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authorRusty Russell <rusty@rustcorp.com.au>2007-07-19 01:49:29 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 10:04:53 -0700
commit8ca47e00690914a9e5e6c734baa37c829a2f2fa1 (patch)
tree928350cf70a685428cc5a9779044aa88c5771af9 /Documentation/lguest/Makefile
parentb754416bfe9adac6468e45fba244d77f52048aeb (diff)
lguest: the documentation, example launcher
A brief document describing how to use lguest. Because lguest doesn't have an ABI we also include an example launcher in the Documentation directory. [jmorris@namei.org: Fix up nat example in documentation] Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Signed-off-by: James Morris <jmorris@namei.org> Cc: Matias Zabaljauregui <matias.zabaljauregui@cern.ch> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/lguest/Makefile')
-rw-r--r--Documentation/lguest/Makefile27
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/lguest/Makefile b/Documentation/lguest/Makefile
new file mode 100644
index 000000000000..b9b9427376e9
--- /dev/null
+++ b/Documentation/lguest/Makefile
@@ -0,0 +1,27 @@
+# This creates the demonstration utility "lguest" which runs a Linux guest.
+
+# For those people that have a separate object dir, look there for .config
+KBUILD_OUTPUT := ../..
+ifdef O
+ ifeq ("$(origin O)", "command line")
+ KBUILD_OUTPUT := $(O)
+ endif
+endif
+# We rely on CONFIG_PAGE_OFFSET to know where to put lguest binary.
+include $(KBUILD_OUTPUT)/.config
+LGUEST_GUEST_TOP := ($(CONFIG_PAGE_OFFSET) - 0x08000000)
+
+CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 \
+ -static -DLGUEST_GUEST_TOP="$(LGUEST_GUEST_TOP)" -Wl,-T,lguest.lds
+LDLIBS:=-lz
+
+all: lguest.lds lguest
+
+# The linker script on x86 is so complex the only way of creating one
+# which will link our binary in the right place is to mangle the
+# default one.
+lguest.lds:
+ $(LD) --verbose | awk '/^==========/ { PRINT=1; next; } /SIZEOF_HEADERS/ { gsub(/0x[0-9A-F]*/, "$(LGUEST_GUEST_TOP)") } { if (PRINT) print $$0; }' > $@
+
+clean:
+ rm -f lguest.lds lguest