1 files changed, 108 insertions, 0 deletions
diff --git a/src/spdk/dpdk/buildtools/auto-config-h.sh b/src/spdk/dpdk/buildtools/auto-config-h.sh
new file mode 100755
index 00000000..d28a5c3a
--- /dev/null
+++ b/src/spdk/dpdk/buildtools/auto-config-h.sh
@@ -0,0 +1,108 @@
+#!/bin/sh
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2014-2015 6WIND S.A.
+#
+# Crude script to detect whether particular types, macros and functions are
+# defined by trying to compile a file with a given header. Can be used to
+# perform cross-platform checks since the resulting object file is not
+# executed.
+#
+# Set VERBOSE=1 in the environment to display compiler output and errors.
+#
+# CC, CPPFLAGS, CFLAGS, EXTRA_CPPFLAGS and EXTRA_CFLAGS are taken from the
+# environment.
+#
+# AUTO_CONFIG_CFLAGS may append additional CFLAGS without modifying the
+# above variables.
+
+file=${1:?output file name required (config.h)}
+macro=${2:?output macro name required (HAVE_*)}
+include=${3:?include name required (foo.h)}
+type=${4:?object type required (define, enum, type, field, func)}
+name=${5:?define/type/function name required}
+
+: ${CC:=cc}
+
+temp=/tmp/${0##*/}.$$.c
+
+case $type in
+define)
+	code="\
+#ifndef $name
+#error $name not defined
+#endif
+"
+	;;
+enum)
+	code="\
+long test____ = $name;
+"
+	;;
+type)
+	code="\
+$name test____;
+"
+	;;
+field)
+	code="\
+void test____(void)
+{
+	${name%%.*} test_____;
+
+	(void)test_____.${name#*.};
+}
+"
+	;;
+func)
+	code="\
+void (*test____)() = (void (*)())$name;
+"
+	;;
+*)
+	unset error
+	: ${error:?unknown object type \"$type\"}
+	exit
+esac
+
+if [ "${VERBOSE}" = 1 ]
+then
+	err=2
+	out=1
+	eol='
+'
+else
+	exec 3> /dev/null ||
+	exit
+	err=3
+	out=3
+	eol=' '
+fi &&
+printf 'Looking for %s %s in %s.%s' \
+	"${name}" "${type}" "${include}" "${eol}" &&
+printf "\
+#include <%s>
+
+%s
+" "$include" "$code" > "${temp}" &&
+if ${CC} ${CPPFLAGS} ${EXTRA_CPPFLAGS} ${CFLAGS} ${EXTRA_CFLAGS} \
+	${AUTO_CONFIG_CFLAGS} \
+	-c -o ${temp}.o "${temp}" 1>&${out} 2>&${err}
+then
+	rm -f "${temp}" "${temp}.o"
+	printf "\
+#ifndef %s
+#define %s 1
+#endif /* %s */
+
+" "${macro}" "${macro}" "${macro}" >> "${file}" &&
+	printf 'Defining %s.\n' "${macro}"
+else
+	rm -f "${temp}" "${temp}.o"
+	printf "\
+/* %s is not defined. */
+
+" "${macro}" >> "${file}" &&
+	printf 'Not defining %s.\n' "${macro}"
+fi
+
+exit