bluez: Fix invalid-pp-token warning found with clang

We add FIRMWARE_DIR via CFLAGS using escapes for string and clang
option parser flags it

<command line>:4:23: warning: missing terminating '"' character [-Winvalid-pp-token]
    4 | #define FIRMWARE_DIR \"/usr/lib/firmware\"
      |                       ^

emitting this warning during configure means some tests fail wrongly. e.g.
test for enable -fPIC -DPIC, which results in textrels in libbbluetooth.so

Pass the string definition using single quotes to avoid the shell
"eating" the quotes and other characters

This works well across gcc and clang

(From OE-Core rev: 23a87f27b1837bd35bea356f0a10816fb35826f2)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/recipes-connectivity/bluez5/bluez5.inc b/meta/recipes-connectivity/bluez5/bluez5.inc
index 3b414433cf..48aeff0aee 100644
--- a/meta/recipes-connectivity/bluez5/bluez5.inc
+++ b/meta/recipes-connectivity/bluez5/bluez5.inc
@@ -81,7 +81,7 @@ EXTRA_OECONF = "\
   --without-zsh-completion-dir \
 "
 
-CFLAGS += "-DFIRMWARE_DIR=\\"${nonarch_base_libdir}/firmware\\""
+CFLAGS += "-DFIRMWARE_DIR='"${nonarch_base_libdir}/firmware"'"
 
 # bluez5 builds a large number of useful utilities but does not
 # install them.  Specify which ones we want put into ${PN}-noinst-tools.