X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=README;h=78ed56f68067bbdefef3bfb771110eb439377590;hb=5cd198029b32a694091328e73035dcf8bc26045e;hp=23b831978a748d7acc1cd63e16c11ad7c9082714;hpb=628e1d81fe575cfd281d8e0758b672b23d890c09;p=lttng-ust.git diff --git a/README b/README index 23b83197..78ed56f6 100644 --- a/README +++ b/README @@ -67,11 +67,15 @@ USAGE: "TRACEPOINT_DEFINE" and include the tracepoint provider. - Use "-I." for the compilation unit containing the tracepoint provider include (e.g. tp.c). - - Link application with "-ldl -llttng-ust". + - Link application with "-ldl" on Linux, with "-lc" on BSD. + - If building the provider directly into the application, + link the application with "-llttng-ust". + - If building a static library for the provider, link the static + library with "-lllttng-ust". - Include the tracepoint provider header into all C files using the provider. - Example: - tests/hello/ hello.c tp.c ust_tests_hello.h Makefile.example + tests/hello/ hello.c tp.c ust_tests_hello.h Makefile.example.* 2) Compile the Tracepoint Provider separately from the application, using dynamic linking: @@ -83,7 +87,7 @@ USAGE: files that use the provider. - Compile the tracepoint provider with "-I.". - Link the tracepoint provider with "-llttng-ust". - - Link application with "-ldl". + - Link application with "-ldl" on Linux, "-lc" on BSD. - Set a LD_PRELOAD environment to preload the tracepoint provider shared object before starting the application when tracing is needed. @@ -140,7 +144,7 @@ PACKAGE CONTENTS: - tests Various test programs - - liblttng-ust-libc + - liblttng-ust-libc-wrapper An example library that can be LD_PRELOAD'ed to instrument some calls to libc (currently malloc() and free()) in any program without need to recompile it.