diff --git a/midipix.env b/midipix.env
index 0fa81be..5fca956 100644
--- a/midipix.env
+++ b/midipix.env
@@ -240,6 +240,7 @@ gl_cv_func_chown_slash_works=yes
 gl_cv_func_exp2l_ieee=yes
 gl_cv_func_expm1_ieee=yes
 gl_cv_func_fchownat_nofollow_works=yes
+gl_cv_func_fcntl_f_dupfd_cloexec=yes
 gl_cv_func_fcntl_f_dupfd_works=yes
 gl_cv_func_fdopendir_works=yes
 gl_cv_func_fflush_stdin=yes
@@ -250,6 +251,8 @@ gl_cv_func_fma_works=yes
 gl_cv_func_fmodf_ieee=yes
 gl_cv_func_fmod_ieee=yes
 gl_cv_func_fmodl_ieee=yes
+gl_cv_func_fopen_mode_e=yes
+gl_cv_func_fopen_mode_x=yes
 gl_cv_func_fpurge_works=yes
 gl_cv_func_fseeko=yes
 gl_cv_func_futimens_works=yes