diff options
| author | Michael Marineau <michael.marineau@coreos.com> | 2015-08-09 00:02:55 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-09 15:34:54 +0200 |
| commit | 12a1ddc160cb6a73e8a6c319f3962a20da2cd22f (patch) | |
| tree | 8e94723d2bd220221cb19b67caae76cc7b1a31d1 /Makefile.target | |
| parent | 3c9589e180d98cdadb143bd2a792fb9d19d9aec6 (diff) | |
Makefile.target: include top level build dir in vpath
Using ccache with CCACHE_BASEDIR set to $(SRC_PATH) or a parent will
rewrite all absolute paths to relative paths. This interacts poorly with
QEMU's two-level build directory scheme. For example, lets say
BUILD_DIR=$(SRC_PATH)/build so build/blockdev.d will contain:
blockdev.o: ../blockdev.c ../include/sysemu/block-backend.h \
Now the target build under build/x86_64-softmmu or similar will depend
on ../blockdev.o which in turn will get make to source ../blockdev.d to
check its dependencies. Since make always considers paths relative to
the current working directory rather than the makefile the path appeared
in the relative path to ../blockdev.c is useless.
This change simply adds the top level build directory to vpath so paths
relative to the source directory, top build directory, and target build
directory all work just fine.
Signed-off-by: Michael Marineau <michael.marineau@coreos.com>
Message-Id: <1439103775-11836-1-git-send-email-michael.marineau@coreos.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Makefile.target')
| -rw-r--r-- | Makefile.target | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.target b/Makefile.target index 3e7aafd72d..dc322942f4 100644 --- a/Makefile.target +++ b/Makefile.target @@ -7,7 +7,7 @@ include config-target.mak include config-devices.mak include $(SRC_PATH)/rules.mak -$(call set-vpath, $(SRC_PATH)) +$(call set-vpath, $(SRC_PATH):$(BUILD_DIR)) ifdef CONFIG_LINUX QEMU_CFLAGS += -I../linux-headers endif |