disas/libvixl: prepend the include path of libvixl header files

Currently the Makefile of disas/libvixl appends
-I$(SRC_PATH)/disas/libvixl to QEMU_CFLAGS. As a consequence C++ files
that #include "utils.h", such as disas/libvixl/a64/instructions-a64.cc,
are going to look for utils.h on all the other include paths first.

When building QEMU as part of the Xen make system, another unrelated
utils.h file is going to be chosen for inclusion, causing a build
failure:

In file included from disas/libvixl/a64/instructions-a64.cc:27:0:
/qemu/disas/libvixl/a64/instructions-a64.h:88:64: error:
'rawbits_to_float' was not declared in this scope
 const float kFP32PositiveInfinity = rawbits_to_float(0x7f800000);

Fix the problem by prepending (rather than appending) the libvixl
include path to QEMU_CFLAGS.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 834fb1b269f4c9eb0ffc058fd6ab5a018c3bce1f)

*added 2.0-specific fixup from Stefano in disas/Makefile.obj due to
 lack of 849d8284

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/disas/Makefile.objs b/disas/Makefile.objs
index 41c237424aabebfe069833bb150f6a1c80cf748e..a70c5920914622ca0441fa100cf47163ce2abf8d 100644 (file)
--- a/disas/Makefile.objs
+++ b/disas/Makefile.objs
@@ -4,7 +4,7 @@ common-obj-$(CONFIG_ARM_DIS) += arm.o
 common-obj-$(CONFIG_ARM_A64_DIS) += arm-a64.o
 common-obj-$(CONFIG_ARM_A64_DIS) += libvixl/
 libvixldir = $(SRC_PATH)/disas/libvixl
-$(obj)/arm-a64.o: QEMU_CFLAGS += -I$(libvixldir)
+$(obj)/arm-a64.o: QEMU_CFLAGS := -I$(libvixldir) $(QEMU_CFLAGS)
 common-obj-$(CONFIG_CRIS_DIS) += cris.o
 common-obj-$(CONFIG_HPPA_DIS) += hppa.o
 common-obj-$(CONFIG_I386_DIS) += i386.o

diff --git a/disas/libvixl/Makefile.objs b/disas/libvixl/Makefile.objs
index 0adb3ced7b731695086eff1e2f38cd9d0c5f4fd8..17e6565d10a08051057b0f6b2f29c8714303b49a 100644 (file)
--- a/disas/libvixl/Makefile.objs
+++ b/disas/libvixl/Makefile.objs
@@ -3,6 +3,6 @@ libvixl_OBJS = utils.o \
                a64/decoder-a64.o \
                a64/disasm-a64.o
 
-$(addprefix $(obj)/,$(libvixl_OBJS)): QEMU_CFLAGS += -I$(SRC_PATH)/disas/libvixl
+$(addprefix $(obj)/,$(libvixl_OBJS)): QEMU_CFLAGS := -I$(SRC_PATH)/disas/libvixl $(QEMU_CFLAGS)
 
 common-obj-$(CONFIG_ARM_A64_DIS) += $(libvixl_OBJS)