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[Qemu-devel] [PATCH] work around make bug for *-user builds


From: Nathan Froyd
Subject: [Qemu-devel] [PATCH] work around make bug for *-user builds
Date: Tue, 27 Apr 2010 08:07:20 -0700

When I try to build a linux-user target, I get:

Makefile:84: *** missing `endif'.  Stop.

As best as I can figure out, what happens is that when we call eval from
set-vpath, make is checking that there are no dangling conditionals at
the end of the input.  But in this case make is doing the wrong thing:
the input is just what gets fed to eval, not the wider Makefile from
which eval was called.

To restore buildability of the *-user configs, move calls to set-vpath
out from under ifdefs, and conditionally provide a path for set-vpath.

Signed-off-by: Nathan Froyd <address@hidden>
---
 Makefile.target |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/Makefile.target b/Makefile.target
index 65beed5..e1c0f4a 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -79,9 +79,11 @@ signal.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
 #########################################################
 # Linux user emulator target
 
-ifdef CONFIG_LINUX_USER
+# This call (sans `if') ought to be under the ifdef below, but that
+# triggers bugs in make.
+$(call set-vpath,$(if 
$CONFIG_LINUX_USER,$(SRC_PATH)/linux-user:$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR)))
 
-$(call set-vpath, 
$(SRC_PATH)/linux-user:$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR))
+ifdef CONFIG_LINUX_USER
 
 QEMU_CFLAGS+=-I$(SRC_PATH)/linux-user 
-I$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR)
 obj-y = main.o syscall.o strace.o mmap.o signal.o thunk.o \
@@ -111,9 +113,9 @@ endif #CONFIG_LINUX_USER
 #########################################################
 # Darwin user emulator target
 
-ifdef CONFIG_DARWIN_USER
+$(call set-vpath,$(if $CONFIG_DARWIN_USER,$(SRC_PATH)/darwin-user))
 
-$(call set-vpath, $(SRC_PATH)/darwin-user)
+ifdef CONFIG_DARWIN_USER
 
 QEMU_CFLAGS+=-I$(SRC_PATH)/darwin-user -I$(SRC_PATH)/darwin-user/$(TARGET_ARCH)
 
@@ -138,9 +140,9 @@ endif #CONFIG_DARWIN_USER
 #########################################################
 # BSD user emulator target
 
-ifdef CONFIG_BSD_USER
+$(call set-vpath,$(if $CONFIG_BSD_USER,$(SRC_PATH)/bsd-user))
 
-$(call set-vpath, $(SRC_PATH)/bsd-user)
+ifdef CONFIG_BSD_USER
 
 QEMU_CFLAGS+=-I$(SRC_PATH)/bsd-user -I$(SRC_PATH)/bsd-user/$(TARGET_ARCH)
 
-- 
1.6.3.2





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