Index: src/Makefile.am
===================================================================
--- src/Makefile.am	(revision 0e0f128c9f975b8eb3f6b0870c12c639668ef24c)
+++ src/Makefile.am	(revision 7b3a6e63ee6eed4ce07650549824ebb9065b01d2)
@@ -16,5 +16,5 @@
 
 # create object files in directory with source files
-AUTOMAKE_OPTIONS = subdir-objects
+AUTOMAKE_OPTIONS = foreign subdir-objects
 
 SRC = main.cc \
@@ -48,6 +48,6 @@
 ___driver_cfa_cpp_LDADD = -ldl			# yywrap
 
-AM_CXXFLAGS = -Wno-deprecated -Wall -Wextra -DDEBUG_ALL -I./Parser -I$(srcdir)/Parser -I$(srcdir)/include -DYY_NO_INPUT -O2 -g -std=c++14
-AM_LDFLAGS = -Xlinker -export-dynamic
+AM_CXXFLAGS = @HOST_FLAGS@ -Wno-deprecated -Wall -Wextra -DDEBUG_ALL -I./Parser -I$(srcdir)/Parser -I$(srcdir)/include -DYY_NO_INPUT -O2 -g -std=c++14
+AM_LDFLAGS  = @HOST_FLAGS@ -Xlinker -export-dynamic
 
 MAINTAINERCLEANFILES += ${libdir}/${notdir ${cfa_cpplib_PROGRAMS}}
Index: src/Makefile.in
===================================================================
--- src/Makefile.in	(revision 0e0f128c9f975b8eb3f6b0870c12c639668ef24c)
+++ src/Makefile.in	(revision 7b3a6e63ee6eed4ce07650549824ebb9065b01d2)
@@ -358,4 +358,5 @@
 EXEEXT = @EXEEXT@
 GREP = @GREP@
+HOST_FLAGS = @HOST_FLAGS@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
@@ -445,5 +446,5 @@
 
 # create object files in directory with source files
-AUTOMAKE_OPTIONS = subdir-objects
+AUTOMAKE_OPTIONS = foreign subdir-objects
 SRC = main.cc MakeLibCfa.cc CompilationState.cc CodeGen/Generate.cc \
 	CodeGen/CodeGenerator.cc CodeGen/GenType.cc \
@@ -508,6 +509,6 @@
 ___driver_cfa_cpp_SOURCES = $(SRC)
 ___driver_cfa_cpp_LDADD = -ldl			# yywrap
-AM_CXXFLAGS = -Wno-deprecated -Wall -Wextra -DDEBUG_ALL -I./Parser -I$(srcdir)/Parser -I$(srcdir)/include -DYY_NO_INPUT -O2 -g -std=c++14
-AM_LDFLAGS = -Xlinker -export-dynamic
+AM_CXXFLAGS = @HOST_FLAGS@ -Wno-deprecated -Wall -Wextra -DDEBUG_ALL -I./Parser -I$(srcdir)/Parser -I$(srcdir)/include -DYY_NO_INPUT -O2 -g -std=c++14
+AM_LDFLAGS = @HOST_FLAGS@ -Xlinker -export-dynamic
 all: $(BUILT_SOURCES)
 	$(MAKE) $(AM_MAKEFLAGS) all-am