uclibc-ng/Makefile

# Makefile for uClibc
#
# Copyright (C) 2000 by Lineo, inc.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Library General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option) any
# later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
# details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Derived in part from the Linux-8086 C library, the GNU C Library, and several
# other sundry sources.  Files within this library are copyright by their
# respective copyright holders.

#--------------------------------------------------------
#
#There are a number of configurable options in "Config"
#
#--------------------------------------------------------

include Rules.mak

DIRS = misc pwd_grp stdio string termios inet signal stdlib sysdeps unistd extra

ifeq ($(strip $(HAS_MMU)),true)
	DO_SHARED=shared
endif

all: $(LIBNAME) $(DO_SHARED) done

$(LIBNAME): halfclean headers uClibc_config.h subdirs
	$(CROSS)ranlib $(LIBNAME)

shared: $(LIBNAME)
	@make -C ld.so-1
	@rm -rf tmp
	@mkdir tmp
	@(cd tmp; CC=$(CC) /bin/sh ../extra/scripts/get-needed-libgcc-objects.sh)
	if [ -s ./tmp/libgcc-need.a ] ; then \
		$(CC) -g $(LDFLAGS) -shared -o $(SHARED_FULLNAME) \
		    -Wl,-soname,$(SHARED_MAJORNAME) -Wl,--whole-archive \
		    ./$(LIBNAME) ./tmp/libgcc-need.a ; \
	else \
		$(CC) -g $(LDFLAGS) -shared -o $(SHARED_FULLNAME) \
		    -Wl,-soname,$(SHARED_MAJORNAME) -Wl,--whole-archive \
		    ./$(LIBNAME) ; \
	fi
	@rm -rf tmp
	ln -sf $(SHARED_FULLNAME) $(SHARED_MAJORNAME)
	ln -sf $(SHARED_MAJORNAME) libc.so

done: $(LIBNAME) $(DO_SHARED)
	@echo
	@echo Finally finished compiling...
	@echo

halfclean:
	@rm -f $(LIBNAME) crt0.o uClibc_config.h
	@rm -f $(SHARED_FULLNAME) $(SHARED_MAJORNAME) libc.so

headers: dummy
	@rm -f include/asm include/linux include/bits
	@ln -s $(KERNEL_SOURCE)/include/asm include/asm
	@if [ ! -f include/asm/unistd.h ] ; then \
	    echo " "; \
	    echo "The path '$(KERNEL_SOURCE)/include/asm' doesn't exist."; \
	    echo "I bet you didn't set KERNEL_SOURCE, TARGET_ARCH or HAS_MMU in \`Config'"; \
	    echo "correctly.  Please edit \`Config' and fix these settings."; \
	    echo " "; \
	    /bin/false; \
	fi;
	@if [ $(HAS_MMU) != "true" ]  && [ $(TARGET_ARCH) = "i386" ] ; then \
	    echo "WARNING: I bet your x86 system really has an MMU, right?"; \
	    echo "         malloc and friends won't work unless you fix \`Config'"; \
	    echo " "; \
	    sleep 10; \
	fi;
	@ln -s $(KERNEL_SOURCE)/include/linux include/linux
	@ln -s ../sysdeps/linux/$(TARGET_ARCH)/bits include/bits
	@ln -sf ../../../../uClibc_config.h sysdeps/linux/$(TARGET_ARCH)/bits/uClibc_config.h


tags:
	ctags -R

clean: subdirs_clean halfclean
	@rm -rf tmp
	rm -f include/asm include/linux include/bits

subdirs: $(patsubst %, _dir_%, $(DIRS))
subdirs_clean: $(patsubst %, _dirclean_%, $(DIRS) test)

$(patsubst %, _dir_%, $(DIRS)) : dummy
	$(MAKE) -C $(patsubst _dir_%, %, $@)

$(patsubst %, _dirclean_%, $(DIRS) test) : dummy
	$(MAKE) -C $(patsubst _dirclean_%, %, $@) clean

install: install_runtime install_dev install_ldso

# Installs shared library
install_runtime:
ifneq ($(DO_SHARED),)
	install -d $(INSTALL_DIR)/lib
	rm -rf $(INSTALL_DIR)/lib/$(SHARED_FULLNAME)
	rm -rf $(INSTALL_DIR)/lib/$(SHARED_MAJORNAME)
	rm -rf $(INSTALL_DIR)/lib/libc.so
	install -m 644 $(SHARED_FULLNAME) $(INSTALL_DIR)/lib/
	(cd $(INSTALL_DIR)/lib;ln -sf $(SHARED_FULLNAME) $(SHARED_MAJORNAME))
	(cd $(INSTALL_DIR)/lib;ln -sf $(SHARED_MAJORNAME) libc.so)
# ldconfig is really not necessary, and impossible to cross
#ifeq ($(INSTALL_DIR),)
#	/sbin/ldconfig -n $(INSTALL_DIR)/lib
#endif
else
	echo shared library not installed
endif

