Again we have to fix librtkaio to use MODULE_NAME definitions to work around the changes we are making and preserve ABI/API. commit 279bc5b3c384c09746fbadb2b68c6db9e833c064 Author: Siddhesh Poyarekar Date: Thu Nov 20 11:42:00 2014 +0530 Use MODULE_NAME in stap-probe instead of IN_LIB Define MODULE_NAME in the build command and define IN_MODULE using MODULE_NAME. Verified that the generated code is unchanged on x86_64. * Makeconfig (module-cppflags-real): Define MODULE_NAME instead of IN_MODULE. * include/libc-symbols.h (IN_MODULE): Define using MODULE_NAME. (PASTE_NAME, PASTE_NAME1): New macros. * include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead of IN_LIB. (STAP_PROBE_ASM): Likewise. Index: glibc-2.17-c758a686/Makeconfig =================================================================== --- glibc-2.17-c758a686.orig/Makeconfig +++ glibc-2.17-c758a686/Makeconfig @@ -741,7 +741,7 @@ in-module = $(subst -,_,$(firstword $(li libc)) module-cppflags-real = -include $(common-objpfx)libc-modules.h \ - -DIN_MODULE=MODULE_$(in-module) + -DMODULE_NAME=$(in-module) # We don't need libc-modules.h and the MODULE_NAME definition for .v.i # files. These targets don't (and will likely never need to) use the IS_IN @@ -940,7 +940,7 @@ postclean-generated += soversions.mk sov before-compile += $(common-objpfx)libc-modules.h ifeq ($(soversions.mk-done),t) # Generate a header with macro definitions for use with the IS_IN macro. -# These are the possible values for the IN_MODULE macro defined when building +# These are the possible values for the MODULE_NAME macro defined when building # sources, to identify which module the translation unit is going to be built # into. $(common-objpfx)libc-modules.h: $(common-objpfx)libc-modules.stmp; @: Index: glibc-2.17-c758a686/include/libc-symbols.h =================================================================== --- glibc-2.17-c758a686.orig/include/libc-symbols.h +++ glibc-2.17-c758a686/include/libc-symbols.h @@ -20,8 +20,12 @@ #ifndef _LIBC_SYMBOLS_H #define _LIBC_SYMBOLS_H 1 +#define IN_MODULE PASTE_NAME (MODULE_, MODULE_NAME) #define IS_IN(lib) (IN_MODULE == MODULE_##lib) +#define PASTE_NAME(a,b) PASTE_NAME1 (a,b) +#define PASTE_NAME1(a,b) a##b + /* This file's macros are included implicitly in the compilation of every file in the C library by -imacros. Index: glibc-2.17-c758a686/include/stap-probe.h =================================================================== --- glibc-2.17-c758a686.orig/include/stap-probe.h +++ glibc-2.17-c758a686/include/stap-probe.h @@ -30,7 +30,7 @@ Systemtap's header defines the macros STAP_PROBE (provider, name) and STAP_PROBEn (provider, name, arg1, ..., argn). For "provider" we paste - in the IN_LIB name (libc, libpthread, etc.) automagically. */ + in MODULE_NAME (libc, libpthread, etc.) automagically. */ # ifndef NOT_IN_libc # define IN_LIB libc @@ -45,7 +45,7 @@ # endif # define LIBC_PROBE(name, n, ...) \ - LIBC_PROBE_1 (IN_LIB, name, n, ## __VA_ARGS__) + LIBC_PROBE_1 (MODULE_NAME, name, n, ## __VA_ARGS__) # define LIBC_PROBE_1(lib, name, n, ...) \ STAP_PROBE##n (lib, name, ## __VA_ARGS__) @@ -53,7 +53,7 @@ # define STAP_PROBE0 STAP_PROBE # define LIBC_PROBE_ASM(name, template) \ - STAP_PROBE_ASM (IN_LIB, name, template) + STAP_PROBE_ASM (MODULE_NAME, name, template) # define LIBC_PROBE_ASM_OPERANDS STAP_PROBE_ASM_OPERANDS Index: glibc-2.17-c758a686/rtkaio/Makefile =================================================================== --- glibc-2.17-c758a686.orig/rtkaio/Makefile +++ glibc-2.17-c758a686/rtkaio/Makefile @@ -70,7 +70,9 @@ CFLAGS-kaio_librt-cancellation.c = -fasy LDFLAGS-rtkaio.so = -Wl,-soname=lib$(libprefix)rt.so$(librt.so-version) \ -Wl,--enable-new-dtags,-z,nodelete CPPFLAGS-librtkaio += -UIN_MODULE -DIN_MODULE=MODULE_librt \ - -UIS_IN_librt -DIS_IN_librt=1 -I$(..)rt + -UMODULE_NAME -DMODULE_NAME=librt \ + -UIS_IN_librt -DIS_IN_librt=1 \ + -I$(..)rt rpath-dirs := $(patsubst rt,rtkaio,$(rpath-dirs))