--- a/hdsploader/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/hdsploader/Makefile.am	2019-06-28 00:43:41.557803832 +0800
@@ -32,5 +32,14 @@
 	     tobin.c
 CLEANFILES = $(dsp_hex_files)
 
-$(dsp_hex_files): tobin
-	./tobin
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(tobin_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(tobin_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(tobin_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+tobin$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(dsp_hex_files): tobin$(BUILD_EXEEXT)
+	./$<
--- a/m4/ax_prog_cc_for_build.m4	2019-06-27 15:50:02.274134717 +0800
+++ b/m4/ax_prog_cc_for_build.m4	2019-06-28 01:32:45.088117432 +0800
@@ -0,0 +1,125 @@
+# ===========================================================================
+#   https://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PROG_CC_FOR_BUILD
+#
+# DESCRIPTION
+#
+#   This macro searches for a C compiler that generates native executables,
+#   that is a C compiler that surely is not a cross-compiler. This can be
+#   useful if you have to generate source code at compile-time like for
+#   example GCC does.
+#
+#   The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything
+#   needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD).
+#   The value of these variables can be overridden by the user by specifying
+#   a compiler with an environment variable (like you do for standard CC).
+#
+#   It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object
+#   file extensions for the build platform, and GCC_FOR_BUILD to `yes' if
+#   the compiler we found is GCC. All these variables but GCC_FOR_BUILD are
+#   substituted in the Makefile.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 9
+
+AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD])
+AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_PROG_CPP])dnl
+AC_REQUIRE([AC_EXEEXT])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+dnl Use the standard macros, but make them use other variable names
+dnl
+pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl
+pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl
+pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl
+pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl
+pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl
+pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl
+pushdef([ac_cv_objext], ac_cv_build_objext)dnl
+pushdef([ac_exeext], ac_build_exeext)dnl
+pushdef([ac_objext], ac_build_objext)dnl
+pushdef([CC], CC_FOR_BUILD)dnl
+pushdef([CPP], CPP_FOR_BUILD)dnl
+pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl
+pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl
+pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl
+pushdef([host], build)dnl
+pushdef([host_alias], build_alias)dnl
+pushdef([host_cpu], build_cpu)dnl
+pushdef([host_vendor], build_vendor)dnl
+pushdef([host_os], build_os)dnl
+pushdef([ac_cv_host], ac_cv_build)dnl
+pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl
+pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl
+pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl
+pushdef([ac_cv_host_os], ac_cv_build_os)dnl
+pushdef([ac_cpp], ac_build_cpp)dnl
+pushdef([ac_compile], ac_build_compile)dnl
+pushdef([ac_link], ac_build_link)dnl
+
+save_cross_compiling=$cross_compiling
+save_ac_tool_prefix=$ac_tool_prefix
+cross_compiling=no
+ac_tool_prefix=
+
+AC_PROG_CC
+AC_PROG_CPP
+AC_EXEEXT
+
+ac_tool_prefix=$save_ac_tool_prefix
+cross_compiling=$save_cross_compiling
+
+dnl Restore the old definitions
+dnl
+popdef([ac_link])dnl
+popdef([ac_compile])dnl
