Free Software Foundation, Inc.
+generated by GNU Autoconf 2.69
+
+Copyright (C) 2012 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
@@ -1612,7 +1630,7 @@
test ! -s conftest.err
} && test -s conftest$ac_exeext && {
test "$cross_compiling" = yes ||
- $as_test_x conftest$ac_exeext
+ test -x conftest$ac_exeext
}; then :
ac_retval=0
else
@@ -1910,7 +1928,8 @@
main ()
{
static int test_array [1 - 2 * !((($ac_type) -1 >> ($2 / 2 - 1)) >> ($2 / 2 - 1) == 3)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -1964,7 +1983,8 @@
main ()
{
static int test_array [1 - 2 * !(0 < ($ac_type) ((((($ac_type) 1 << N) << N) - 1) * 2 + 1))];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -1980,7 +2000,8 @@
{
static int test_array [1 - 2 * !(($ac_type) ((((($ac_type) 1 << N) << N) - 1) * 2 + 1)
< ($ac_type) ((((($ac_type) 1 << N) << N) - 1) * 2 + 2))];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2030,7 +2051,8 @@
main ()
{
static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2046,7 +2068,8 @@
main ()
{
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2072,7 +2095,8 @@
main ()
{
static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2088,7 +2112,8 @@
main ()
{
static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2122,7 +2147,8 @@
main ()
{
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -2365,7 +2391,7 @@
running configure, to aid debugging if configure makes a mistake.
It was created by python $as_me 3.3, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
@@ -2735,7 +2761,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_HAS_HG="found"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -2944,10 +2970,16 @@
enableval=$enable_universalsdk;
case $enableval in
yes)
- enableval=/Developer/SDKs/MacOSX10.4u.sdk
- if test ! -d "${enableval}"
+ # Locate the best usable SDK, see Mac/README.txt for more
+ # information
+ enableval="`/usr/bin/xcodebuild -version -sdk macosx Path 2>/dev/null`"
+ if test -z "${enableval}"
then
- enableval=/
+ enableval=/Developer/SDKs/MacOSX10.4u.sdk
+ if test ! -d "${enableval}"
+ then
+ enableval=/
+ fi
fi
;;
esac
@@ -2985,7 +3017,20 @@
+# For backward compatibility reasons we prefer to select '32-bit' if available,
+# otherwise use 'intel'
UNIVERSAL_ARCHS="32-bit"
+if test "`uname -s`" = "Darwin"
+then
+ if test -n "${UNIVERSALSDK}"
+ then
+ if test -z "`/usr/bin/file "${UNIVERSALSDK}/usr/lib/libSystem.dylib" | grep ppc`"
+ then
+ UNIVERSAL_ARCHS="intel"
+ fi
+ fi
+fi
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-universal-archs" >&5
$as_echo_n "checking for --with-universal-archs... " >&6; }
@@ -2999,8 +3044,8 @@
else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: 32-bit" >&5
-$as_echo "32-bit" >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${UNIVERSAL_ARCHS}" >&5
+$as_echo "${UNIVERSAL_ARCHS}" >&6; }
fi
@@ -3377,6 +3422,66 @@
if test -z "$CFLAGS"; then
CFLAGS=
fi
+
+if test "$ac_sys_system" = "Darwin"
+then
+ # Compiler selection on MacOSX is more complicated than
+ # AC_PROG_CC can handle, see Mac/README.txt for more
+ # information
+ if test -z "${CC}"
+ then
+ found_gcc=
+ found_clang=
+ as_save_IFS=$IFS; IFS=:
+ for as_dir in $PATH
+ do
+ IFS=$as_save_IFS
+ if test -x $as_dir/gcc; then
+ if test -z "${found_gcc}"; then
+ found_gcc=$as_dir/gcc
+ fi
+ fi
+ if test -x $as_dir/clang; then
+ if test -z "${found_clang}"; then
+ found_clang=$as_dir/clang
+ fi
+ fi
+ done
+ IFS=$as_save_IFS
+
+ if test -n "$found_gcc" -a -n "$found_clang"
+ then
+ if test -n "`"$found_gcc" --version | grep llvm-gcc`"
+ then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: Detected llvm-gcc, falling back to clang" >&5
+$as_echo "$as_me: Detected llvm-gcc, falling back to clang" >&6;}
+ CC="$found_clang"
+ CXX="$found_clang++"
+ fi
+
+
+ elif test -z "$found_gcc" -a -n "$found_clang"
+ then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: No GCC found, use CLANG" >&5
+$as_echo "$as_me: No GCC found, use CLANG" >&6;}
+ CC="$found_clang"
+ CXX="$found_clang++"
+
+ elif test -z "$found_gcc" -a -z "$found_clang"
+ then
+ found_clang=`/usr/bin/xcrun -find clang 2>/dev/null`
+ if test -n "${found_clang}"
+ then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: Using clang from Xcode.app" >&5
+$as_echo "$as_me: Using clang from Xcode.app" >&6;}
+ CC="${found_clang}"
+ CXX="`/usr/bin/xcrun -find clang++`"
+
+ # else: use default behaviour
+ fi
+ fi
+ fi
+fi
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -3399,7 +3504,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="${ac_tool_prefix}gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -3439,7 +3544,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_CC="gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -3492,7 +3597,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="${ac_tool_prefix}cc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -3533,7 +3638,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
ac_prog_rejected=yes
continue
@@ -3591,7 +3696,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -3635,7 +3740,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_CC="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -4081,8 +4186,7 @@
/* end confdefs.h. */
#include <stdarg.h>
#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+struct stat;
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
@@ -4221,7 +4325,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -4262,7 +4366,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -4285,6 +4389,47 @@
fi
;;
+ clang|*/clang) # Extract the first word of "clang++", so it can be a program name with args.
+set dummy clang++; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_CXX+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $CXX in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_CXX="$CXX" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in notfound
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_path_CXX="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+ test -z "$ac_cv_path_CXX" && ac_cv_path_CXX="clang++"
+ ;;
+esac
+fi
+CXX=$ac_cv_path_CXX
+if test -n "$CXX"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+$as_echo "$CXX" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ ;;
esac
if test "$CXX" = "notfound"
then
@@ -4311,7 +4456,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CXX="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -4542,7 +4687,7 @@
for ac_prog in grep ggrep; do
for ac_exec_ext in '' $ac_executable_extensions; do
ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+ as_fn_executable_p "$ac_path_GREP" || continue
# Check for GNU ac_path_GREP and select it if it is found.
# Check for GNU $ac_path_GREP
case `"$ac_path_GREP" --version 2>&1` in
@@ -4608,7 +4753,7 @@
for ac_prog in egrep; do
for ac_exec_ext in '' $ac_executable_extensions; do
ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+ as_fn_executable_p "$ac_path_EGREP" || continue
# Check for GNU ac_path_EGREP and select it if it is found.
# Check for GNU $ac_path_EGREP
case `"$ac_path_EGREP" --version 2>&1` in
@@ -4815,8 +4960,8 @@
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-# define __EXTENSIONS__ 1
- $ac_includes_default
+# define __EXTENSIONS__ 1
+ $ac_includes_default
int
main ()
{
@@ -5210,7 +5355,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -5250,7 +5395,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_RANLIB="ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -5304,7 +5449,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_AR="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -5355,7 +5500,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_HAS_PYTHON="found"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -5428,7 +5573,7 @@
# by default.
for ac_prog in ginstall scoinst install; do
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
if test $ac_prog = install &&
grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
# AIX install. It has an incompatible calling convention.
@@ -5497,7 +5642,7 @@
test -z "$as_dir" && as_dir=.
for ac_prog in mkdir gmkdir; do
for ac_exec_ext in '' $ac_executable_extensions; do
- { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
+ as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue
case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
'mkdir (GNU coreutils) '* | \
'mkdir (coreutils) '* | \
@@ -8387,7 +8532,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -8430,7 +8575,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_ac_pt_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -10032,7 +10177,7 @@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_TRUE="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
@@ -11469,7 +11614,8 @@
main ()
{
static int test_array [1 - 2 * !(((char) -1) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
@@ -11500,11 +11646,11 @@
int
main ()
{
-/* FIXME: Include the comments suggested by Paul. */
+
#ifndef __cplusplus
- /* Ultrix mips cc rejects this. */
+ /* Ultrix mips cc rejects this sort of thing. */
typedef int charset[2];
- const charset cs;
+ const charset cs = { 0, 0 };
/* SunOS 4.1.1 cc rejects this. */
char const *const *pcpcc;
char **ppc;
@@ -11521,8 +11667,9 @@
++pcpcc;
ppc = (char**) pcpcc;
pcpcc = (char const *const *) ppc;
- { /* SCO 3.2v4 cc rejects this. */
- char *t;
+ { /* SCO 3.2v4 cc rejects this sort of thing. */
+ char tx;
+ char *t = &tx;
char const *s = 0 ? (char *) 0 : (char const *) 0;
*t++ = 0;
@@ -11538,10 +11685,10 @@
iptr p = 0;
++p;
}
- { /* AIX XL C 1.02.0.0 rejects this saying
+ { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
"k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
- struct s { int j; const int *ap[3]; };
- struct s *b; b->j = 5;
+ struct s { int j; const int *ap[3]; } bx;
+ struct s *b = &bx; b->j = 5;
}
{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
const int foo = 10;
@@ -14830,16 +14977,16 @@
# ... but there are two gotchas:
# 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
# 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
- # In both cases, we have to default to `cp -p'.
+ # In both cases, we have to default to `cp -pR'.
ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
elif ln conf$$.file conf$$ 2>/dev/null; then
as_ln_s=ln
else
- as_ln_s='cp -p'
- fi
-else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
+ fi
+else
+ as_ln_s='cp -pR'
fi
rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
rmdir conf$$.dir 2>/dev/null
@@ -14899,28 +15046,16 @@
as_mkdir_p=false
fi
-if test -x / >/dev/null 2>&1; then
- as_test_x='test -x'
-else
- if ls -dL / >/dev/null 2>&1; then
- as_ls_L_option=L
- else
- as_ls_L_option=
- fi
- as_test_x='
- eval sh -c '\''
- if test -d "$1"; then
- test -d "$1/.";
- else
- case $1 in #(
- -*)set "./$1";;
- esac;
- case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
- ???[sx]*):;;*)false;;esac;fi
- '\'' sh
- '
-fi
-as_executable_p=$as_test_x
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+ test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
# Sed expression to map a string onto a valid CPP name.
as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -14942,7 +15077,7 @@
# values after options handling.
ac_log="
This file was extended by python $as_me 3.3, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
CONFIG_HEADERS = $CONFIG_HEADERS
@@ -15004,10 +15139,10 @@
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
python config.status 3.3
-configured by $0, generated by GNU Autoconf 2.68,
+configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."
@@ -15097,7 +15232,7 @@
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
if \$ac_cs_recheck; then
- set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
shift
\$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
CONFIG_SHELL='$SHELL'
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -104,14 +104,20 @@
AC_MSG_CHECKING([for --enable-universalsdk])
AC_ARG_ENABLE(universalsdk,
- AS_HELP_STRING([--enable-universalsdk@<:@=SDKDIR@:>@], [Build against Mac OS X 10.4u SDK (ppc/i386)]),
+ AS_HELP_STRING([--enable-universalsdk@<:@=SDKDIR@:>@], [Build fat binary against Mac OS X SDK]),
[
case $enableval in
yes)
- enableval=/Developer/SDKs/MacOSX10.4u.sdk
- if test ! -d "${enableval}"
+ # Locate the best usable SDK, see Mac/README.txt for more
+ # information
+ enableval="`/usr/bin/xcodebuild -version -sdk macosx Path 2>/dev/null`"
+ if test -z "${enableval}"
then
- enableval=/
+ enableval=/Developer/SDKs/MacOSX10.4u.sdk
+ if test ! -d "${enableval}"
+ then
+ enableval=/
+ fi
fi
;;
esac
@@ -143,7 +149,20 @@
AC_SUBST(ARCH_RUN_32BIT)
+# For backward compatibility reasons we prefer to select '32-bit' if available,
+# otherwise use 'intel'
UNIVERSAL_ARCHS="32-bit"
+if test "`uname -s`" = "Darwin"
+then
+ if test -n "${UNIVERSALSDK}"
+ then
+ if test -z "`/usr/bin/file "${UNIVERSALSDK}/usr/lib/libSystem.dylib" | grep ppc`"
+ then
+ UNIVERSAL_ARCHS="intel"
+ fi
+ fi
+fi
+
AC_SUBST(LIPO_32BIT_FLAGS)
AC_MSG_CHECKING(for --with-universal-archs)
AC_ARG_WITH(universal-archs,
@@ -153,7 +172,7 @@
UNIVERSAL_ARCHS="$withval"
],
[
- AC_MSG_RESULT(32-bit)
+ AC_MSG_RESULT(${UNIVERSAL_ARCHS})
])
@@ -501,6 +520,63 @@
if test -z "$CFLAGS"; then
CFLAGS=
fi
+
+if test "$ac_sys_system" = "Darwin"
+then
+ # Compiler selection on MacOSX is more complicated than
+ # AC_PROG_CC can handle, see Mac/README.txt for more
+ # information
+ if test -z "${CC}"
+ then
+ found_gcc=
+ found_clang=
+ as_save_IFS=$IFS; IFS=:
+ for as_dir in $PATH
+ do
+ IFS=$as_save_IFS
+ if test -x $as_dir/gcc; then
+ if test -z "${found_gcc}"; then
+ found_gcc=$as_dir/gcc
+ fi
+ fi
+ if test -x $as_dir/clang; then
+ if test -z "${found_clang}"; then
+ found_clang=$as_dir/clang
+ fi
+ fi
+ done
+ IFS=$as_save_IFS
+
+ if test -n "$found_gcc" -a -n "$found_clang"
+ then
+ if test -n "`"$found_gcc" --version | grep llvm-gcc`"
+ then
+ AC_MSG_NOTICE([Detected llvm-gcc, falling back to clang])
+ CC="$found_clang"
+ CXX="$found_clang++"
+ fi
+
+
+ elif test -z "$found_gcc" -a -n "$found_clang"
+ then
+ AC_MSG_NOTICE([No GCC found, use CLANG])
+ CC="$found_clang"
+ CXX="$found_clang++"
+
+ elif test -z "$found_gcc" -a -z "$found_clang"
+ then
+ found_clang=`/usr/bin/xcrun -find clang 2>/dev/null`
+ if test -n "${found_clang}"
+ then
+ AC_MSG_NOTICE([Using clang from Xcode.app])
+ CC="${found_clang}"
+ CXX="`/usr/bin/xcrun -find clang++`"
+
+ # else: use default behaviour
+ fi
+ fi
+ fi
+fi
AC_PROG_CC
AC_SUBST(CXX)
@@ -534,6 +610,7 @@
case "$CC" in
gcc) AC_PATH_PROG(CXX, [g++], [g++], [notfound]) ;;
cc) AC_PATH_PROG(CXX, [c++], [c++], [notfound]) ;;
+ clang|*/clang) AC_PATH_PROG(CXX, [clang++], [clang++], [notfound]) ;;
esac
if test "$CXX" = "notfound"
then
--
Repository URL: http://hg.python.org/cpython
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