apptrk: replace += with append to ensure CFLAGS is appended correctly

Fix the following build error:
Source/Linux_PA/linux_ppc_targimpl.c:19:24: fatal error: trk_prefix.h: No such file or directory

Signed-off-by: Zhenhua Luo <zhenhua.luo@freescale.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 4 insertions, 4 deletions

diff --git a/recipes-bsp/apptrk/apptrk_git.bb b/recipes-bsp/apptrk/apptrk_git.bb
index cef12927..6cb8cfce 100644
--- a/recipes-bsp/apptrk/apptrk_git.bb
+++ b/recipes-bsp/apptrk/apptrk_git.bb
@@ -17,10 +17,10 @@ S = "${WORKDIR}/git"
 
 EXTRA_OEMAKE_qoriq-arm = "ARCH=arm"
 
-CFLAGS += "-I${STAGING_INCDIR} -ISource/Linux -ISource/Portable"
-CFLAGS_qoriq-arm += "-ISource/Linux_ARM -ISource/ARM"
-CFLAGS_qoriq-ppc += "-ISource/Linux_PA -ISource/PA -DPPC"
-CFLAGS_powerpc64 += "-DENABLE_64BIT_SUPPORT"
+CFLAGS_append = " -I${STAGING_INCDIR} -ISource/Linux -ISource/Portable"
+CFLAGS_append_qoriq-arm = "-ISource/Linux_ARM -ISource/ARM"
+CFLAGS_append_qoriq-ppc += "-ISource/Linux_PA -ISource/PA -DPPC"
+CFLAGS_append_powerpc64 += "-DENABLE_64BIT_SUPPORT"
 
 do_install() {
         oe_runmake install DESTDIR=${D}