btrfs-progs: add btrfs_clear_free_space_tree() from the kernel

[platform/upstream/btrfs-progs.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index cd33a87..9c6df3b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -3,12 +3,17 @@ AC_INIT([btrfs-progs],
        [linux-btrfs@vger.kernel.org],,
        [http://btrfs.wiki.kernel.org])
 
+if test "x$PACKAGE_URL" = "x"; then
+       AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
+fi
+
 dnl library version
 LIBBTRFS_MAJOR=0
 LIBBTRFS_MINOR=1
 LIBBTRFS_PATCHLEVEL=1
 
-CFLAGS="-g -O1"
+CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
+AC_SUBST([CFLAGS])
 
 AC_PREREQ([2.60])
 
@@ -18,7 +23,7 @@ dnl the compiler (like AC_PROG_LIBTOOL) to avoid autoconf errors.
 AC_USE_SYSTEM_EXTENSIONS
 
 AC_CONFIG_SRCDIR([btrfs.c])
-AC_PREFIX_DEFAULT([/usr])
+AC_PREFIX_DEFAULT([/usr/local])
 
 AC_PROG_CC
 AC_CANONICAL_HOST
@@ -30,7 +35,7 @@ AC_SYS_LARGEFILE
 
 AC_PROG_INSTALL
 AC_PROG_LN_S
-AC_PATH_PROG([AR], [ar])
+AC_CHECK_TOOL([AR], [ar])
 AC_PATH_PROG([RM], [rm], [rm])
 AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
 
@@ -68,6 +73,12 @@ AS_IF([test "x$enable_backtrace" = xno], [
   AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
 ])
 
+if test "x$enable_backtrace" = xyes; then
+       AC_CHECK_HEADERS([execinfo.h])
+       AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
+             AC_MSG_ERROR([standard library does not have backtrace support]))
+fi
+
 
 AC_ARG_ENABLE([documentation],
              AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
@@ -76,6 +87,73 @@ AC_ARG_ENABLE([documentation],
 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
 AC_SUBST([DISABLE_DOCUMENTATION])
 
+dnl detect tools to build documentation
+if test "x$enable_documentation" = xyes; then
+       AC_PATH_PROG([ASCIIDOC], [asciidoc], [asciidoc])
+       AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
+       AC_PATH_PROG([GZIP], [gzip], [gzip])
+       AC_PATH_PROG([MV], [mv], [mv])
+       AC_PROG_SED
+fi
+
+AC_ARG_ENABLE([convert],
+             AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
+  [], [enable_convert=yes]
+)
+
+AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
+AC_SUBST([DISABLE_BTRFSCONVERT])
+
+AC_ARG_WITH([convert],
+           AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
+supported (comma separated list): ext2]),
+  [], [with_convert=auto]
+)
+
+if test "$with_convert" = "yes"; then
+       with_convert=auto
+fi
+
+if test "$with_convert" = "no"; then
+       with_convert=
+fi
+
+convertfs=
+BTRFSCONVERT_EXT2=0
+if test "x$enable_convert" = xyes; then
+       if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
+               PKG_CHECK_MODULES(EXT2FS, [ext2fs >= 1.42],,
+                       [PKG_CHECK_MODULES(EXT2FS, [ext2fs],
+                               [AC_DEFINE([HAVE_OLD_E2FSPROGS], [1],
+                                         [E2fsprogs does not support BIGALLOC])]
+                               )])
+               PKG_CHECK_MODULES(COM_ERR, [com_err])
+               convertfs="${convertfs:+$convertfs,}ext2"
+               BTRFSCONVERT_EXT2=1
+       fi
+fi
+AC_SUBST([BTRFSCONVERT_EXT2])
+
+# catch typos
+tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/,\+/,/')
+if ! test "x$tmp" = "x"; then
+       AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
+fi
+
+if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
+       AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
+fi
+
+HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
+AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
+               [HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
+                AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
+
+if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
+AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
+else
+AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
+fi
 
 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
 dnl
@@ -91,6 +169,15 @@ PKG_STATIC(UUID_LIBS_STATIC, [uuid])
 PKG_CHECK_MODULES(ZLIB, [zlib])
 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
 
+# udev v190 introduced the btrfs builtin and a udev rule to use it.
+# Our udev rule gives us the friendly dm names but isn't required (or valid)
+# on earlier releases.
+UDEVDIR=
+if pkg-config udev --atleast-version 190; then
+       UDEVDIR="$(pkg-config udev --variable=udevdir)"
+fi
+AC_SUBST(UDEVDIR)
+
 dnl lzo library does not provide pkg-config, let use classic way
 AC_CHECK_LIB([lzo2], [lzo_version], [
        LZO2_LIBS="-llzo2"
@@ -132,6 +219,10 @@ AC_MSG_RESULT([
        cflags:            ${CFLAGS}
        ldflags:           ${LDFLAGS}
 
+       documentation:     ${enable_documentation}
+       backtrace support: ${enable_backtrace}
+       btrfs-convert:     ${enable_convert} ${convertfs:+($convertfs)}
+
        Type 'make' to compile.
 ])