diff --git a/project/config/cfgdefs.sh b/project/config/cfgdefs.sh
index b0e7270..135f10e 100644
--- a/project/config/cfgdefs.sh
+++ b/project/config/cfgdefs.sh
@@ -152,6 +152,7 @@ cfgdefs_perform_common_tests()
 	cfgtest_header_presence 'endian.h'
 	cfgtest_header_presence 'net/if.h'
 	cfgtest_header_presence 'sched.h'
+	cfgtest_header_presence 'spawn.h'
 	cfgtest_header_presence 'sys/ioctl.h'
 	cfgtest_header_presence 'sys/sendfile.h'
 	cfgtest_header_presence 'sys/syscall.h'
@@ -169,6 +170,9 @@ cfgdefs_perform_common_tests()
 	cfgtest_interface_presence 'pwritev'
 	cfgtest_interface_presence 'pwritev2'
 
+	mb_cfgtest_headers='spawn.h'
+	cfgtest_interface_presence 'posix_spawn'
+
 	mb_cfgtest_headers='pthread.h time.h'
 	cfgtest_interface_presence 'pthread_getcpuclockid'