Clean up gnu/lib-names.h generation (bug 14171).

This patch eliminates the mixture of SONAME information in
shlib-versions files and SONAME information used to generate
gnu/lib-names.h in makefiles, with the information in the makefiles
being removed so all this information comes from the shlib-versions
files.

So that gnu/lib-names.h supports multiple ABIs, it is changed to be
generated on the same basis as gnu/stubs.h: when there are multiple
ABIs, gnu/lib-names.h is a wrapper header (the same header installed
whatever ABI is being built) and separate headers such as
gnu/lib-names-64.h contain the substantive contents (only one such
header being installed by any glibc build).

The rules for building gnu/lib-names.h were moved from Makeconfig to
Makerules because they need to come after sysdeps makefiles are
included (now that "ifndef abi-variants" is a toplevel conditional on
the rules rather than $(abi-variants) being evaluated later inside the
commands for a rule).

Tested for x86_64 and x86 that the installed shared libraries are
unchanged by this patch, and examined the installed gnu/lib-names*.h
headers by hand.  Also tested the case of a single ABI (where there is
just a single header installed, again like stubs.h) by hacking
abi-variants to empty for x86_64.

	[BZ #14171]
	* Makeconfig [$(build-shared) = yes]
	($(common-objpfx)soversions.mk): Don't handle SONAMEs specified in
	makefiles.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	($(common-objpfx)gnu/lib-names.h): Remove rule.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	($(common-objpfx)gnu/lib-names.stmp): Likewise.  Split and moved
	to Makerules.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	(before-compile): Don't append $(common-objpfx)gnu/lib-names.h
	here.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	(common-generated): Don't append gnu/lib-names.h and
	gnu/lib-names.stmp here.
	* Makerules [$(build-shared) = yes && $(soversions.mk-done) = t]
	(lib-names-h-abi): New variable.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	(lib-names-stmp-abi): Likewise.
	[$(build-shared) = yes && $(soversions.mk-done) = t &&
	abi-variants] (before-compile): Append
	$(common-objpfx)$(lib-names-h-abi).
	[$(build-shared) = yes && $(soversions.mk-done) = t &&
	abi-variants] (common-generated): Append gnu/lib-names.h.
	[$(build-shared) = yes && $(soversions.mk-done) = t &&
	abi-variants] (install-others-nosubdir): Depend on
	$(inst_includedir)/$(lib-names-h-abi).
	[$(build-shared) = yes && $(soversions.mk-done) = t &&
	abi-variants] ($(common-objpfx)gnu/lib-names.h): New rule.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	($(common-objpfx)$(lib-names-h-abi)): New rule.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	($(common-objpfx)$(lib-names-stmp-abi)): Likewise.
	[$(build-shared) = yes && $(soversions.mk-done) = t]
	(common-generated): Append $(lib-names-h-abi) and
	$(lib-names-stmp-abi).
	* scripts/lib-names.awk: Do not handle multi being set.
	* sysdeps/unix/sysv/linux/aarch64/Makefile (abi-lp64-ld-soname):
	Remove variable.
	(abi-lp64_be-ld-soname): Likewise.
	* sysdeps/unix/sysv/linux/arm/Makefile (abi-soft-ld-soname):
	Likewise.
	(abi-hard-ld-soname): Likewise.
	* sysdeps/unix/sysv/linux/i386/shlib-versions: New file.
	* sysdeps/unix/sysv/linux/mips/Makefile (abi-o32_soft-ld-soname):
	Remove variable.
	(abi-o32_hard-ld-soname): Likewise.
	(abi-o32_soft_2008-ld-soname): Likewise.
	(abi-o32_hard_2008-ld-soname): Likewise.
	(abi-n32_soft-ld-soname): Likewise.
	(abi-n32_hard-ld-soname): Likewise.
	(abi-n32_soft_2008-ld-soname): Likewise.
	(abi-n32_hard_2008-ld-soname): Likewise.
	(abi-n64_soft-ld-soname): Likewise.
	(abi-n64_hard-ld-soname): Likewise.
	(abi-n64_soft_2008-ld-soname): Likewise.
	(abi-n64_hard_2008-ld-soname): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/Makefile (abi-64-v1-ld-soname):
	Likewise.
	(abi-64-v2-ld-soname): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Add
	ld.so entries.
	* sysdeps/unix/sysv/linux/s390/Makefile (abi-64-ld-soname): Remove
	variable.
	* sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Add ld.so
	entry.
	* sysdeps/unix/sysv/linux/x86/Makefile (abi-32-ld-soname): Remove
	variable.
	(abi-64-ld-soname): Likewise.
	(abi-x32-ld-soname): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Add ld.so
	entry.
	* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.

11 files changed, 6 insertions, 22 deletions

diff --git a/sysdeps/unix/sysv/linux/aarch64/Makefile b/sysdeps/unix/sysv/linux/aarch64/Makefile
index 88250dd87d..f2f28eeda9 100644
--- a/sysdeps/unix/sysv/linux/aarch64/Makefile
+++ b/sysdeps/unix/sysv/linux/aarch64/Makefile
@@ -32,8 +32,6 @@ endif
 
 abi-lp64-options := -U__AARCH64EB__
 abi-lp64-condition := !defined __AARCH64EB__
-abi-lp64-ld-soname := ld-linux-aarch64.so.1
 
 abi-lp64_be-options := -D__AARCH64EB__
 abi-lp64_be-condition := defined __AARCH64EB__
-abi-lp64_be-ld-soname := ld-linux-aarch64_be.so.1
diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile
index 80c112bc18..50410b67b5 100644
--- a/sysdeps/unix/sysv/linux/arm/Makefile
+++ b/sysdeps/unix/sysv/linux/arm/Makefile
@@ -68,7 +68,5 @@ endif
 abi-includes :=
 abi-soft-options := -U__ARM_PCS_VFP
 abi-soft-condition := !defined __ARM_PCS_VFP
-abi-soft-ld-soname := ld-linux.so.3
 abi-hard-options := -D__ARM_PCS_VFP
 abi-hard-condition := defined __ARM_PCS_VFP
-abi-hard-ld-soname := ld-linux-armhf.so.3
diff --git a/sysdeps/unix/sysv/linux/i386/shlib-versions b/sysdeps/unix/sysv/linux/i386/shlib-versions
new file mode 100644
index 0000000000..ca5d15b1df
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/shlib-versions
@@ -0,0 +1 @@
+ld=ld-linux.so.2
diff --git a/sysdeps/unix/sysv/linux/mips/Makefile b/sysdeps/unix/sysv/linux/mips/Makefile
index 9070b775c4..25fb18b3dd 100644
--- a/sysdeps/unix/sysv/linux/mips/Makefile
+++ b/sysdeps/unix/sysv/linux/mips/Makefile
@@ -25,84 +25,72 @@ abi-o32_soft-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
 abi-o32_soft-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_soft_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_ABI32)
-abi-o32_soft-ld-soname := ld.so.1
 abi-o32_hard-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
 			-D__mips_hard_float -U__mips_soft_float \
 			-U__mips_nan2008
 abi-o32_hard-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_hard_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_ABI32)
-abi-o32_hard-ld-soname := ld.so.1
 abi-o32_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
 			     -D__mips_soft_float -U__mips_hard_float \
 			     -D__mips_nan2008
 abi-o32_soft_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_soft_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_ABI32)
-abi-o32_soft_2008-ld-soname := ld-linux-mipsn8.so.1
 abi-o32_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
 			     -D__mips_hard_float -U__mips_soft_float \
 			     -D__mips_nan2008
 abi-o32_hard_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_hard_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_ABI32)
-abi-o32_hard_2008-ld-soname := ld-linux-mipsn8.so.1
 abi-n32_soft-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
 			-D__mips_soft_float -U__mips_hard_float \
 			-U__mips_nan2008
 abi-n32_soft-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_soft_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_NABI32)
-abi-n32_soft-ld-soname := ld.so.1
 abi-n32_hard-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
 			-D__mips_hard_float -U__mips_soft_float \
 			-U__mips_nan2008
 abi-n32_hard-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_hard_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_NABI32)
-abi-n32_hard-ld-soname := ld.so.1
 abi-n32_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
 			     -D__mips_soft_float -U__mips_hard_float \
 			     -D__mips_nan2008
 abi-n32_soft_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_soft_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_NABI32)
-abi-n32_soft_2008-ld-soname := ld-linux-mipsn8.so.1
 abi-n32_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
 			     -D__mips_hard_float -U__mips_soft_float \
 			     -D__mips_nan2008
 abi-n32_hard_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_hard_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_NABI32)
-abi-n32_hard_2008-ld-soname := ld-linux-mipsn8.so.1
 abi-n64_soft-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
 			-D__mips_soft_float -U__mips_hard_float \
 			-U__mips_nan2008
 abi-n64_soft-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_soft_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_ABI64)
-abi-n64_soft-ld-soname := ld.so.1
 abi-n64_hard-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
 			-D__mips_hard_float -U__mips_soft_float \
 			-U__mips_nan2008
 abi-n64_hard-condition := !defined(__mips_nan2008) \
 			  && defined(__mips_hard_float) \
 			  && (_MIPS_SIM == _MIPS_SIM_ABI64)
-abi-n64_hard-ld-soname := ld.so.1
 abi-n64_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
 			     -D__mips_soft_float -U__mips_hard_float \
 			     -D__mips_nan2008
 abi-n64_soft_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_soft_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_ABI64)
-abi-n64_soft_2008-ld-soname := ld-linux-mipsn8.so.1
 abi-n64_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
 			     -D__mips_hard_float -U__mips_soft_float \
 			     -D__mips_nan2008
 abi-n64_hard_2008-condition := defined(__mips_nan2008) \
 			       && defined(__mips_hard_float) \
 			       && (_MIPS_SIM == _MIPS_SIM_ABI64)
-abi-n64_hard_2008-ld-soname := ld-linux-mipsn8.so.1
 
 ifeq ($(subdir),elf)
 ifeq ($(build-shared),yes)
diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile
index 28f7165815..e66073639a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/Makefile
+++ b/sysdeps/unix/sysv/linux/powerpc/Makefile
@@ -3,10 +3,8 @@ abi-32-options := -U__powerpc64__
 abi-32-condition := __WORDSIZE == 32
 abi-64-v1-options := -D__powerpc64__ -U_CALL_ELF -D_CALL_ELF=1
 abi-64-v1-condition := __WORDSIZE == 64 && _CALL_ELF != 2
-abi-64-v1-ld-soname := ld64.so.1
 abi-64-v2-options := -D__powerpc64__ -U_CALL_ELF -D_CALL_ELF=2
 abi-64-v2-condition := __WORDSIZE == 64 && _CALL_ELF == 2
-abi-64-v2-ld-soname := ld64.so.2
 
 ifeq ($(subdir),rt)
 librt-routines += rt-sysdep
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions b/sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions
index 0b83af114e..1f5493babc 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions
@@ -1,7 +1,9 @@
 %ifdef HAVE_ELFV2_ABI
 DEFAULT			GLIBC_2.17
+ld=ld64.so.2		GLIBC_2.17
 libpthread=0		GLIBC_2.17
 %else
 DEFAULT			GLIBC_2.3
+ld=ld64.so.1		GLIBC_2.3
 libpthread=0		GLIBC_2.3
 %endif
diff --git a/sysdeps/unix/sysv/linux/s390/Makefile b/sysdeps/unix/sysv/linux/s390/Makefile
index 5c3ca69e71..497ffd566c 100644
--- a/sysdeps/unix/sysv/linux/s390/Makefile
+++ b/sysdeps/unix/sysv/linux/s390/Makefile
@@ -3,7 +3,6 @@ abi-32-options := -U__s390x__
 abi-32-condition := __WORDSIZE == 32
 abi-64-options := -D__s390x__
 abi-64-condition := __WORDSIZE == 64
-abi-64-ld-soname := ld64.so.1
 
 ifeq ($(subdir),rt)
 librt-routines += rt-sysdep
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions b/sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions
index 31edcfc4e1..9de0608fbc 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions
@@ -1,2 +1,3 @@
 DEFAULT			GLIBC_2.2
+ld=ld64.so.1		GLIBC_2.2
 libpthread=0		GLIBC_2.2
diff --git a/sysdeps/unix/sysv/linux/x86/Makefile b/sysdeps/unix/sysv/linux/x86/Makefile
index 012125f30c..0281f87e03 100644
--- a/sysdeps/unix/sysv/linux/x86/Makefile
+++ b/sysdeps/unix/sysv/linux/x86/Makefile
@@ -5,13 +5,10 @@ abi-variants := 32 64 x32
 
 abi-32-options := -D__i386__ -U__x86_64__
 abi-32-condition := !defined __x86_64__
-abi-32-ld-soname := ld-linux.so.2
 abi-64-options := -U__i386__ -D__x86_64__ -U__ILP32__ -D__LP64__
 abi-64-condition := defined __x86_64__ && defined __LP64__
-abi-64-ld-soname := ld-linux-x86-64.so.2
 abi-x32-options := -U__i386__ -D__x86_64__ -D__ILP32__ -U__LP64__
 abi-x32-condition := defined __x86_64__ && defined __ILP32__
-abi-x32-ld-soname := ld-linux-x32.so.2
 
 ifeq ($(subdir),misc)
 sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h sys/debugreg.h sys/io.h
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/shlib-versions b/sysdeps/unix/sysv/linux/x86_64/64/shlib-versions
index 3d28722178..897b7e0e1b 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/shlib-versions
+++ b/sysdeps/unix/sysv/linux/x86_64/64/shlib-versions
@@ -1,4 +1,5 @@
 # DEFAULT			Earliest symbol set
 # ---------------		------------------------------
 DEFAULT			GLIBC_2.2.5
+ld=ld-linux-x86-64.so.2	GLIBC_2.2.5
 libpthread=0		GLIBC_2.2.5
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions b/sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions
index e4db8b92ef..df96afab38 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions
@@ -1,4 +1,5 @@
 # DEFAULT			Earliest symbol set
 # ---------------		------------------------------
 DEFAULT			GLIBC_2.16
+ld=ld-linux-x32.so.2	GLIBC_2.16
 libpthread=0		GLIBC_2.16