Detect and document dependency on -ldl on Linux, -lc on BSD for dlopen

[lttng-ust.git] / tests / demo / Makefile.am

diff --git a/tests/demo/Makefile.am b/tests/demo/Makefile.am
index f726b257a8c39afab04095a5e29b1ce94b119827..4e113edc87705e0c9654d68b5b589df5e493533e 100644 (file)
--- a/tests/demo/Makefile.am
+++ b/tests/demo/Makefile.am
@@ -2,11 +2,17 @@
 # description file.
 AM_CPPFLAGS = -I$(top_srcdir)/include -Wsystem-headers
 
+# Set LIBS to nothing so the application does not link on useless
+# libraries.
+LIBS =
+
 # Force the shared flag on the noinst libraries since they are
 # only build static by default
 FORCE_SHARED_LIB_OPTIONS = -module -shared -avoid-version \
                           -rpath $(abs_builddir)
 
+PROBE_LIBS = -lurcu-bp -lurcu-bp -luuid -lpthread -ldl
+
 noinst_LTLIBRARIES = liblttng-ust-provider-ust-tests-demo.la \
        liblttng-ust-provider-ust-tests-demo3.la
 
@@ -16,16 +22,26 @@ liblttng_ust_provider_ust_tests_demo_la_SOURCES = \
        tp2.c ust_tests_demo2.h
 liblttng_ust_provider_ust_tests_demo_la_LIBADD = \
        $(top_builddir)/liblttng-ust/liblttng-ust.la
-liblttng_ust_provider_ust_tests_demo_la_LDFLAGS = $(FORCE_SHARED_LIB_OPTIONS)
+liblttng_ust_provider_ust_tests_demo_la_LDFLAGS = \
+       $(FORCE_SHARED_LIB_OPTIONS) \
+       $(PROBE_LIBS)
 
 #contains ust_tests_demo3.h provider probes
 liblttng_ust_provider_ust_tests_demo3_la_SOURCES = \
        tp3.c ust_tests_demo3.h
 liblttng_ust_provider_ust_tests_demo3_la_LIBADD = \
        $(top_builddir)/liblttng-ust/liblttng-ust.la
-liblttng_ust_provider_ust_tests_demo3_la_LDFLAGS = $(FORCE_SHARED_LIB_OPTIONS)
+liblttng_ust_provider_ust_tests_demo3_la_LDFLAGS = \
+       $(FORCE_SHARED_LIB_OPTIONS) \
+       $(PROBE_LIBS)
 
 noinst_PROGRAMS = demo
 demo_SOURCES = demo.c ust_tests_demo.h
-# The demo program only depends on libdl.
-demo_LIBS = -ldl
+# The demo program only depends on libdl/libc for dlopen().
+if LTTNG_UST_BUILD_WITH_LIBDL
+demo_LDADD = -ldl
+endif
+if LTTNG_UST_BUILD_WITH_LIBC_DL
+demo_LDADD = -lc
+endif
+