diff --git a/common/environment/configure/autoconf_cache/common-linux b/common/environment/configure/autoconf_cache/common-linux
index 4c2eded065b..deca7f6e783 100644
--- a/common/environment/configure/autoconf_cache/common-linux
+++ b/common/environment/configure/autoconf_cache/common-linux
@@ -35,6 +35,9 @@ bash_cv_job_control_missing=${bash_cv_job_control_missing=present}
 bash_cv_sys_named_pipes=${bash_cv_sys_named_pipes=present}
 bash_cv_unusable_rtsigs=${bash_cv_unusable_rtsigs=no}
 
+# cgdb
+ac_cv_file__dev_ptmx=yes
+
 # coreutils
 gl_cv_func_fstatat_zero_flag=${gl_cv_func_fstatat_zero_flag=yes}