2014-11-24 Siddhesh Poyarekar <siddhesh@redhat.com>
+ * elf/Makefile (CPPFLAGS-.os): Remove IN_LIB.
+ * elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
+ * extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
+ * include/libc-symbols.h (IS_IN_LIB): New macro.
+ * include/errno.h: Use IS_IN_LIB instead of IN_LIB.
+ * include/netdb.h: Likewise.
+ * include/stap-probe.h: Remove all uses of IN_LIB.
+
* Makeconfig (module-cppflags-real): Define MODULE_NAME
instead of IN_MODULE.
* include/libc-symbols.h (IN_MODULE): Define using
CFLAGS-rtld.c = $(SYSCONF-FLAGS)
CPPFLAGS-.os += $(if $(filter $(@F),$(patsubst %,%.os,$(all-rtld-routines))),\
- -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld)
+ -DNOT_IN_libc=1 -DIS_IN_rtld=1)
cpp-srcs-left := $(all-rtld-routines:=.os)
lib := rtld
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
# This here is the whole point of all the shenanigans.
-rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1 -DIN_LIB=rtld
+rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1
endif
include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
endif
-CPPFLAGS-$(lib) := -DNOT_IN_libc=1 -DIS_IN_$(lib)=1 -DIN_LIB=$(lib)
+CPPFLAGS-$(lib) := -DNOT_IN_libc=1 -DIS_IN_$(lib)=1
# define errno rtld_errno
extern int rtld_errno attribute_hidden;
-# elif !defined NOT_IN_libc || defined IN_LIB
+# elif !defined NOT_IN_libc || IS_IN_LIB
# include <tls.h>
# endif
extern __thread int errno attribute_tls_model_ie;
-# endif /* !NOT_IN_libc || IN_LIB */
+# endif /* !NOT_IN_libc || IS_IN_LIB */
# define __set_errno(val) (errno = (val))
#define IN_MODULE PASTE_NAME (MODULE_, MODULE_NAME)
#define IS_IN(lib) (IN_MODULE == MODULE_##lib)
+/* Returns true if the current module is a versioned library. Versioned
+ library names culled from shlib-versions files are assigned a MODULE_*
+ value lower than MODULE_LIBS_BEGIN. */
+#define IS_IN_LIB (IN_MODULE > MODULE_LIBS_BEGIN)
+
#define PASTE_NAME(a,b) PASTE_NAME1 (a,b)
#define PASTE_NAME1(a,b) a##b
#ifndef _ISOMAC
/* Macros for accessing h_errno from inside libc. */
-# if !defined NOT_IN_libc || defined IN_LIB
+# if !defined NOT_IN_libc || IS_IN_LIB
# undef h_errno
# ifndef NOT_IN_libc
# define h_errno __libc_h_errno
# define h_errno h_errno /* For #ifndef h_errno tests. */
# endif
extern __thread int h_errno attribute_tls_model_ie;
-# endif /* !NOT_IN_libc || IN_LIB */
+# endif /* !NOT_IN_libc || IS_IN_LIB */
# define __set_h_errno(x) (h_errno = (x))
libc_hidden_proto (hstrerror)
architecture specific and can be found in the gdb and SystemTap
source code. */
-# ifndef NOT_IN_libc
-# define IN_LIB libc
-# elif !defined IN_LIB
-/* This is intentionally defined with extra unquoted commas in it so
- that macro substitution will bomb out when it is used. We don't
- just use #error here, so that this header can be included by
- other headers that use LIBC_PROBE inside their own macros. We
- only want such headers to fail to compile if those macros are
- actually used in a context where IN_LIB has not been defined. */
-# define IN_LIB ,,,missing -DIN_LIB=... -- not extra-lib.mk?,,,
-# endif
-
# define LIBC_PROBE(name, n, ...) \
LIBC_PROBE_1 (MODULE_NAME, name, n, ## __VA_ARGS__)