|
@@ -0,0 +1,79 @@
|
|
|
+From f05b73275515c4a1a70e28e06229bf682ac74385 Mon Sep 17 00:00:00 2001
|
|
|
+From: Romain Naour <romain.naour@gmail.com>
|
|
|
+Date: Thu, 21 May 2020 15:58:02 +0200
|
|
|
+Subject: [PATCH] gcc/Makefile.in: move SELFTEST_DEPS before including language
|
|
|
+ makefile fragments
|
|
|
+
|
|
|
+As reported by several Buildroot users [1][2][3], the gcc build
|
|
|
+may fail while running selftests makefile target.
|
|
|
+
|
|
|
+The problem only occurs when ccache is used with gcc 9 and 10,
|
|
|
+probably due to a race condition.
|
|
|
+
|
|
|
+While debuging with "make -p" we can notice that s-selftest-c target
|
|
|
+contain only "cc1" as dependency instead of cc1 and SELFTEST_DEPS [4].
|
|
|
+
|
|
|
+ s-selftest-c: cc1
|
|
|
+
|
|
|
+While the build is failing, the s-selftest-c dependencies recipe is
|
|
|
+still running and reported as a bug by make.
|
|
|
+
|
|
|
+ "Dependencies recipe running (THIS IS A BUG)."
|
|
|
+
|
|
|
+A change [5] in gcc 9 seems to introduce the problem since we can't
|
|
|
+reproduce this problem with gcc 8.
|
|
|
+
|
|
|
+As suggested by Yann E. MORIN [6], move SELFTEST_DEPS before
|
|
|
+including language makefile fragments.
|
|
|
+
|
|
|
+With the fix applied, the s-seltest-c dependency contains
|
|
|
+SELFTEST_DEPS value.
|
|
|
+
|
|
|
+ s-selftest-c: cc1 xgcc specs stmp-int-hdrs ../../gcc/testsuite/selftests
|
|
|
+
|
|
|
+[1] http://lists.busybox.net/pipermail/buildroot/2020-May/282171.html
|
|
|
+[2] http://lists.busybox.net/pipermail/buildroot/2020-May/282766.html
|
|
|
+[3] https://github.com/cirosantilli/linux-kernel-module-cheat/issues/108
|
|
|
+[4] https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/c/Make-lang.in;h=bfae6fd2549c4f728816cd355fa9739dcc08fcde;hb=033eb5671769a4c681a44aad08a454e667e08502#l120
|
|
|
+[5] https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=033eb5671769a4c681a44aad08a454e667e08502
|
|
|
+[6] http://lists.busybox.net/pipermail/buildroot/2020-May/283213.html
|
|
|
+
|
|
|
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
|
|
|
+Cc: Ben Dakin-Norris <ben.dakin-norris@navtechradar.com>
|
|
|
+Cc: Maxim Kochetkov <fido_max@inbox.ru>
|
|
|
+Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
|
|
|
+Cc: Yann E. MORIN <yann.morin.1998@free.fr>
|
|
|
+Cc: David Malcolm <dmalcolm@gcc.gnu.org>
|
|
|
+---
|
|
|
+This patch should be backported to gcc 10 and gcc 9.
|
|
|
+---
|
|
|
+ gcc/Makefile.in | 6 ++++--
|
|
|
+ 1 file changed, 4 insertions(+), 2 deletions(-)
|
|
|
+
|
|
|
+diff --git a/gcc/Makefile.in b/gcc/Makefile.in
|
|
|
+index 543b477ff18..c8611e35c70 100644
|
|
|
+--- a/gcc/Makefile.in
|
|
|
++++ b/gcc/Makefile.in
|
|
|
+@@ -1725,6 +1725,10 @@ $(FULL_DRIVER_NAME): ./xgcc
|
|
|
+ rm -f $@
|
|
|
+ $(LN_S) $< $@
|
|
|
+
|
|
|
++# SELFTEST_DEPS need to be set before including language makefile fragments.
|
|
|
++# Otherwise $(SELFTEST_DEPS) is empty when used from various <LANG>/Make-lang.in.
|
|
|
++SELFTEST_DEPS = $(GCC_PASSES) stmp-int-hdrs $(srcdir)/testsuite/selftests
|
|
|
++
|
|
|
+ #
|
|
|
+ # Language makefile fragments.
|
|
|
+
|
|
|
+@@ -2001,8 +2005,6 @@ DEVNULL=$(if $(findstring mingw,$(build)),nul,/dev/null)
|
|
|
+ SELFTEST_FLAGS = -nostdinc $(DEVNULL) -S -o $(DEVNULL) \
|
|
|
+ -fself-test=$(srcdir)/testsuite/selftests
|
|
|
+
|
|
|
+-SELFTEST_DEPS = $(GCC_PASSES) stmp-int-hdrs $(srcdir)/testsuite/selftests
|
|
|
+-
|
|
|
+ # Run the selftests during the build once we have a driver and the frontend,
|
|
|
+ # so that self-test failures are caught as early as possible.
|
|
|
+ # Use "s-selftest-FE" to ensure that we only run the selftests if the
|
|
|
+--
|
|
|
+2.25.4
|
|
|
+
|