# Installs development library and headers
# This is done with the assumption that it can blow away anything
# in $(INSTALL_DIR)/include.  Probably true only if you're using
# a packaging system.
install_dev:
	install -d $(INSTALL_DIR)/include
	install -d $(INSTALL_DIR)/include/bits
	rm -f $(INSTALL_DIR)/include/asm
	rm -f $(INSTALL_DIR)/include/linux
	ln -s $(KERNEL_SOURCE)/include/asm $(INSTALL_DIR)/include/asm
	ln -s $(KERNEL_SOURCE)/include/linux $(INSTALL_DIR)/include/linux
	find include/ -type f -depth -not -path "*CVS*" -exec install -D -m 644 {} $(INSTALL_DIR)/'{}' ';'
	find include/bits/ -type f -depth -not -path "*CVS*" -exec install -D -m 644 {} $(INSTALL_DIR)/'{}' ';'
	install -m 644 include/bits/uClibc_config.h $(INSTALL_DIR)/include/bits/
	install -d $(INSTALL_DIR)/lib
	rm -f $(INSTALL_DIR)/lib/$(LIBNAME)
	install -m 644 $(LIBNAME) $(INSTALL_DIR)/lib/
	@if [ -f crt0.o ] ; then install -m 644 crt0.o $(INSTALL_DIR)/lib/; fi
	install -d $(INSTALL_DIR)/bin
	@if [ -f extra/gcc-uClibc/$(TARGET_ARCH)-uclibc-gcc ] ; then install -m 755 extra/gcc-uClibc/$(TARGET_ARCH)-uclibc-gcc $(INSTALL_DIR)/bin/ ; fi


install_ldso:
ifeq ($(strip $(DO_SHARED)),shared)
	@make -C ld.so-1 install
else
	@echo "Skipping shared library support"
endif

uClibc_config.h: Config
	@echo "/* WARNING!!! AUTO-GENERATED FILE!!! DO NOT EDIT!!! */" > uClibc_config.h
	@echo "#if !defined __FEATURES_H && !defined __need_uClibc_config_h" >> uClibc_config.h
	@echo "#error Never include <bits/uClibc_config.h> directly; use <features.h> instead." >> uClibc_config.h
	@echo "#endif" >> uClibc_config.h
	@echo "#define linux 1" >> uClibc_config.h 
	@echo "#define __linux__ 1" >> uClibc_config.h 
	@if [ "$(HAS_MMU)" = "true" ] ; then \
	    echo "#define __UCLIBC_HAS_MMU__ 1" >> uClibc_config.h ; \
	else \
	    echo "#undef __UCLIBC_HAS_MMU__" >> uClibc_config.h ; \
	fi
	@if [ "$(HAS_FLOATS)" = "true" ] ; then \
	    echo "#define __UCLIBC_HAS_FLOATS__ 1" >> uClibc_config.h ; \
	else \
	    echo "#undef __UCLIBC_HAS_FLOATS__" >> uClibc_config.h ; \
	fi
	@if [ "$(HAS_LONG_LONG)" = "true" ] ; then \
	    echo "#define __UCLIBC_HAS_LONG_LONG__ 1" >> uClibc_config.h ; \
	else \
	    echo "#undef __UCLIBC_HAS_LONG_LONG__" >> uClibc_config.h ; \
	fi
	@if [ "$(HAS_LOCALE)" = "true" ] ; then \
	    echo "#define __UCLIBC_HAS_LOCALE__ 1" >> uClibc_config.h ; \
	    echo "#define __UCLIBC_LOCALE_DIR \""$(LOCALE_DIR)"\"" >> uClibc_config.h ; \
	else \
	    echo "#undef __UCLIBC_HAS_LOCALE__" >> uClibc_config.h ; \
	fi
	@if [ "$(TARGET_ARCH)" = "m68k" ] ; then \
	    echo "#define __VFORK_MACRO__ 1" >> uClibc_config.h ; \
	    if [ `expr match "$(CC)" ".*\(m68k-elf-.*\)"`x = x ]; then \
		echo "#define const" >> uClibc_config.h ; \
		echo "#define __const" >> uClibc_config.h ; \
		echo "#define __extension" >> uClibc_config.h ; \
	    fi; \
	else \
	    echo "#undef __VFORK_MACRO__" >> uClibc_config.h ; \
	fi
	@if [ "$(TARGET_ARCH)" = "sh" ] ; then \
	    echo "#define NO_UNDERSCORES 1" >> uClibc_config.h ; \
	else \
	    echo "#undef NO_UNDERSCORES" >> uClibc_config.h ; \
	fi

.PHONY: dummy