Fix: Tests: use -no-pie linker option only when available

[lttng-tools.git] / tests / utils / testapp / gen-syscall-events-callstack / Makefile.am

diff --git a/tests/utils/testapp/gen-syscall-events-callstack/Makefile.am b/tests/utils/testapp/gen-syscall-events-callstack/Makefile.am
index 6e075a0dffd1c78a17397d3c9b3b6b16191ba9b7..a62d164515aa1247dae356d4b31f4959235f79cd 100644 (file)
--- a/tests/utils/testapp/gen-syscall-events-callstack/Makefile.am
+++ b/tests/utils/testapp/gen-syscall-events-callstack/Makefile.am
@@ -1,5 +1,15 @@
 AM_CFLAGS += -I$(top_srcdir)/tests/utils/
-AM_CFLAGS += -fno-omit-frame-pointer -no-pie
+AM_CFLAGS += -fno-omit-frame-pointer
+#  The feature called Position Independent Execution (PIE) may be enabled by
+#  default on some systems. Supporting this feature for this testapp would
+#  increase the complexity of the testcases using this testapp as it would make
+#  the addresses of functions unpredictable. So we prevent the linker from
+#  using it by using the -no-pie option. If the -no-pie option is not
+#  available, we assume that the PIE is not enabled by default so we do not
+#  need to disable it.
+if LINKER_HAVE_NO_PIE_OPTION
+AM_CFLAGS += -no-pie
+endif
 
 noinst_PROGRAMS = gen-syscall-events-callstack
 gen_syscall_events_callstack_SOURCES = gen-syscall-events-callstack.c