From: "Marc-André Lureau" <marcandre.lureau@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Daniel P. Berrange" <berrange@redhat.com>
Subject: [Qemu-devel] [PATCH v2 03/13] build-sys: add a rule to print a variable
Date: Fri, 15 Dec 2017 16:06:49 +0100 [thread overview]
Message-ID: <20171215150659.1811-4-marcandre.lureau@redhat.com> (raw)
In-Reply-To: <20171215150659.1811-1-marcandre.lureau@redhat.com>
$ make print-CFLAGS
CFLAGS=-fsanitize=address -Og -g
Trick from various sources:
https://stackoverflow.com/questions/16467718/how-to-print-out-a-variable-in-makefile
https://www.cmcrossroads.com/article/printing-value-makefile-variable
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
Makefile | 5 ++++-
docs/devel/build-system.txt | 13 +++++++++++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 199f39fde1..46bc61004d 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,10 @@ BUILD_DIR=$(CURDIR)
# Before including a proper config-host.mak, assume we are in the source tree
SRC_PATH=.
-UNCHECKED_GOALS := %clean TAGS cscope ctags docker docker-% help
+UNCHECKED_GOALS := %clean TAGS cscope ctags docker docker-% help print-%
+
+print-%:
+ @echo '$*=$($*)'
# All following code might depend on configuration variables
ifneq ($(wildcard config-host.mak),)
diff --git a/docs/devel/build-system.txt b/docs/devel/build-system.txt
index 386ef36ee3..52501f2ad9 100644
--- a/docs/devel/build-system.txt
+++ b/docs/devel/build-system.txt
@@ -510,3 +510,16 @@ default-configs/$TARGET-NAME file as input.
This is the entrypoint used when make recurses to build a single system
or userspace emulator target. It is merely a symlink back to the
Makefile.target in the top level.
+
+
+Useful make targets
+===================
+
+- help
+
+ Print a help message for the most common build targets.
+
+- print-VAR
+
+ Print the value of the variable VAR. Useful for debugging the build
+ system.
--
2.15.1.355.g36791d7216
next prev parent reply other threads:[~2017-12-15 15:07 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-15 15:06 [Qemu-devel] [PATCH v2 00/13] Various build-sys and ASAN related fixes Marc-André Lureau
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 01/13] build-sys: fix qemu-ga -pthread linking Marc-André Lureau
2017-12-15 18:21 ` Philippe Mathieu-Daudé
2017-12-15 18:31 ` Peter Maydell
2017-12-19 15:43 ` Marc-André Lureau
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 02/13] build-sys: silence make by default or V=0 Marc-André Lureau
2017-12-19 16:35 ` Eric Blake
2018-01-02 15:49 ` Marc-André Lureau
2018-01-02 17:33 ` Paolo Bonzini
2018-01-02 17:58 ` Marc-André Lureau
2018-01-02 18:02 ` Paolo Bonzini
2017-12-15 15:06 ` Marc-André Lureau [this message]
2017-12-15 18:28 ` [Qemu-devel] [PATCH v2 03/13] build-sys: add a rule to print a variable Eric Blake
2017-12-19 15:45 ` Marc-André Lureau
2017-12-19 16:31 ` Eric Blake
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 04/13] build-sys: add AddressSanitizer when --enable-debug if possible Marc-André Lureau
2017-12-19 15:48 ` Marc-André Lureau
2018-01-02 15:49 ` Marc-André Lureau
2018-01-02 17:31 ` Paolo Bonzini
2018-01-03 17:52 ` Peter Maydell
2018-01-03 18:02 ` Marc-André Lureau
2018-01-03 18:10 ` Paolo Bonzini
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 05/13] tests: fix check-qobject leak: Marc-André Lureau
2017-12-15 18:17 ` Philippe Mathieu-Daudé
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 06/13] vl: fix direct firmware directories leak Marc-André Lureau
2017-12-15 18:30 ` Eric Blake
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 07/13] readline: add a free function Marc-André Lureau
2017-12-15 18:16 ` Philippe Mathieu-Daudé
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 08/13] tests: fix migration-test leak Marc-André Lureau
2017-12-15 18:08 ` Philippe Mathieu-Daudé
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 09/13] crypto: fix stack-buffer-overflow error Marc-André Lureau
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 10/13] qemu-config: fix leak in query-command-line-options Marc-André Lureau
2017-12-15 18:35 ` Eric Blake
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 11/13] tests: fix qmp-test leak Marc-André Lureau
2017-12-15 18:11 ` Philippe Mathieu-Daudé
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 12/13] ucontext: annotate coroutine stack for ASAN Marc-André Lureau
2017-12-15 18:10 ` Philippe Mathieu-Daudé
2017-12-15 18:39 ` Eric Blake
2017-12-18 13:30 ` Stefan Hajnoczi
2017-12-15 15:06 ` [Qemu-devel] [PATCH v2 13/13] tests: fix coroutine leak in /basic/entered Marc-André Lureau
2017-12-18 13:25 ` Stefan Hajnoczi
2017-12-15 15:22 ` [Qemu-devel] [PATCH v2 00/13] Various build-sys and ASAN related fixes Marc-André Lureau
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