openwrt/target/linux/uml/image/Makefile
Florian Fainelli e8c3b98973 uml: Check for glibc static libraries
UML statically links against libutil, librt and libpthread. Some hosts do not
necessarily have these libraries installed and we should find out sooner than
later (during the final vmlinux linking stage) about that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-05-26 15:43:22 -07:00

36 lines
1.2 KiB
Makefile

#
# Copyright (C) 2006-2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
define Image/Prepare
cp $(LINUX_DIR)/linux $(KDIR)/vmlinux.elf
endef
define Image/Build/squashfs
dd if=/dev/zero of=$(KDIR)/root.squashfs bs=1024k count=0 seek=$(CONFIG_TARGET_ROOTFS_PARTSIZE)
endef
define Image/Build
$(call Image/Build/$(1))
cp $(KDIR)/root.$(1) $(BIN_DIR)/$(IMG_PREFIX)-$(1).img
cp $(KDIR)/vmlinux.elf $(BIN_DIR)/$(IMG_PREFIX)-vmlinux
endef
$(eval $(call BuildImage))
# UML requires linking against several glibc static libraries: libutil, librt
# and libpthread, check that here. We do not check against libpthread
# specifically because getting something to build that references a libpthread
# symbol is pretty involved and Linux distributions package these 3 libraries
# in the same package.
$(eval $(call TestHostCommand,glibc-static, \
Please install a static glibc package. (Missing libutil.a, librt.a or libpthread.a), \
echo 'int main(int argc, char **argv) { login(0); timer_gettime(0, 0); return 0; }' | \
gcc -include utmp.h -x c -o $(TMP_DIR)/a.out - -static -lutil -lrt))