test: Add a simple test to detected warnings with uint64_t, uintptr_t

These types are problematic because they are typically declared in a
non-standard way in U-Boot. For example, U-Boot uses 'long long' for
int64_t even on a 64-bit machine whereas stdint.h uses 'long'.
Similarly, U-Boot always uses 'long' for intptr_t whereas stdint.h mostly
uses 'int'.

This simple test script runs a few toolchains on a few archs to check for
warnings.

Signed-off-by: Simon Glass <sjg@chromium.org>

test/stdint/int-types.c

@@ -0,0 +1,13 @@
+#include <common.h>
+#include <inttypes.h>
+
+int test_types(void)
+{
+	uintptr_t uintptr = 0;
+	uint64_t uint64 = 0;
+	u64 u64_val = 0;
+
+	printf("uintptr = %" PRIuPTR "\n", uintptr);
+	printf("uint64 = %" PRIu64 "\n", uint64);
+	printf("u64 = %" PRIu64 "\n", u64_val);
+}

test/stdint/test-includes.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+# Test script to check uintptr_t and 64-bit types for warnings
+#
+# It builds a few boards with different toolchains. If there are no warnings
+# then all is well.
+#
+# Usage:
+#
+# Make sure that your toolchains are correct at the bottom of this file
+#
+# Then:
+#	./test/stdint/test-includes.sh
+
+out=/tmp/test-includes.tmp
+
+try_test() {
+	local board=$1
+	local arch=$2
+	local soc=$3
+	local gcc=$4
+	local flags="$5"
+
+	echo $@
+	if ! which ${gcc} >/dev/null 2>&1; then
+		echo "Not found: ${gcc}"
+		return
+	fi
+
+	rm -rf ${out}
+	mkdir -p ${out}
+	touch ${out}/config.h
+	mkdir -p ${out}/generated
+	touch ${out}/generated/generic-asm-offsets.h
+	mkdir -p ${out}/include/asm
+	ln -s $(pwd)/arch/${arch}/include/asm/arch-${soc} \
+			${out}/include/asm/arch
+
+	cmd="${gcc} -c -D__KERNEL__ ${flags} \
+		-fno-builtin -ffreestanding \
+		-Iarch/${arch}/include \
+		-Iinclude \
+		-I${out} -I${out}/include \
+		-include configs/${board}.h test/stdint/int-types.c \
+		-o /dev/null"
+	$cmd
+}
+
+# Run a test with and without CONFIG_USE_STDINT
+try_both() {
+	try_test $@
+	try_test $@ -DCONFIG_USE_STDINT
+}
+
+# board arch soc path-to-gcc
+try_both sandbox sandbox - gcc
+try_both coreboot x86 - x86_64-linux-gnu-gcc
+try_both seaboard arm tegra20 /opt/linaro/gcc-linaro-arm-linux-gnueabihf-4.8-2013.08_linux/bin/arm-linux-gnueabihf-gcc