LU-1199 build: Untangle the ldiskfs build system from lustre

[fs/lustre-release.git] / ldiskfs / build / autoconf / ldiskfs-build.m4

diff --git a/ldiskfs/build/autoconf/ldiskfs-build.m4 b/ldiskfs/build/autoconf/ldiskfs-build.m4
new file mode 100644 (file)
index 0000000..cc55395
--- /dev/null
+++ b/ldiskfs/build/autoconf/ldiskfs-build.m4
@@ -0,0 +1,164 @@
+#
+# LB_DOWNSTREAM_RELEASE
+#
+AC_DEFUN([LB_DOWNSTREAM_RELEASE],
+[AC_ARG_WITH([downstream-release],
+       AC_HELP_STRING([--with-downstream-release=string],
+                      [set a string in the BUILD_VERSION and RPM Release: (default is nothing)]),
+       [DOWNSTREAM_RELEASE=$with_downstream_release],
+       [
+       # if not specified, see if it's in the META file
+       if test -f META; then
+               DOWNSTREAM_RELEASE=$(sed -ne '/^LOCAL_VERSION =/s/.*= *//p' META)
+       fi
+       ])
+AC_SUBST(DOWNSTREAM_RELEASE)
+])
+
+#
+# LB_BUILDID
+#
+# Check if the source is a GA release and if not, set a "BUILDID"
+#
+# Currently there are at least two ways/modes of/for doing this.  One
+# is if we are in a valid git repository, the other is if we are in a
+# non-git source tree of some form.  Building the latter from the former
+# will be handled here.
+AC_DEFUN([LB_BUILDID],
+[
+AC_MSG_CHECKING([for buildid])
+BUILDID=""
+if git branch >/dev/null 2>&1; then
+       ffw=0
+       hash=""
+       ver=$(git describe --match v[[0-9]]_*_[[0-9]]* --tags)
+       if [[[ $ver = *-*-* ]]]; then
+               hash=${ver##*-}
+               ffw=${ver#*-}
+               ffw=${ffw%-*}
+               ver=${ver%%-*}
+       fi
+       # it's tempting to use [[ $ver =~ ^v([0-9]+_)+([0-9]+|RC[0-9]+)$ ]]
+       # here but the portability of the regex on the right is dismal
+       # (thanx suse)
+       if echo "$ver" | egrep -q "^v([[0-9]]+_)+([[0-9]]+|RC[[0-9]]+)$"; then
+               ver=$(echo $ver | sed -e 's/^v\(.*\)/\1/' \
+                                     -e 's/_RC[[0-9]].*$//' -e 's/_/./g')
+       fi
+
+       # a "lustre fix" value of .0 should be truncated
+       if [[[ $ver = *.*.*.0 ]]]; then
+               ver=${ver%.0}
+       fi
+       # ditto for a "lustre fix" value of _0
+       if [[[ $ver = v*_*_*_0 ]]]; then
+               ver=${ver%_0}
+       fi
+       if [[[ $ver = v*_*_* ]]]; then
+               ver=${ver#v}
+               ver=${ver//_/.}
+       fi
+
+       if test "$ffw" != "0"; then
+               BUILDID="$hash"
+               msg="$BUILDID (ahead by $ffw commits)"
+               AC_MSG_RESULT([$msg])
+       else
+               AC_MSG_RESULT([none... congratulations, you must be on a tag])
+       fi
+elif test -f META; then
+       BUILDID=$(sed -ne '/^BUILDID =/s/.*= *//p' META)
+       msg="$BUILDID (from META file)"
+       AC_MSG_RESULT([$msg])
+else
+       AC_MSG_WARN([FIXME: I don't know how to deal with source trees outside of git that don't have a META file.  Not setting a buildid.])
+fi
+AC_SUBST(BUILDID)
+])
+
+#
+# LB_CHECK_FILE
+#
+# Check for file existance even when cross compiling
+#
+AC_DEFUN([LB_CHECK_FILE],
+[AS_VAR_PUSHDEF([lb_File], [lb_cv_file_$1])dnl
+AC_CACHE_CHECK([for $1], lb_File,
+[if test -r "$1"; then
+       AS_VAR_SET(lb_File, yes)
+else
+       AS_VAR_SET(lb_File, no)
+fi])
+AS_IF([test AS_VAR_GET(lb_File) = yes], [$2], [$3])[]dnl
+AS_VAR_POPDEF([lb_File])dnl
+])# LB_CHECK_FILE
+
+#
+# LB_CONFIG_HEADERS
+#
+# add -include config.h
+#
+AC_DEFUN([LB_CONFIG_HEADERS],[
+       AC_CONFIG_HEADERS([config.h])
+       CPPFLAGS="-include $PWD/config.h $CPPFLAGS"
+       EXTRA_KCFLAGS="-include $PWD/config.h $EXTRA_KCFLAGS"
+       AC_SUBST(EXTRA_KCFLAGS)
+])
+
+#
+# LB_INCLUDE_RULES
+#
+# defines for including the toplevel Rules
+#
+AC_DEFUN([LB_INCLUDE_RULES],[
+       INCLUDE_RULES="include $PWD/Rules"
+       AC_SUBST(INCLUDE_RULES)
+])
+
+#
+# LB_PROG_CC
+#
+# checks on the C compiler
+#
+AC_DEFUN([LB_PROG_CC],
+[AC_PROG_RANLIB
+
+# ---------  unsigned long long sane? -------
+AC_CHECK_SIZEOF(unsigned long long, 0)
+echo "---> size SIZEOF $SIZEOF_unsigned_long_long"
+echo "---> size SIZEOF $ac_cv_sizeof_unsigned_long_long"
+if test $ac_cv_sizeof_unsigned_long_long != 8 ; then
+       AC_MSG_ERROR([** we assume that sizeof(long long) == 8.])
+fi
+
+if test $target_cpu == "powerpc64"; then
+       AC_MSG_WARN([set compiler with -m64])
+       CFLAGS="$CFLAGS -m64"
+       CC="$CC -m64"
+fi
+
+LLCPPFLAGS="-D__arch_lib__ -D_LARGEFILE64_SOURCE=1"
+AC_SUBST(LLCPPFLAGS)
+
+# Add _GNU_SOURCE for strnlen on linux
+LLCFLAGS="-g -Wall -fPIC -D_GNU_SOURCE"
+AC_SUBST(LLCFLAGS)
+
+CCASFLAGS="-Wall -fPIC -D_GNU_SOURCE"
+AC_SUBST(CCASFLAGS)
+])
+
+#
+# LB_CONFIG_FILES
+#
+# build-specific config files
+#
+AC_DEFUN([LB_CONFIG_FILES],
+[
+       AC_CONFIG_FILES([
+               Makefile
+               autoMakefile]
+               [Rules:build/Rules.in]
+               AC_PACKAGE_TARNAME[.spec]
+       )
+])