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93 lines
3.4 KiB
93 lines
3.4 KiB
From c7302116573d853d3181133477d9d0e4d4d3abfd Mon Sep 17 00:00:00 2001
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From: Ned Deily <nad@python.org>
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Date: Tue, 18 Jun 2019 16:28:13 -0400
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Subject: [PATCH] bpo-36231: Support building on macOS without /usr/include
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(GH-13773) (GH-14208)
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---
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.../2019-06-03-05-49-49.bpo-36231.RfmW_p.rst | 3 ++
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setup.py | 53 ++++++++++++++++---
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2 files changed, 49 insertions(+), 7 deletions(-)
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create mode 100644 Misc/NEWS.d/next/macOS/2019-06-03-05-49-49.bpo-36231.RfmW_p.rst
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diff --git a/Misc/NEWS.d/next/macOS/2019-06-03-05-49-49.bpo-36231.RfmW_p.rst b/Misc/NEWS.d/next/macOS/2019-06-03-05-49-49.bpo-36231.RfmW_p.rst
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new file mode 100644
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index 0000000000..c82e54c12c
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--- /dev/null
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+++ b/Misc/NEWS.d/next/macOS/2019-06-03-05-49-49.bpo-36231.RfmW_p.rst
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@@ -0,0 +1,3 @@
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+Support building Python on macOS without /usr/include installed. As of macOS
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+10.14, system header files are only available within an SDK provided by
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+either the Command Line Tools or the Xcode app.
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diff --git a/setup.py b/setup.py
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index bcc4bfa89d..5e0cd02430 100644
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--- a/setup.py
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+++ b/setup.py
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@@ -90,18 +90,57 @@ def sysroot_paths(make_vars, subdirs):
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break
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return dirs
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+MACOS_SDK_ROOT = None
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+
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def macosx_sdk_root():
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+ """Return the directory of the current macOS SDK.
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+
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+ If no SDK was explicitly configured, call the compiler to find which
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+ include files paths are being searched by default. Use '/' if the
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+ compiler is searching /usr/include (meaning system header files are
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+ installed) or use the root of an SDK if that is being searched.
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+ (The SDK may be supplied via Xcode or via the Command Line Tools).
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+ The SDK paths used by Apple-supplied tool chains depend on the
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+ setting of various variables; see the xcrun man page for more info.
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"""
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- Return the directory of the current OSX SDK,
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- or '/' if no SDK was specified.
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- """
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+ global MACOS_SDK_ROOT
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+
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+ # If already called, return cached result.
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+ if MACOS_SDK_ROOT:
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+ return MACOS_SDK_ROOT
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+
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cflags = sysconfig.get_config_var('CFLAGS')
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m = re.search(r'-isysroot\s+(\S+)', cflags)
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- if m is None:
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- sysroot = '/'
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+ if m is not None:
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+ MACOS_SDK_ROOT = m.group(1)
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else:
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- sysroot = m.group(1)
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- return sysroot
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+ MACOS_SDK_ROOT = '/'
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+ cc = sysconfig.get_config_var('CC')
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+ tmpfile = '/tmp/setup_sdk_root.%d' % os.getpid()
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+ try:
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+ os.unlink(tmpfile)
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+ except:
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+ pass
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+ ret = os.system('%s -E -v - </dev/null 2>%s 1>/dev/null' % (cc, tmpfile))
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+ in_incdirs = False
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+ try:
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+ if ret >> 8 == 0:
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+ with open(tmpfile) as fp:
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+ for line in fp.readlines():
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+ if line.startswith("#include <...>"):
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+ in_incdirs = True
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+ elif line.startswith("End of search list"):
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+ in_incdirs = False
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+ elif in_incdirs:
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+ line = line.strip()
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+ if line == '/usr/include':
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+ MACOS_SDK_ROOT = '/'
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+ elif line.endswith(".sdk/usr/include"):
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+ MACOS_SDK_ROOT = line[:-12]
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+ finally:
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+ os.unlink(tmpfile)
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+
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+ return MACOS_SDK_ROOT
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def is_macosx_sdk_path(path):
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"""
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--
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2.30.1 (Apple Git-130)
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