X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=m4%2Fae_lib_elfutils.m4;fp=m4%2Fae_lib_elfutils.m4;h=50300913baae762a33c7c80d20a651c2e8478d68;hp=0000000000000000000000000000000000000000;hb=1c482ed8da42029e59b4258c86739e5c046be600;hpb=435aa29aff0527d36aafa1b657ae70b9db5f9ea5

diff --git a/m4/ae_lib_elfutils.m4 b/m4/ae_lib_elfutils.m4
new file mode 100644
index 00000000..50300913
--- /dev/null
+++ b/m4/ae_lib_elfutils.m4
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: MIT
+#
+# Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+# Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com>
+#
+# ae_lib_elfutils.m4 -- Check elfutils version
+#
+# Check the currently installed version of elfutils by using the
+# `_ELFUTILS_PREREQ` macro defined in <elfutils/version.h>.
+#
+# The cache variable for this test is `ae_cv_lib_elfutils`.
+#
+# AE_LIB_ELFUTILS(MAJOR_VERSION, MINOR_VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+# ---------------------------------------------------------------------------
+AC_DEFUN([AE_LIB_ELFUTILS], [
+m4_pushdef([major_version], [$1])
+m4_pushdef([minor_version], [$2])
+m4_pushdef([true_action], m4_default([$3], [:]))
+m4_pushdef([false_action], m4_default(
+	[$4], [AC_MSG_ERROR(elfutils >= major_version.minor_version is required)]
+))
+
+AC_CACHE_CHECK(
+	[for elfutils version >= major_version.minor_version],
+	[ae_cv_lib_elfutils], [
+	AC_LANG_PUSH([C])
+	AC_COMPILE_IFELSE(
+		[AC_LANG_SOURCE([
+		#include <elfutils/version.h>
+
+		#if (!_ELFUTILS_PREREQ(][]major_version[][, ][]minor_version[][))
+		#error "elfutils minimum required version not met."
+		#endif
+
+		void main(void) {
+			return;
+		}
+		])],
+		[ae_cv_lib_elfutils=yes],
+		[ae_cv_lib_elfutils=no]
+	)
+	AC_LANG_POP([C])
+])
+
+AS_IF([test "x$ae_cv_lib_elfutils" = "xyes"], [true_action], [false_action])
+
+m4_popdef([false_action])
+m4_popdef([true_action])
+m4_popdef([minor_version])
+m4_popdef([major_version])
+])