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-rw-r--r--elf/Makefile27
1 files changed, 26 insertions, 1 deletions
diff --git a/elf/Makefile b/elf/Makefile
index ef9207c..269a872 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -20,7 +20,7 @@
subdir := elf
-headers = elf.h bits/elfclass.h link.h dlfcn.h
+headers = elf.h bits/elfclass.h bits/dlfcn.h link.h dlfcn.h
routines = $(dl-routines) dl-open dl-close dl-symbol dl-support \
dl-version enbl-secure
@@ -88,6 +88,30 @@ $(objpfx)dl-allobjs.so: $(rtld-routines:%=$(objpfx)%.so)
$(objpfx)librtld.so: $(objpfx)dl-allobjs.so $(common-objpfx)libc_pic.a
$(reloc-link) '-Wl,-(' $^ -lgcc '-Wl,-)'
+# Do we need a linker script?
+rtld-ldscript-in := $(firstword $(wildcard $(+sysdep_dirs:%=%/rtld-ldscript.in)))
+ifneq (,$(rtld-ldscript-in))
+LDFLAGS-rtld = -T $(objpfx)rtld-ldscript
+
+before-compile += $(objpfx)rtld-ldscript
+rtld-parms = $(wildcard $(+sysdep_dirs:%=%/rtld-parms))
+include $(rtld-parms)
+generated += rtld-ldscript
+$(objpfx)rtld-ldscript: $(rtld-ldscript-in) $(rtld-parms)
+ sed -e 's#@@rtld-oformat@@#$(rtld-oformat)#' \
+ -e 's#@@rtld-arch@@#$(rtld-arch)#' \
+ -e 's#@@rtld-entry@@#$(rtld-entry)#' \
+ -e 's#@@rtld-base@@#$(rtld-base)#' $< >$@
+
+$(objpfx)ld.so: $(objpfx)librtld.so $(objpfx)rtld-ldscript
+ $(rtld-link) -Wl,-soname=$(rtld-installed-name)
+
+define rtld-link
+$(LINK.o) -nostdlib -nostartfiles -shared -o $@ \
+ -Wl,-rpath=$(default-rpath) $(LDFLAGS-rtld) \
+ $(filter-out $(objpfx)rtld-ldscript,$^)
+endef
+else
$(objpfx)ld.so: $(objpfx)librtld.so
$(rtld-link) -Wl,-soname=$(rtld-installed-name)
@@ -95,6 +119,7 @@ define rtld-link
$(LINK.o) -nostdlib -nostartfiles -shared -o $@ \
-Wl,-rpath=$(default-rpath) $^
endef
+endif
# The dl code in the static libc needs a default library path.
CFLAGS-dl-support.c = -D'DEFAULT_RPATH="$(default-rpath)"'