Makefile: move functions and macros to own file

Move all define statements in its own file to tidy up the main
Makefile.

Change-Id: I451f2eeab2773982e02b2f2fdc9e8abe1cc87630
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.de>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/57935
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72236
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/Makefile.include b/Makefile.include
new file mode 100644
index 0000000..62c040c
--- /dev/null
+++ b/Makefile.include
@@ -0,0 +1,213 @@
+#
+# This file is part of the flashrom project.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+
+# Here are functions and macros defined for the Makefile
+
+define mark_unsupported
+$(foreach p,$1, \
+	$(if $(filter $($(p)),yes), \
+		$(eval UNSUPPORTED_FEATURES += $(p)=yes), \
+		$(eval override $(p) := no)))
+endef
+
+define filter_deps
+$(strip $(foreach p,$1, \
+	$(if $(filter $($(p)),yes), \
+		$(p))))
+endef
+
+define disable_all
+$(foreach p,$1, \
+	$(eval override $(p) := no))
+endef
+
+
+define COMPILER_TEST
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	return 0;
+}
+endef
+export COMPILER_TEST
+
+define LIBPCI_TEST
+/* Avoid a failing test due to libpci header symbol shadowing breakage */
+#define index shadow_workaround_index
+#if !defined PCIUTILS_PCI_H
+#include <pci/pci.h>
+#else
+#include <pciutils/pci.h>
+#endif
+struct pci_access *pacc;
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	pacc = pci_alloc();
+	return 0;
+}
+endef
+export LIBPCI_TEST
+
+define PCI_GET_DEV_TEST
+/* Avoid a failing test due to libpci header symbol shadowing breakage */
+#define index shadow_workaround_index
+#if !defined PCIUTILS_PCI_H
+#include <pci/pci.h>
+#else
+#include <pciutils/pci.h>
+#endif
+struct pci_access *pacc;
+struct pci_dev *dev = {0};
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	pacc = pci_alloc();
+	dev = pci_get_dev(pacc, dev->domain, dev->bus, dev->dev, 1);
+	return 0;
+}
+endef
+export PCI_GET_DEV_TEST
+
+define LIBUSB1_TEST
+#include <stddef.h>
+#include <libusb.h>
+int main(int argc, char **argv)
+{
+	(void)argc;
+	(void)argv;
+	libusb_init(NULL);
+	return 0;
+}
+endef
+export LIBUSB1_TEST
+
+define LIBJAYLINK_TEST
+#include <stddef.h>
+#include <libjaylink/libjaylink.h>
+int main(int argc, char **argv)
+{
+	struct jaylink_context *ctx;
+
+	(void)argc;
+	(void)argv;
+
+	jaylink_init(&ctx);
+	jaylink_exit(ctx);
+
+	return 0;
+}
+endef
+export LIBJAYLINK_TEST
+
+define FTDI_TEST
+#include <stdlib.h>
+#include <ftdi.h>
+struct ftdi_context *ftdic = NULL;
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	return ftdi_init(ftdic);
+}
+endef
+export FTDI_TEST
+
+define FTDI_232H_TEST
+#include <ftdi.h>
+enum ftdi_chip_type type = TYPE_232H;
+endef
+export FTDI_232H_TEST
+
+define UTSNAME_TEST
+#include <sys/utsname.h>
+struct utsname osinfo;
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	uname (&osinfo);
+	return 0;
+}
+endef
+export UTSNAME_TEST
+
+define LINUX_MTD_TEST
+#include <mtd/mtd-user.h>
+
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	return 0;
+}
+endef
+export LINUX_MTD_TEST
+
+define LINUX_SPI_TEST
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	return 0;
+}
+endef
+export LINUX_SPI_TEST
+
+define LINUX_I2C_TEST
+#include <linux/i2c-dev.h>
+#include <linux/i2c.h>
+
+int main(int argc, char **argv)
+{
+	(void) argc;
+	(void) argv;
+	return 0;
+}
+endef
+export LINUX_I2C_TEST
+
+define CLOCK_GETTIME_TEST
+#include <time.h>
+
+int main(int argc, char **argv)
+{
+	struct timespec res;
+	clock_gettime(CLOCK_REALTIME, &res);
+	return 0;
+}
+endef
+export CLOCK_GETTIME_TEST
+
+define NI845X_TEST
+#include <ni845x.h>
+
+int main(int argc, char **argv)
+{
+    (void) argc;
+    (void) argv;
+    char I2C_Device[256];
+    NiHandle Dev_Handle;
+    uInt32 NumberFound = 0;
+    ni845xFindDevice(I2C_Device, &Dev_Handle, &NumberFound);
+    ni845xCloseFindDeviceHandle(Dev_Handle);
+    return 0;
+}
+endef
+export NI845X_TEST