making all mod_hash

In file included from /usr/include/time.h:35,

                 from /root/freeswitch/libs/esl/src/include/esl.h:159,

                 from src/esl.c:34:

/usr/include/sys/feature_tests.h:357:2: error: #error "Compiler or options invalid; UNIX 03 and POSIX.1-2001 applications       require the use of c99"

make[5]: *** [src/esl.o] Error 1

make[4]: *** [/root/freeswitch/libs/esl/libesl.so] Error 2

make[3]: *** [mod_hash-all] Error 1

make[2]: *** [all-recursive] Error 1

cd /root/freeswitch/libs/spandsp && make -j1

make[1]: Entering directory `/root/freeswitch/libs/spandsp'

Making all in src

make[2]: Entering directory `/root/freeswitch/libs/spandsp/src'

make  all-am

make[3]: Entering directory `/root/freeswitch/libs/spandsp/src'

gcc -o make_modem_filter ../src/make_modem_filter.c ../src/filter_tools.c -DHAVE_CONFIG_H -I../src -lm

/var/tmp//ccpvaWbv.o: In function `make_tx_filter':

make_modem_filter.c:(.text+0x131): undefined reference to `__tgmath_fabs'

make_modem_filter.c:(.text+0x159): undefined reference to `__tgmath_fabs'

/var/tmp//ccpvaWbv.o: In function `make_rx_filter':

make_modem_filter.c:(.text+0x582): undefined reference to `__tgmath_fabs'

make_modem_filter.c:(.text+0x5aa): undefined reference to `__tgmath_fabs'

make_modem_filter.c:(.text+0x726): undefined reference to `__tgmath_cos'

make_modem_filter.c:(.text+0x761): undefined reference to `__tgmath_sin'

/var/tmp//ccqvaWbv.o: In function `expj':

filter_tools.c:(.text+0x3a5): undefined reference to `__tgmath_sin'

filter_tools.c:(.text+0x3bb): undefined reference to `__tgmath_cos'

/var/tmp//ccqvaWbv.o: In function `compute_raised_cosine_filter':

filter_tools.c:(.text+0x542): undefined reference to `__tgmath_cos'

filter_tools.c:(.text+0x634): undefined reference to `__tgmath_sqrt'

filter_tools.c:(.text+0x6a5): undefined reference to `__tgmath_sin'

/var/tmp//ccqvaWbv.o: In function `apply_hamming_window':

filter_tools.c:(.text+0x8b8): undefined reference to `__tgmath_cos'

/var/tmp//ccqvaWbv.o: In function `truncate_coeffs':

filter_tools.c:(.text+0x94b): undefined reference to `__tgmath_pow'

/var/tmp//ccqvaWbv.o: In function `fix':

filter_tools.c:(.text+0xa29): undefined reference to `__tgmath_floor'

filter_tools.c:(.text+0xa47): undefined reference to `__tgmath_floor'

collect2: ld returned 1 exit status

make[3]: *** [make_modem_filter] Error 1

make[3]: Leaving directory `/root/freeswitch/libs/spandsp/src'

make[2]: *** [all] Error 2

make[2]: Leaving directory `/root/freeswitch/libs/spandsp/src'

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory `/root/freeswitch/libs/spandsp'

make: *** [/root/freeswitch/libs/spandsp/src/libspandsp.la] Error 2