Initial commit. All spl source written up to this point wrapped

in an initial reasonable autoconf style build system.  This does
not yet build but the configure system does appear to work properly
and integrate with the kernel.  Hopefully the next commit gets
us back to a buildable version we can run the test suite against.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@1 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c

1 files changed, 133 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
new file mode 100644
index 000000000..52bc4f593
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,133 @@
+AC_INIT
+
+AC_CANONICAL_SYSTEM
+AM_INIT_AUTOMAKE(spl, 0.0.1)
+AC_CONFIG_HEADERS([config.h])
+
+AC_PROG_INSTALL
+AC_PROG_CC
+
+ver=`uname -r`
+KERNELCFLAGS=
+
+kernelsrc=
+kernelbuild=
+AC_ARG_WITH(kernel,
+	[  --with-linux=PATH      Path to kernel source ],
+	[kernelsrc="$withval"; kernelbuild="$withval"])
+AC_ARG_WITH(kernel-build,
+	[  --with-linux-obj=PATH  Path to kernel build objects ],
+	[kernelbuild="$withval"])
+
+AC_MSG_CHECKING([kernel source directory])
+if test -z "$kernelsrc"; then
+	kernelbuild=
+	sourcelink=/lib/modules/${ver}/source
+	buildlink=/lib/modules/${ver}/build
+
+	if test -e $sourcelink; then
+		kernelsrc=`(cd $sourcelink; /bin/pwd)`
+	fi
+	if test -e $buildlink; then
+		kernelbuild=`(cd $buildlink; /bin/pwd)`
+	fi
+	if test -z "$kernelsrc"; then
+		kernelsrc=$kernelbuild
+	fi
+	if test -z "$kernelsrc" -o -z "$kernelbuild"; then
+		AC_MSG_RESULT([Not found])
+		AC_MSG_ERROR([
+			*** Please specify the location of the kernel source
+			*** with the '--with-kernel=PATH' option])
+	fi
+fi
+
+AC_MSG_RESULT([$kernelsrc])
+AC_MSG_CHECKING([kernel build directory])
+AC_MSG_RESULT([$kernelbuild])
+
+AC_MSG_CHECKING([kernel source version])
+if test -r $kernelbuild/include/linux/version.h && 
+	fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
+
+	kernsrcver=`(echo "#include <linux/version.h>"; 
+	             echo "kernsrcver=UTS_RELEASE") | 
+	             cpp -I $kernelbuild/include |
+	             grep "^kernsrcver=" | cut -d \" -f 2`
+
+elif test -r $kernelbuild/include/linux/utsrelease.h && 
+	fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
+
+	kernsrcver=`(echo "#include <linux/utsrelease.h>"; 
+	             echo "kernsrcver=UTS_RELEASE") | 
+	             cpp -I $kernelbuild/include |
+	             grep "^kernsrcver=" | cut -d \" -f 2`
+fi
+
+if test -z "$kernsrcver"; then
+	AC_MSG_RESULT([Not found])
+	AC_MSG_ERROR([
+		*** Cannot determine the version of the linux kernel source.
+		*** Please prepare the kernel before running this script])
+fi
+
+AC_MSG_RESULT([$kernsrcver])
+kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
+AC_SUBST(kernelsrc)
+AC_SUBST(kmoduledir)
+
+#
+# Each version of the kernel provides a slightly different
+# ABI, so figure out what we have to work with and adapt.
+#
+AC_MSG_CHECKING([if kernel defines kzalloc function])
+if egrep -qw "kzalloc" $kernelsrc/include/linux/slab.h; then
+	AC_DEFINE(HAVE_KZALLOC, 1, [kzalloc() is defined])
+	AC_MSG_RESULT([yes])
+else
+	AC_MSG_RESULT([no])
+fi
+
+AC_MSG_CHECKING([if inode has i_private field])
+if egrep -qw "i_private" $kernelsrc/include/linux/fs.h; then
+	AC_DEFINE(HAVE_I_PRIVATE, 1, [inode has i_private field])
+	AC_MSG_RESULT([yes])
+else
+	AC_MSG_RESULT([no])
+fi
+
+AC_MSG_CHECKING([if inode has i_mutex field ])
+if egrep -qw "i_mutex" $kernelsrc/include/linux/fs.h; then
+	AC_DEFINE(HAVE_I_MUTEX, 1, [inode has i_mutex field])
+	AC_MSG_RESULT([yes])
+else
+	AC_MSG_RESULT([no])
+fi
+
+AC_MSG_CHECKING([if kernel has mutex.h ])
+if test -f $kernelsrc/include/linux/mutex.h; then
+	AC_DEFINE(HAVE_MUTEX_H, 1, [kernel has mutex.h])
+	AC_MSG_RESULT([yes])
+else
+	AC_MSG_RESULT([no])
+fi
+
+if test "$kernelbuild" != "$kernelsrc"; then
+	KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$kernelbuild"
+fi
+
+AC_SUBST(KERNELMAKE_PARAMS)
+AC_SUBST(KERNELCPPFLAGS)
+AC_SUBST(KERNELCFLAGS)
+
+AC_CONFIG_FILES([ Makefile
+                  src/Makefile
+                  src/cmd/Makefile
+                  src/spl/Makefile
+                  src/splat/Makefile
+                  include/Makefile
+                  scripts/Makefile
+                  scripts/spl.spec
+               ])
+
+AC_OUTPUT