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-rw-r--r--csu/Makefile57
1 files changed, 52 insertions, 5 deletions
diff --git a/csu/Makefile b/csu/Makefile
index da17b2c..6d804f4 100644
--- a/csu/Makefile
+++ b/csu/Makefile
@@ -27,7 +27,7 @@
subdir := csu
-routines = init-first libc-start
+routines = init-first libc-start $(libc-init) sysdep version
csu-dummies = $(filter-out $(start-installed-name),crt1.o Mcrt1.o)
extra-objs = start.o gmon-start.o \
$(start-installed-name) g$(start-installed-name) \
@@ -36,17 +36,35 @@ omit-deps = $(patsubst %.o,%,$(start-installed-name) g$(start-installed-name) \
$(csu-dummies))
install-lib = $(start-installed-name) g$(start-installed-name) \
$(csu-dummies)
-distribute = initfini.c gmon-start.c start.c defs.awk abi-note.S init.c
+distribute = initfini.c gmon-start.c start.c defs.awk munch.awk \
+ abi-note.S init.c
+generated = version-info.h
+before-compile = $(objpfx)version-info.h
all: # Make this the default target; it will be defined in Rules.
include ../Makeconfig
-ifeq ($(elf),yes)
-before-compile = $(objpfx)abi-tag.h
+ifeq (yes,$(elf))
+before-compile += $(objpfx)abi-tag.h
generated += abi-tag.h
endif
+ifeq (yes,$(gnu-ld))
+libc-init = set-init
+else
+libc-init = munch-init
+$(objpfx)munch-init.c: munch.awk munch-tmpl.c $(+subdir_inits)
+ $(AWK) -f $< subdirs='$(+init_subdirs)' $(word 2,$^) > $@-t
+ mv -f $@-t $@
+generated += munch-init.c
+
+# All initialization source files.
++subdir_inits := $(wildcard $(foreach dir,$(subdirs),$(dir)/init-$(dir).c))
+# All subdirectories containing initialization source files.
++init_subdirs := $(patsubst %/,%,$(dir $(+subdir_inits)))
+endif
+
ifeq ($(have-initfini),yes)
CPPFLAGS += -DHAVE_INITFINI
@@ -130,11 +148,12 @@ $(addprefix $(objpfx),$(filter-out $(start-installed-name),$(csu-dummies))):
$(COMPILE.c) $(@:.o=.c) $(OUTPUT_OPTION)
rm -f $(@:.o=.c)
+# These headers are used by the startup code.
/ := $$/# bite me.
$(objpfx)abi-tag.h: $(..)abi-tags
$(make-target-directory)
rm -f $@.new
- sed 's/#.*$//;/^[ ]*$$/d' $< | while read conf tag; do \
+ sed 's/#.*$//;/^[ ]*$/d' $< | while read conf tag; do \
test `expr '$(config-machine)-$(config-vendor)-$(config-os)' \
: "$$conf"` != 0 || continue; \
echo "$$tag" | sed > $@.new \
@@ -142,3 +161,31 @@ $(objpfx)abi-tag.h: $(..)abi-tags
done
if test -r $@.new; then mv -f $@.new $@; \
else echo >&2 'This configuration not matched in $<'; exit 1; fi
+
+all-Banner-files = $(wildcard $(addsuffix /Banner, \
+ $(addprefix $(..), $(subdirs))))
+$(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files)
+ $(make-target-directory)
+ (case $(config-os) in \
+ linux*) version=`(echo -e "#include <linux/version.h>\nUTS_RELEASE"\
+ | $(CC) -E -P - | \
+ sed -e 's/"\([^"]*\)".*/\1/p' -e d) 2>/dev/null`;\
+ if [ -z "$$version" ]; then \
+ if [ -r /proc/version ]; then \
+ version=`sed 's/.*version \([^ ]*\) .*/>>\1<</' \
+ < /proc/version`; \
+ else \
+ version=`uname -r`; \
+ fi; \
+ fi; \
+ echo -n "\"Compiled on a Linux $$version system "; \
+ echo "on `date +%Y-%m-%d`.\\n\"" ;; \
+ *) ;; \
+ esac; \
+ files="$(all-Banner-files)"; \
+ if test -n "$$files"; then \
+ echo "\"Available extensions:"; \
+ sed -e '/^#/d' -e 's/^[[:space:]]*/ /' $$files; \
+ echo "\""; \
+ fi) > $@T
+ mv -f $@T $@