pythongh-100220: Fix error handling in make rules (pythonGH-100328)

Set `SHELL = /bin/sh -e` to ensure that complex recipes fail on the first error rather than incorrectly reporting success. Co-authored-by: Zachary Ware <zach@python.org>
warsaw · Apr 11, 2023 · d68d292 · d68d292
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commit d68d292
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diff --git a/Makefile.pre.in b/Makefile.pre.in
@@ -59,7 +59,7 @@ DSYMUTIL_PATH=  @DSYMUTIL_PATH@
 GNULD=		@GNULD@
 
 # Shell used by make (some versions default to the login shell, which is bad)
-SHELL=		/bin/sh
+SHELL=		/bin/sh -e
 
 # Use this to make a link between python$(VERSION) and python in $(BINDIR)
 LN=		@LN@

diff --git a/Misc/NEWS.d/next/Build/2022-12-18-07-24-44.gh-issue-100220.BgSV7C.rst b/Misc/NEWS.d/next/Build/2022-12-18-07-24-44.gh-issue-100220.BgSV7C.rst
@@ -0,0 +1,4 @@
+Changed the default value of the ``SHELL`` Makefile variable from ``/bin/sh``
+to ``/bin/sh -e`` to ensure that complex recipes correctly fail after an error.
+Previously, ``make install`` could fail to install some files and yet return
+a successful result.