diff --git a/include/site/linux b/include/site/linux
index ca4fd29c9b..ac34d30f6c 100644
--- a/include/site/linux
+++ b/include/site/linux
@@ -15,6 +15,7 @@ ac_cv_func_getcwd=yes
 ac_cv_func_getdomainname=yes
 ac_cv_func_getpgrp_void=yes
 ac_cv_func_getpwuid_r=yes
+ac_cv_func_gettimeofday=yes
 ac_cv_func_index=yes
 ac_cv_func_lstat_dereferences_slashed_symlink=yes
 ac_cv_func_lstat_empty_string_bug=no
@@ -25,6 +26,7 @@ ac_cv_func_memcmp_clean=yes
 ac_cv_func_memcmp_working=yes
 ac_cv_func_posix_getgrgid_r=yes
 ac_cv_func_posix_getpwuid_r=yes
+ac_cv_func_psignal=yes
 ac_cv_func_pthread_key_delete=yes
 ac_cv_func_realloc_0_nonnull=yes
 ac_cv_func_realloc_works=yes