From 720bb456dc711b0776bae837d1f9a0b10c28ddf2 Mon Sep 17 00:00:00 2001
From: Ned Deily <nad@python.org>
Date: Tue, 15 Mar 2022 03:18:39 -0400
Subject: [PATCH] bpo-45405: Prevent internal configure error when running
configure with recent versions of clang. (GH-28845) (GH-31890)
Change the configure logic to function properly on macOS when the compiler
outputs a platform triplet for option --print-multiarch.
The Apple Clang included with Xcode 13.3 now supports --print-multiarch
causing configure to fail without this change.
Co-authored-by: Ned Deily <nad@python.org>
(cherry picked from commit 9c4766772cda67648184f8ddba546a5fc0167f91)
Co-authored-by: David Bohman <debohman@gmail.com>
---
.../next/Build/2021-10-11-16-27-38.bpo-45405.iSfdW5.rst | 2 ++
configure | 8 +++++---
configure.ac | 8 +++++---
3 files changed, 12 insertions(+), 6 deletions(-)
create mode 100644 Misc/NEWS.d/next/Build/2021-10-11-16-27-38.bpo-45405.iSfdW5.rst
diff --git a/Misc/NEWS.d/next/Build/2021-10-11-16-27-38.bpo-45405.iSfdW5.rst b/Misc/NEWS.d/next/Build/2021-10-11-16-27-38.bpo-45405.iSfdW5.rst
new file mode 100644
index 00000000000..13c93d1b8a5
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2021-10-11-16-27-38.bpo-45405.iSfdW5.rst
@@ -0,0 +1,2 @@
+Prevent ``internal configure error`` when running ``configure``
+with recent versions of clang. Patch by David Bohman.
diff --git a/configure b/configure
index 829dd69bb8b..455481bc500 100755
--- a/configure
+++ b/configure
@@ -5183,9 +5183,6 @@ $as_echo "$as_me:
fi
-MULTIARCH=$($CC --print-multiarch 2>/dev/null)
-
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for the platform triplet based on compiler characteristics" >&5
$as_echo_n "checking for the platform triplet based on compiler characteristics... " >&6; }
cat >> conftest.c <<EOF
@@ -5342,6 +5339,11 @@ $as_echo "none" >&6; }
fi
rm -f conftest.c conftest.out
+if test x$PLATFORM_TRIPLET != xdarwin; then
+ MULTIARCH=$($CC --print-multiarch 2>/dev/null)
+fi
+
+
if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then
if test x$PLATFORM_TRIPLET != x$MULTIARCH; then
as_fn_error $? "internal configure error for the platform triplet, please file a bug report" "$LINENO" 5
diff --git a/configure.ac b/configure.ac
index f1cc8e9bcb9..1afcba3307a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -724,9 +724,6 @@ then
fi
-MULTIARCH=$($CC --print-multiarch 2>/dev/null)
-AC_SUBST(MULTIARCH)
-
AC_MSG_CHECKING([for the platform triplet based on compiler characteristics])
cat >> conftest.c <<EOF
#undef bfin
@@ -880,6 +877,11 @@ else
fi
rm -f conftest.c conftest.out
+if test x$PLATFORM_TRIPLET != xdarwin; then
+ MULTIARCH=$($CC --print-multiarch 2>/dev/null)
+fi
+AC_SUBST(MULTIARCH)
+
if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then
if test x$PLATFORM_TRIPLET != x$MULTIARCH; then
AC_MSG_ERROR([internal configure error for the platform triplet, please file a bug report])
--
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