Xen users - Jul 2014 - qemu-nbd.c:223:5: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement]

Hi,

i try to build the xen-tools 4.5 unstable under tinycorelinx and i need 
to set some compilerflags,


export CFLAGS="-mtune=generic -Os -pipe"
export CXXFLAGS="-mtune=generic -Os -pipe"
export LDFLAGS="-Wl,-O1"

but when qemu comes to be build i get this :

qemu-nbd.c: In function 'tcp_socket_incoming':
qemu-nbd.c:223:5: error: ISO C90 forbids mixed declarations and code 
[-Werror=declaration-after-statement]
cc1: all warnings being treated as errors
make[3]: *** [qemu-nbd.o] Error 1
make[3]: *** Waiting for unfinished jobs....
block.c: In function 'bdrv_reopen_queue':
block.c:1485:5: error: ISO C90 forbids mixed declarations and code 
[-Werror=declaration-after-statement]
block.c: In function 'bdrv_aio_flush':
block.c:4604:5: error: ISO C90 forbids mixed declarations and code 
[-Werror=declaration-after-statement]
cc1: all warnings being treated as errors
make[3]: *** [block.o] Error 1
make[3]: Leaving directory `/mnt/xvda1/xen/tools/qemu-xen-dir-remote'
make[2]: *** [subdir-all-qemu-xen-dir] Error 2
make[2]: Leaving directory `/mnt/xvda1/xen/tools'
make[1]: *** [subdirs-install] Error 2
make[1]: Leaving directory `/mnt/xvda1/xen/tools'
make: *** [install-tools] Error 2

afer reading around and doing some research , then if i am right i need 
to set "EXTRA_CFLAGS="-std=gnu99" . i tried to export this EXTRA
Flag
also to the envoirement but no luck.

does anyone knows how can i resolve this problem ?

best regard
bobbi