Index: libcfa/prelude/Makefile.am
===================================================================
--- libcfa/prelude/Makefile.am	(revision a9fb796f56bcdcc50c4cfcea5f2ae6641c3b82b2)
+++ libcfa/prelude/Makefile.am	(revision e523b07aa19c5a8ce7a69a9d4e9ff161b3fbbedf)
@@ -20,5 +20,5 @@
 # put into lib for now
 cfalibdir = ${CFA_LIBDIR}
-cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cf bootloader.c
+cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c
 
 CC = @CFACC@
@@ -43,5 +43,5 @@
 	${AM_V_GEN}gcc -I${srcdir} -E ${srcdir}/prototypes.c | awk -f ${srcdir}/prototypes.awk > $@
 
-prelude.cf : prelude-gen.cc
+prelude.cfa : prelude-gen.cc
 	${AM_V_GEN}${CXX} ${AM_CXXFLAGS} ${CXXFLAGS} ${AM_CFLAGS} ${<} -o prelude-gen -Wall -Wextra -O2 -g -std=c++14
 	@./prelude-gen > $@
@@ -59,5 +59,5 @@
 include $(DEPDIR)/builtins.Po
 
-bootloader.c : ${srcdir}/bootloader.cf prelude.cf extras.cf gcc-builtins.cf builtins.cf @CFACPP@
+bootloader.c : ${srcdir}/bootloader.cf prelude.cfa extras.cf gcc-builtins.cf builtins.cf @CFACPP@
 	${AM_V_GEN}@CFACPP@ --prelude-dir=${builddir} -tpm ${srcdir}/bootloader.cf $@  # use src/cfa-cpp as not in lib until after install
 
@@ -65,4 +65,4 @@
 	rm -rf $(DEPDIR)
 
-MOSTLYCLEANFILES = bootloader.c builtins.cf extras.cf gcc-builtins.c gcc-builtins.cf prelude.cf
+MOSTLYCLEANFILES = bootloader.c builtins.cf extras.cf gcc-builtins.c gcc-builtins.cf prelude.cfa
 MAINTAINERCLEANFILES = ${addprefix ${libdir}/,${cfalib_DATA}} ${addprefix ${libdir}/,${lib_LIBRARIES}}
Index: libcfa/prelude/Makefile.in
===================================================================
--- libcfa/prelude/Makefile.in	(revision a9fb796f56bcdcc50c4cfcea5f2ae6641c3b82b2)
+++ libcfa/prelude/Makefile.in	(revision e523b07aa19c5a8ce7a69a9d4e9ff161b3fbbedf)
@@ -174,4 +174,5 @@
 CFLAGS = @CFLAGS@
 CONFIGURATION = @CONFIGURATION@
+CONFIG_BUILDLIB = @CONFIG_BUILDLIB@
 CONFIG_CFAFLAGS = @CONFIG_CFAFLAGS@
 CONFIG_CFLAGS = @CONFIG_CFLAGS@
@@ -263,8 +264,8 @@
 # put into lib for now
 cfalibdir = ${CFA_LIBDIR}
-cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cf bootloader.c
+cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c
 AM_CFLAGS = -g -Wall -Wno-unused-function @ARCH_FLAGS@ @CONFIG_CFLAGS@
 AM_CFAFLAGS = @CONFIG_CFAFLAGS@
-MOSTLYCLEANFILES = bootloader.c builtins.cf extras.cf gcc-builtins.c gcc-builtins.cf prelude.cf
+MOSTLYCLEANFILES = bootloader.c builtins.cf extras.cf gcc-builtins.c gcc-builtins.cf prelude.cfa
 MAINTAINERCLEANFILES = ${addprefix ${libdir}/,${cfalib_DATA}} ${addprefix ${libdir}/,${lib_LIBRARIES}}
 all: all-am
@@ -498,5 +499,5 @@
 	${AM_V_GEN}gcc -I${srcdir} -E ${srcdir}/prototypes.c | awk -f ${srcdir}/prototypes.awk > $@
 
-prelude.cf : prelude-gen.cc
+prelude.cfa : prelude-gen.cc
 	${AM_V_GEN}${CXX} ${AM_CXXFLAGS} ${CXXFLAGS} ${AM_CFLAGS} ${<} -o prelude-gen -Wall -Wextra -O2 -g -std=c++14
 	@./prelude-gen > $@
@@ -514,5 +515,5 @@
 include $(DEPDIR)/builtins.Po
 
-bootloader.c : ${srcdir}/bootloader.cf prelude.cf extras.cf gcc-builtins.cf builtins.cf @CFACPP@
+bootloader.c : ${srcdir}/bootloader.cf prelude.cfa extras.cf gcc-builtins.cf builtins.cf @CFACPP@
 	${AM_V_GEN}@CFACPP@ --prelude-dir=${builddir} -tpm ${srcdir}/bootloader.cf $@  # use src/cfa-cpp as not in lib until after install
 
Index: libcfa/prelude/prelude-gen.cc
===================================================================
--- libcfa/prelude/prelude-gen.cc	(revision a9fb796f56bcdcc50c4cfcea5f2ae6641c3b82b2)
+++ libcfa/prelude/prelude-gen.cc	(revision e523b07aa19c5a8ce7a69a9d4e9ff161b3fbbedf)
@@ -142,5 +142,5 @@
 
 int main() {
-	cout << "# 2 \"prelude.cf\"  // needed for error messages from this file" << endl;
+	cout << "# 2 \"prelude.cfa\"  // needed for error messages from this file" << endl;
 	cout << "trait sized(dtype T) {};" << endl;