bpo-29243: Fix Makefile with respect to --enable-optimizations (#1478)

* bpo-29243: Fix Makefile with respect to --enable-optimizations

When using the Profile Guided Optimization (./configure --enable-optimizations)
Python is built not only during `make` but rebuilt again during `make test`,
`make install` and others. This patch fixes the issue.

Note that this fix produces no change at all in the Makefile if configure is
run witout --enable-optimizations.

* !squash

3 files changed, 12 insertions, 7 deletions

diff --git a/Makefile.pre.in b/Makefile.pre.in
index 12593a2..c40a198 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -999,7 +999,7 @@ TESTTIMEOUT=	1200
 
 # Run a basic set of regression tests.
 # This excludes some tests that are particularly resource-intensive.
-test:		all platform
+test:		@DEF_MAKE_RULE@ platform
 		$(TESTRUNNER) $(TESTOPTS)
 
 # Run the full test suite twice - once without .pyc files, and once with.
@@ -1009,7 +1009,7 @@ test:		all platform
 # the bytecode read from a .pyc file had the bug, sometimes the directly
 # generated bytecode.  This is sometimes a very shy bug needing a lot of
 # sample data.
-testall:	all platform
+testall:	@DEF_MAKE_RULE@ platform
 		-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
 		$(TESTPYTHON) -E $(srcdir)/Lib/compileall.py
 		-find $(srcdir)/Lib -name '*.py[co]' -print | xargs rm -f
@@ -1018,7 +1018,7 @@ testall:	all platform
 
 # Run the test suite for both architectures in a Universal build on OSX.
 # Must be run on an Intel box.
-testuniversal:	all platform
+testuniversal:	@DEF_MAKE_RULE@ platform
 		@if [ `arch` != 'i386' ]; then \
 			echo "This can only be used on OSX/i386" ;\
 			exit 1 ;\
@@ -1041,7 +1041,7 @@ QUICKTESTOPTS=	$(TESTOPTS) -x test_subprocess test_io test_lib2to3 \
 		test_multiprocessing_forkserver \
 		test_mailbox test_socket test_poll \
 		test_select test_zipfile test_concurrent_futures
-quicktest:	all platform
+quicktest:	@DEF_MAKE_RULE@ platform
 		$(TESTRUNNER) $(QUICKTESTOPTS)
 
 
@@ -1378,7 +1378,7 @@ LIBPL=		@LIBPL@
 # pkgconfig directory
 LIBPC=		$(LIBDIR)/pkgconfig
 
-libainstall:	all python-config
+libainstall:	@DEF_MAKE_RULE@ python-config
 	@for i in $(LIBDIR) $(LIBPL) $(LIBPC); \
 	do \
 		if test ! -d $(DESTDIR)$$i; then \
@@ -1640,7 +1640,7 @@ distclean: clobber
 				     -exec rm -f {} ';'
 
 # Check for smelly exported symbols (not starting with Py/_Py)
-smelly: all
+smelly: @DEF_MAKE_RULE@
 	nm -p $(LIBRARY) | \
 		sed -n "/ [TDB] /s/.* //p" | grep -v "^_*Py" | sort -u; \
 
@@ -1677,7 +1677,7 @@ funny:
 		-o -print
 
 # Perform some verification checks on any modified files.
-patchcheck: all
+patchcheck: @DEF_MAKE_RULE@
 	$(RUNSHARED) ./$(BUILDPYTHON) $(srcdir)/Tools/scripts/patchcheck.py
 
 # Dependencies
diff --git a/Misc/ACKS b/Misc/ACKS
index fb62b5b..6f80ab7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1120,6 +1120,7 @@ Bastien Orivel
 Douglas Orr
 William Orr
 Michele Orrù
+Tomáš Orsava
 Oleg Oshmyan
 Denis S. Otkidach
 Peter Otten
diff --git a/Misc/NEWS b/Misc/NEWS
index 4500021..25619ef 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1037,6 +1037,10 @@ Documentation
 Build
 -----
 
+- bpo-29243: Prevent unnecessary rebuilding of Python during ``make test``,
+  ``make install`` and some other make targets when configured with
+  ``--enable-optimizations``.
+
 - bpo-23404: Don't regenerate generated files based on file modification time
   anymore: the action is now explicit. Replace ``make touch`` with
   ``make regen-all``.