+popdef([ac_cpp])dnl
+popdef([ac_cv_host_os])dnl
+popdef([ac_cv_host_vendor])dnl
+popdef([ac_cv_host_cpu])dnl
+popdef([ac_cv_host_alias])dnl
+popdef([ac_cv_host])dnl
+popdef([host_os])dnl
+popdef([host_vendor])dnl
+popdef([host_cpu])dnl
+popdef([host_alias])dnl
+popdef([host])dnl
+popdef([LDFLAGS])dnl
+popdef([CPPFLAGS])dnl
+popdef([CFLAGS])dnl
+popdef([CPP])dnl
+popdef([CC])dnl
+popdef([ac_objext])dnl
+popdef([ac_exeext])dnl
+popdef([ac_cv_objext])dnl
+popdef([ac_cv_exeext])dnl
+popdef([ac_cv_prog_cc_g])dnl
+popdef([ac_cv_prog_cc_cross])dnl
+popdef([ac_cv_prog_cc_works])dnl
+popdef([ac_cv_prog_gcc])dnl
+popdef([ac_cv_prog_CPP])dnl
+
+dnl Finally, set Makefile variables
+dnl
+BUILD_EXEEXT=$ac_build_exeext
+BUILD_OBJEXT=$ac_build_objext
+AC_SUBST(BUILD_EXEEXT)dnl
+AC_SUBST(BUILD_OBJEXT)dnl
+AC_SUBST([CFLAGS_FOR_BUILD])dnl
+AC_SUBST([CPPFLAGS_FOR_BUILD])dnl
+AC_SUBST([LDFLAGS_FOR_BUILD])dnl
+])
--- a/configure.ac	2019-06-27 23:58:31.045413144 +0800
+++ b/configure.ac	2019-06-28 01:45:36.511771656 +0800
@@ -1,6 +1,8 @@
 AC_PREREQ(2.59)
 AC_INIT(alsa-firmware, 1.0.29)
+AC_CONFIG_MACRO_DIR([m4])
 AC_PROG_CC
+AC_PROG_CC_FOR_BUILD
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_HEADER_STDC
--- a/vxloader/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/vxloader/Makefile.am	2019-06-28 01:55:19.525947146 +0800
@@ -43,5 +43,14 @@
 hotplugfw_DATA = 
 endif
 
-%.xlx: %.rbt toxlx
-	./toxlx < $< > $@
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(toxlx_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(toxlx_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(toxlx_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+toxlx$(BUILD_EXEEXT): $(toxlx_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+%.xlx: %.rbt toxlx$(BUILD_EXEEXT)
+	./toxlx$(BUILD_EXEEXT) < $< > $@
--- a/echoaudio/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/echoaudio/Makefile.am	2019-06-28 02:00:00.579426080 +0800
@@ -74,33 +74,42 @@
 hotplugfw_DATA = 
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer DSP/LoaderDSP.c loader_dsp.fw
-	./fw_writer DSP/Darla20DSP.c darla20_dsp.fw
-	./fw_writer DSP/Gina20DSP.c gina20_dsp.fw
-	./fw_writer DSP/Layla20DSP.c layla20_dsp.fw
-	./fw_writer ASIC/LaylaASIC.c layla20_asic.fw
-	./fw_writer DSP/Darla24DSP.c darla24_dsp.fw
-	./fw_writer DSP/Gina24DSP.c gina24_301_dsp.fw
-	./fw_writer ASIC/Gina24ASIC.c gina24_301_asic.fw
-	./fw_writer DSP/Gina24_361DSP.c gina24_361_dsp.fw
-	./fw_writer ASIC/Gina24ASIC_361.c gina24_361_asic.fw
-	./fw_writer DSP/Layla24DSP.c layla24_dsp.fw
-	./fw_writer ASIC/Layla24_1ASIC.c layla24_1_asic.fw
-	./fw_writer ASIC/Layla24_2A_ASIC.c layla24_2A_asic.fw
-	./fw_writer ASIC/Layla24_2S_ASIC.c layla24_2S_asic.fw
-	./fw_writer DSP/MonaDSP.c mona_301_dsp.fw
-	./fw_writer ASIC/Mona1ASIC48.c mona_301_1_asic_48.fw
-	./fw_writer ASIC/Mona1ASIC96.c mona_301_1_asic_96.fw
-	./fw_writer DSP/Mona361DSP.c mona_361_dsp.fw
-	./fw_writer ASIC/Mona1ASIC48_361.c mona_361_1_asic_48.fw
-	./fw_writer ASIC/Mona1ASIC96_361.c mona_361_1_asic_96.fw
-	./fw_writer ASIC/Mona2ASIC.c mona_2_asic.fw
-	./fw_writer DSP/MiaDSP.c mia_dsp.fw
-	./fw_writer DSP/Echo3gDSP.c echo3g_dsp.fw
-	./fw_writer ASIC/3G_ASIC.c 3g_asic.fw
-	./fw_writer DSP/IndigoDSP.c indigo_dsp.fw
-	./fw_writer DSP/IndigoIODSP.c indigo_io_dsp.fw
-	./fw_writer DSP/IndigoIOxDSP.c indigo_iox_dsp.fw
-	./fw_writer DSP/IndigoDJDSP.c indigo_dj_dsp.fw
-	./fw_writer DSP/IndigoDJxDSP.c indigo_djx_dsp.fw
