diff --git a/aclocal.m4 b/aclocal.m4
index 0b0d9c29c..99bfe9516 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -218,17 +218,6 @@ AC_SUBST(strip_dynamic)
 # AC_MSG_RESULT($strip_dynamic)
 ])# AX_LD_RDYNAMIC
 
-# AX_CPP_PRECOMP
-# --------------
-AC_DEFUN([AX_CPP_PRECOMP],
-[# Darwin requires -no-cpp-precomp
-case "${host}" in
-    *-*-darwin*)
-        CPPFLAGS="-no-cpp-precomp $CPPFLAGS"
-        CFLAGS="-no-cpp-precomp $CFLAGS"
-        ;;
-esac
-])# AX_CPP_PRECOMP
 
 # AX_C99_STRTOD
 # -------------
diff --git a/configure.in b/configure.in
index 086bd9325..b50cd72a5 100644
--- a/configure.in
+++ b/configure.in
@@ -214,9 +214,6 @@ AX_LD_EXTRALIBS
 # CFLAGS inherited by cadpli/Makefile?
 AX_C_PICFLAG
 
-# may modify CPPFLAGS and CFLAGS
-AX_CPP_PRECOMP
-
 # may modify LDFLAGS
 AX_C99_STRTOD