Check if the AR environment variable exists for cross compilation

[lttng-ust.git] / doc / examples / hello-static-lib / Makefile

diff --git a/doc/examples/hello-static-lib/Makefile b/doc/examples/hello-static-lib/Makefile
index dd246f70a5c274dd465f18cf025e57b5bc678e17..8f094e0e70e5fff33ff29458136bd6dc0aaea794 100644 (file)
--- a/doc/examples/hello-static-lib/Makefile
+++ b/doc/examples/hello-static-lib/Makefile
@@ -8,45 +8,38 @@
 # Permission to modify the code and to distribute modified code is
 # granted, provided the above notices are retained, and a notice that
 # the code was modified is included with the above copyright notice.
-
+#
 # This Makefile is not using automake so that users may see how to build
 # a program with tracepoint provider probes compiled as static libraries.
+#
+# This makefile is purposefully kept simple to support GNU and BSD make.
 
-CC = gcc
-CFLAGS += -I.
+LOCAL_CPPFLAGS += -I.
 LIBS = -ldl -llttng-ust        # On Linux
 #LIBS = -lc -llttng-ust        # On BSD
-
-# Only necessary when building from the source tree and lttng-ust is not
-# installed
-ifdef BUILD_EXAMPLES_FROM_TREE
-CFLAGS += -I../../../include/
-LIBLTTNG_UST_PATH = ../../../liblttng-ust/.libs/
-LDFLAGS += -L$(LIBLTTNG_UST_PATH) -Wl,-rpath='$$ORIGIN/$(LIBLTTNG_UST_PATH)'
-
-# Third-party Makefiles have to define these targets to integrate with an
-# automake project
-EMPTY_AUTOMAKE_TARGETS = distdir install install-data install-exec uninstall \
-       install-dvi install-html install-info install-ps install-pdf \
-       installdirs check installcheck mostlyclean distclean maintainer-clean \
-       dvi html pdf ps info tags ctags
-.PHONY: $(EMPTY_AUTOMAKE_TARGETS)
-$(EMPTY_AUTOMAKE_TARGETS):
-endif
+AM_V_P := :
+AR ?= ar
 
 all: hello
 
 lttng-ust-provider-hello.o: tp.c ust_tests_hello.h
-       $(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
+       @if $(AM_V_P); then set -x; else echo "  CC       $@"; fi; \
+               $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
+               $(CFLAGS) -c -o $@ $<
 
 lttng-ust-provider-hello.a: lttng-ust-provider-hello.o
-       ar -rc $@ $^
+       @if $(AM_V_P); then set -x; else echo "  AR       $@"; fi; \
+               $(AR) -rc $@ lttng-ust-provider-hello.o
 
 hello.o: hello.c
-       $(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
+       @if $(AM_V_P); then set -x; else echo "  CC       $@"; fi; \
+               $(CC) $(CPPFLAGS) $(LOCAL_CPPFLAGS) $(AM_CFLAGS) $(AM_CPPFLAGS) \
+               $(CFLAGS) -c -o $@ $<
 
 hello: hello.o lttng-ust-provider-hello.a
-       $(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
+       @if $(AM_V_P); then set -x; else echo "  CCLD     $@"; fi; \
+               $(CC) -o $@ $(LDFLAGS) $(CPPFLAGS) $(AM_LDFLAGS) $(AM_CFLAGS) \
+               $(CFLAGS) hello.o lttng-ust-provider-hello.a $(LIBS)
 
 .PHONY: clean
 clean: