[PATCH] Add support for rtld directory different from slib directory

[Andreas Schwab <schwab@suse.de>]

Tested on aarch64 and x86.

Andreas.

	* configure.in: Substitute libc_cv_slibdir.
	* configure: Regenerate.
	* config.make.in (rtlddir): Set from libc_cv_rtlddir.
	* Makeconfig (rtlddir, inst_rtlddir): New variables.
	(rtld-LDFLAGS): Use them with $(rtld-installed-name).
	* elf/Makefile (install-others, CFLAGS-interp.c)
	(ldso_install, common-ldd-rewrite): Likewise.
	($(inst_rtlddir)/$(rtld-installed-name)): Renamed from
	$(inst_slibdir)/$(rtld-installed-name).
	* scripts/rellns-sh: Add -p option.
	* Makerules (make-shlib-link): Use rellns-sh to get relative name
	for source.
	* sysdeps/gnu/configure.in: Set libc_cv_rtldir for s390x.
	* sysdeps/gnu/configure: Regenerate.

ChangeLog.aarch64:
	* sysdeps/unix/sysv/linux/aarch64/configure.in: Set
	libc_cv_rtlddir.
	* sysdeps/unix/sysv/linux/aarch64/configure: Regenerate.
---
 Makeconfig                                         | 10 ++++++++--
 Makerules                                          |  4 ++--
 config.make.in                                     |  1 +
 configure                                          |  2 ++
 configure.in                                       |  1 +
 elf/Makefile                                       | 11 ++++++-----
 ports/sysdeps/unix/sysv/linux/aarch64/configure    |  1 +
 ports/sysdeps/unix/sysv/linux/aarch64/configure.in |  1 +
 scripts/rellns-sh                                  | 15 +++++++++++++--
 sysdeps/gnu/configure                              |  9 +++++++--
 sysdeps/gnu/configure.in                           |  9 +++++++--
 11 files changed, 49 insertions(+), 15 deletions(-)

diff --git a/Makeconfig b/Makeconfig
index 6c88918..70deb1e 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -151,12 +151,18 @@ libdir = $(exec_prefix)/lib
 endif
 inst_libdir = $(install_root)$(libdir)
 
-# Where to install the shared library and dynamic linker.
+# Where to install the shared library.
 ifndef slibdir
 slibdir = $(exec_prefix)/lib
 endif
 inst_slibdir = $(install_root)$(slibdir)
 
+# Where to install the dynamic linker.
+ifndef rtlddir
+rtlddir = $(slibdir)
+endif
+inst_rtlddir = $(install_root)$(rtlddir)
+
 # Prefix to put on files installed in $(libdir).  For libraries `libNAME.a',
 # the prefix is spliced between `lib' and the name, so the linker switch
 # `-l$(libprefix)NAME' finds the library; for other files the prefix is
@@ -441,7 +447,7 @@ endif
 endif
 ifeq (yes,$(build-shared))
 ifndef rtld-LDFLAGS
-rtld-LDFLAGS = -Wl,-dynamic-linker=$(slibdir)/$(rtld-installed-name)
+rtld-LDFLAGS = -Wl,-dynamic-linker=$(rtlddir)/$(rtld-installed-name)
 endif
 ifndef rtld-tests-LDFLAGS
 ifeq (yes,$(build-hardcoded-path-in-tests))
diff --git a/Makerules b/Makerules
index b115f1a..4d191e0 100644
--- a/Makerules
+++ b/Makerules
@@ -864,7 +864,7 @@ ifeq (no,$(cross-compiling))
 symbolic-link-prog := $(common-objpfx)elf/sln
 symbolic-link-list := $(common-objpfx)elf/symlink.list
 define make-shlib-link
-echo $(<F) $@ >> $(symbolic-link-list)
+echo $(shell $(..)scripts/rellns-sh -p $< $@) $@ >> $(symbolic-link-list)
 endef
 else # cross-compiling
 # We need a definition that can be used by elf/Makefile's install rules.
@@ -874,7 +874,7 @@ endif
 ifndef make-shlib-link
 define make-shlib-link
 rm -f $@
-$(LN_S) $(<F) $@
+$(LN_S) $(shell $(..)scripts/rellns-sh -p $< $@) $@
 endef
 endif
 
diff --git a/config.make.in b/config.make.in
index a966dca..2cab2f3 100644
--- a/config.make.in
+++ b/config.make.in
@@ -11,6 +11,7 @@ exec_prefix = @exec_prefix@
 datadir = @datadir@
 libdir = @libdir@
 slibdir = @libc_cv_slibdir@
+rtlddir = @libc_cv_rtlddir@
 localedir = @libc_cv_localedir@
 sysconfdir = @libc_cv_sysconfdir@
 libexecdir = @libexecdir@
diff --git a/configure b/configure
index e386c1a..2dc7eeb 100755
--- a/configure
+++ b/configure
@@ -594,6 +594,7 @@ libc_cv_rootsbindir
 libc_cv_localstatedir
 libc_cv_sysconfdir
 libc_cv_localedir
+libc_cv_rtlddir
 libc_cv_slibdir
 old_glibc_headers
 use_nscd
@@ -7374,6 +7375,7 @@ fi
 
 
 
+
 if test x$use_ldconfig = xyes; then
   $as_echo "#define USE_LDCONFIG 1" >>confdefs.h
 
diff --git a/configure.in b/configure.in
index c578979..cb31730 100644
--- a/configure.in
+++ b/configure.in
@@ -2153,6 +2153,7 @@ fi
 AC_SUBST(old_glibc_headers)
 
 AC_SUBST(libc_cv_slibdir)
+AC_SUBST(libc_cv_rtlddir)
 AC_SUBST(libc_cv_localedir)
 AC_SUBST(libc_cv_sysconfdir)
 AC_SUBST(libc_cv_localstatedir)
diff --git a/elf/Makefile b/elf/Makefile
index 6d4b365..9477a4d 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -66,7 +66,7 @@ endif
 ifeq (yes,$(build-shared))
 extra-objs	= $(all-rtld-routines:%=%.os) soinit.os sofini.os interp.os
 generated	+= librtld.os dl-allobjs.os ld.so ldd
-install-others	= $(inst_slibdir)/$(rtld-installed-name)
+install-others	= $(inst_rtlddir)/$(rtld-installed-name)
 install-bin-script = ldd
 endif
 
@@ -340,7 +340,7 @@ $(objpfx)ld.so: $(objpfx)librtld.os $(ld-map)
 	  | $(AWK) '($$7 ~ /^UND(|EF)$$/ && $$1 != "0:" && $$4 != "REGISTER") { print; p=1 } END { exit p != 0 }'
 
 # interp.c exists just to get this string into the libraries.
-CFLAGS-interp.c = -D'RUNTIME_LINKER="$(slibdir)/$(rtld-installed-name)"' \
+CFLAGS-interp.c = -D'RUNTIME_LINKER="$(rtlddir)/$(rtld-installed-name)"' \
 		  -DNOT_IN_libc=1
 $(objpfx)interp.os: $(common-objpfx)config.make
 
@@ -372,18 +372,19 @@ $(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 	$(make-target-directory)
 	$(do-install-program)
 
-$(inst_slibdir)/$(rtld-installed-name): \
+$(inst_rtlddir)/$(rtld-installed-name): \
   $(inst_slibdir)/$(rtld-version-installed-name) \
   $(inst_slibdir)/libc-$(version).so
+	$(make-target-directory)
 	$(make-shlib-link)
 
 # Special target called by parent to install just the dynamic linker.
 .PHONY: ldso_install
-ldso_install: $(inst_slibdir)/$(rtld-installed-name)
+ldso_install: $(inst_rtlddir)/$(rtld-installed-name)
 endif
 
 
-common-ldd-rewrite = -e 's%@RTLD@%$(slibdir)/$(rtld-installed-name)%g' \
+common-ldd-rewrite = -e 's%@RTLD@%$(rtlddir)/$(rtld-installed-name)%g' \
 		     -e 's%@VERSION@%$(version)%g' \
 		     -e 's|@PKGVERSION@|$(PKGVERSION)|g' \
 		     -e 's|@REPORT_BUGS_TO@|$(REPORT_BUGS_TO)|g'
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/configure b/ports/sysdeps/unix/sysv/linux/aarch64/configure
index 04b6c81..6b2608a 100644
--- a/ports/sysdeps/unix/sysv/linux/aarch64/configure
+++ b/ports/sysdeps/unix/sysv/linux/aarch64/configure
@@ -7,6 +7,7 @@ test -n "$libc_cv_slibdir" ||
 case "$prefix" in
   /usr | /usr/)
     libc_cv_slibdir="/lib64"
+    libc_cv_rtlddir="/lib"
     if test "$libdir" = '${exec_prefix}/lib'; then
       libdir='${exec_prefix}/lib64';
       # Locale data can be shared between 32bit and 64bit libraries
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/configure.in b/ports/sysdeps/unix/sysv/linux/aarch64/configure.in
index 6596a15..b090702 100644
--- a/ports/sysdeps/unix/sysv/linux/aarch64/configure.in
+++ b/ports/sysdeps/unix/sysv/linux/aarch64/configure.in
@@ -7,6 +7,7 @@ test -n "$libc_cv_slibdir" ||
 case "$prefix" in
   /usr | /usr/)
     libc_cv_slibdir="/lib64"
+    libc_cv_rtlddir="/lib"
     if test "$libdir" = '${exec_prefix}/lib'; then
       libdir='${exec_prefix}/lib64';
       # Locale data can be shared between 32bit and 64bit libraries
diff --git a/scripts/rellns-sh b/scripts/rellns-sh
index 0e861b5..94e7f00 100755
--- a/scripts/rellns-sh
+++ b/scripts/rellns-sh
@@ -16,8 +16,15 @@
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, see <http://www.gnu.org/licenses/>.
 
+do_print=false
+case $1 in
+  -p)
+    do_print=true
+    shift
+    ;;
+esac
 if test $# -ne 2; then
-  echo "Usage: rellns SOURCE DEST" >&2
+  echo "Usage: rellns [-p] SOURCE DEST" >&2
   exit 1
 fi
 
@@ -70,4 +77,8 @@ while test -n "$from"; do
   from=`echo $from | sed 's%^[^/]*/*%%'`
 done
 
-ln -s $rfrom$to $2
+if $do_print; then
+  echo "$rfrom$to"
+else
+  ln -s $rfrom$to $2
+fi
diff --git a/sysdeps/gnu/configure b/sysdeps/gnu/configure
index 26327ca..70aaa90 100644
--- a/sysdeps/gnu/configure
+++ b/sysdeps/gnu/configure
@@ -9,12 +9,17 @@
 case "$prefix" in
 /usr | /usr/)
   # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib.
-  # Allow earlier configure scripts to handle libc_cv_slibdir, libdir,
-  # and libc_cv_localedir.
+  # Allow earlier configure scripts to handle libc_cv_slibdir,
+  # libc_cv_rtlddir, libdir, and libc_cv_localedir.
   test -n "$libc_cv_slibdir" || \
   case $machine in
   sparc/sparc64 | x86_64* | powerpc/powerpc64 | s390/s390-64)
     libc_cv_slibdir=/lib64
+    case $machine in
+    s390/s390-64)
+      libc_cv_rtlddir=/lib
+      ;;
+    esac
     if test "$libdir" = '${exec_prefix}/lib'; then
       libdir='${exec_prefix}/lib64';
       # Locale data can be shared between 32bit and 64bit libraries
diff --git a/sysdeps/gnu/configure.in b/sysdeps/gnu/configure.in
index b8fd74c..ce251df 100644
--- a/sysdeps/gnu/configure.in
+++ b/sysdeps/gnu/configure.in
@@ -9,12 +9,17 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 case "$prefix" in
 /usr | /usr/)
   # 64-bit libraries on bi-arch platforms go in /lib64 instead of /lib.
-  # Allow earlier configure scripts to handle libc_cv_slibdir, libdir,
-  # and libc_cv_localedir.
+  # Allow earlier configure scripts to handle libc_cv_slibdir,
+  # libc_cv_rtlddir, libdir, and libc_cv_localedir.
   test -n "$libc_cv_slibdir" || \
   case $machine in
   sparc/sparc64 | x86_64* | powerpc/powerpc64 | s390/s390-64)
     libc_cv_slibdir=/lib64
+    case $machine in
+    s390/s390-64)
+      libc_cv_rtlddir=/lib
+      ;;
+    esac
     if test "$libdir" = '${exec_prefix}/lib'; then
       libdir='${exec_prefix}/lib64';
       # Locale data can be shared between 32bit and 64bit libraries
-- 
1.8.2

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."