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT) DSP/LoaderDSP.c loader_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Darla20DSP.c darla20_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Gina20DSP.c gina20_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Layla20DSP.c layla20_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/LaylaASIC.c layla20_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Darla24DSP.c darla24_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Gina24DSP.c gina24_301_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Gina24ASIC.c gina24_301_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Gina24_361DSP.c gina24_361_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Gina24ASIC_361.c gina24_361_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Layla24DSP.c layla24_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Layla24_1ASIC.c layla24_1_asic.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Layla24_2A_ASIC.c layla24_2A_asic.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Layla24_2S_ASIC.c layla24_2S_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/MonaDSP.c mona_301_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Mona1ASIC48.c mona_301_1_asic_48.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Mona1ASIC96.c mona_301_1_asic_96.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Mona361DSP.c mona_361_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Mona1ASIC48_361.c mona_361_1_asic_48.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Mona1ASIC96_361.c mona_361_1_asic_96.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/Mona2ASIC.c mona_2_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/MiaDSP.c mia_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/Echo3gDSP.c echo3g_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) ASIC/3G_ASIC.c 3g_asic.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/IndigoDSP.c indigo_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/IndigoIODSP.c indigo_io_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/IndigoIOxDSP.c indigo_iox_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/IndigoDJDSP.c indigo_dj_dsp.fw
+	./fw_writer$(BUILD_EXEEXT) DSP/IndigoDJxDSP.c indigo_djx_dsp.fw
--- a/emu/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/emu/Makefile.am	2019-06-28 02:01:37.856710042 +0800
@@ -22,5 +22,14 @@
 hotplugfw_DATA = 
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT)
--- a/maestro3/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/maestro3/Makefile.am	2019-06-28 02:03:13.704828106 +0800
@@ -17,5 +17,14 @@
 hotplugfw_DATA =
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT)
--- a/sb16/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/sb16/Makefile.am	2019-06-28 02:04:37.121743871 +0800
@@ -18,5 +18,14 @@
 hotplugfw_DATA =
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT)
--- a/wavefront/Makefile.am	2019-06-28 02:07:27.003727160 +0800
+++ b/wavefront/Makefile.am	2019-06-28 02:07:46.477947626 +0800
@@ -17,5 +17,14 @@
 hotplugfw_DATA =
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT)
--- a/ymfpci/Makefile.am	2015-02-26 20:36:03.000000000 +0800
+++ b/ymfpci/Makefile.am	2019-06-28 02:09:02.487797826 +0800
@@ -17,5 +17,14 @@
 hotplugfw_DATA =
 endif
 
-$(firmware_files): fw_writer
-	./fw_writer
+LINK_FOR_BUILD.c = $(CC_FOR_BUILD) $(CFLAGS_FOR_BUILD) $(CPPFLAGS_FOR_BUILD) $(LDFLAGS_FOR_BUILD) $(TARGET_ARCH_FOR_BUILD)
+
+$(fw_writer_OBJECTS) : CC=$(CC_FOR_BUILD)
+$(fw_writer_OBJECTS) : CFLAGS=$(CFLAGS_FOR_BUILD)
+$(fw_writer_OBJECTS) : CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+
+fw_writer$(BUILD_EXEEXT): $(tobin_OBJECTS)
+	$(LINK_FOR_BUILD.c) $^ $(LOADLIBES_FOR_BUILD) $(LDLIBS_FOR_BUILD) -o $@
+
+$(firmware_files): fw_writer$(BUILD_EXEEXT)
+	./fw_writer$(BUILD_EXEEXT)