debian/sysdeps/linux.mk

   1 # When changing this, make sure:
   2 # - to update debian/debhelper.in/libc.preinst!
   3 # - that all builds for a given gnu triplet have the same minimum version (see bug#882255)
   4 MIN_KERNEL_SUPPORTED := 3.2
   5 libc = libc6
   6
   7 # Do not build pt_chown on this platform
   8 pt_chown = no
   9 # Expect pldd on this platform
  10 pldd = yes
  11
  12 # NPTL Config
  13 threads = yes
  14
  15 ifeq ($(filter stage1 stage2,$(DEB_BUILD_PROFILES)),)
  16   libc_extra_config_options = --with-selinux $(extra_config_options)
  17 endif
  18
  19 ifndef LINUX_SOURCE
  20   ifeq ($(DEB_HOST_GNU_TYPE),$(DEB_BUILD_GNU_TYPE))
  21     LINUX_HEADERS := /usr/include
  22   else
  23     LINUX_HEADERS := /usr/$(DEB_HOST_GNU_TYPE)/include
  24   endif
  25 else
  26   LINUX_HEADERS := $(LINUX_SOURCE)/include
  27 endif
  28
  29 # Minimum Kernel supported
  30 with_headers = --with-headers=$(shell pwd)/debian/include --enable-kernel=$(call xx,MIN_KERNEL_SUPPORTED)
  31
  32 KERNEL_HEADER_DIR = $(stamp)mkincludedir
  33 $(stamp)mkincludedir:
  34         rm -rf debian/include
  35         mkdir debian/include
  36
  37         # Kernel and library headers
  38         for h in arch asm asm-generic libaudit.h linux selinux sys/capability.h ; do \
  39             mkdir -p debian/include/$$(dirname $$h) ; \
  40             if [ -e "$(LINUX_HEADERS)/$$h" ]; then \
  41                 ln -s $(LINUX_HEADERS)/$$h debian/include/$$h ; \
  42             elif [ -e "/usr/include/$(DEB_HOST_MULTIARCH)/$$h" ]; then \
  43                 ln -s /usr/include/$(DEB_HOST_MULTIARCH)/$$h debian/include/$$h ; \
  44             elif [ -e "/usr/include/$$h" ]; then \
  45                 ln -s /usr/include/$$h debian/include/$$h ; \
  46             fi ; \
  47         done
  48
  49         # To make configure happy if libc6-dev is not installed.
  50         touch debian/include/assert.h
  51
  52         touch $@
  53
  54 # Also to make configure happy.
  55 export CPPFLAGS = -isystem $(shell pwd)/debian/include
  56
  57 # This round of ugliness decomposes the Linux kernel version number
  58 # into an integer so it can be easily compared and then does so.
  59 CURRENT_KERNEL_VERSION=$(shell uname -r)
  60 define kernel_check
  61 (minimum=$$((`echo $(1) | sed 's/^\([0-9]*\.[0-9]*\)\([^.0-9]\|$$\)/\1.0\2/; s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 10000 + \2 \* 100 + \3/'`)); \
  62 current=$$((`echo $(CURRENT_KERNEL_VERSION) | sed 's/^\([0-9]*\.[0-9]*\)\([^.0-9]\|$$\)/\1.0\2/; s/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \* 10000 + \2 \* 100 + \3/'`)); \
  63 if [ $$current -lt $$minimum ]; then \
  64   false; \
  65 fi)
  66 endef