Fix: elfutils detection fallback for sles12

[babeltrace.git] / m4 / ae_lib_elfutils.m4

diff --git a/m4/ae_lib_elfutils.m4 b/m4/ae_lib_elfutils.m4
new file mode 100644 (file)
index 0000000..5030091
--- /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])
+])