cf8fd1a708
The FIEMAP_EXTENT_SHARED fiemap flag was introduced in 2.6.33. If the headers do not provide the definition, the build will fail. The support of the fiemap sharing depends on the running kernel. There are still systems with 2.6.32 kernel headers but running newer versions. To support such environment, don't fail build, provide own defintion of the structure and detect if there's an old kernel in use in the relevant command (btrfs fi du). Reported-by: Abhay Sachan <lkp.abhay@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
229 lines
6.1 KiB
Plaintext
229 lines
6.1 KiB
Plaintext
AC_INIT([btrfs-progs],
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m4_esyscmd([./version.sh --configure]),
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[linux-btrfs@vger.kernel.org],,
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[http://btrfs.wiki.kernel.org])
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if test "x$PACKAGE_URL" = "x"; then
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AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
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fi
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dnl library version
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LIBBTRFS_MAJOR=0
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LIBBTRFS_MINOR=1
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LIBBTRFS_PATCHLEVEL=1
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CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
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AC_SUBST([CFLAGS])
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AC_PREREQ([2.60])
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AC_CONFIG_AUX_DIR([config])
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dnl AC_USE_SYSTEM_EXTENSIONS must be called before any macros that run
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dnl the compiler (like AC_PROG_LIBTOOL) to avoid autoconf errors.
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AC_USE_SYSTEM_EXTENSIONS
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AC_CONFIG_SRCDIR([btrfs.c])
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AC_PREFIX_DEFAULT([/usr/local])
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AC_PROG_CC
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AC_CANONICAL_HOST
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AC_C_CONST
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AC_C_VOLATILE
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AC_C_BIGENDIAN
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AC_SYS_LARGEFILE
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_CHECK_TOOL([AR], [ar])
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AC_PATH_PROG([RM], [rm], [rm])
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AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
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AC_CHECK_FUNCS([openat], [],
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[AC_MSG_ERROR([cannot find openat() function])])
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m4_ifndef([PKG_PROG_PKG_CONFIG],
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[m4_fatal([Could not locate the pkg-config autoconf
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macros. These are usually located in /usr/share/aclocal/pkg.m4.
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If your macros are in a different location, try setting the
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environment variable AL_OPTS="-I/other/macro/dir" before running
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./autogen.sh or autoreconf again.])])
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PKG_PROG_PKG_CONFIG
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dnl
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dnl Calls pkg-config --static
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dnl
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AC_DEFUN([PKG_STATIC], [
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if AC_RUN_LOG([pkg-config --exists --print-errors "$2"]); then
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$1=`pkg-config --libs --static "$2"`
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AC_SUBST([$1])
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else
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AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
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fi
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])
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AC_ARG_ENABLE([backtrace],
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AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
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[], [enable_backtrace=yes]
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)
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AS_IF([test "x$enable_backtrace" = xno], [
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AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
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])
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if test "x$enable_backtrace" = xyes; then
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AC_CHECK_HEADERS([execinfo.h])
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AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
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AC_MSG_ERROR([standard library does not have backtrace support]))
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fi
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AC_ARG_ENABLE([documentation],
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AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
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[], [enable_documentation=yes]
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)
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AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
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AC_SUBST([DISABLE_DOCUMENTATION])
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dnl detect tools to build documentation
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if test "x$enable_documentation" = xyes; then
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AC_PATH_PROG([ASCIIDOC], [asciidoc], [asciidoc])
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AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
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AC_PATH_PROG([GZIP], [gzip], [gzip])
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AC_PATH_PROG([MV], [mv], [mv])
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AC_PROG_SED
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fi
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AC_ARG_ENABLE([convert],
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AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
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[], [enable_convert=yes]
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)
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AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
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AC_SUBST([DISABLE_BTRFSCONVERT])
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AC_ARG_WITH([convert],
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AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
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supported (comma separated list): ext2]),
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[], [with_convert=auto]
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)
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if test "$with_convert" = "yes"; then
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with_convert=auto
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fi
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if test "$with_convert" = "no"; then
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with_convert=
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fi
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convertfs=
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BTRFSCONVERT_EXT2=0
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if test "x$enable_convert" = xyes; then
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if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
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PKG_CHECK_MODULES(EXT2FS, [ext2fs >= 1.42],,
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[PKG_CHECK_MODULES(EXT2FS, [ext2fs],
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[AC_DEFINE([HAVE_OLD_E2FSPROGS], [1],
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[E2fsprogs does not support BIGALLOC])]
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)])
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PKG_CHECK_MODULES(COM_ERR, [com_err])
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convertfs="${convertfs:+$convertfs,}ext2"
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BTRFSCONVERT_EXT2=1
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fi
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fi
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AC_SUBST([BTRFSCONVERT_EXT2])
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# catch typos
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tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/,\+/,/')
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if ! test "x$tmp" = "x"; then
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AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
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fi
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if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
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AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
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fi
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HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
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AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
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[HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
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AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
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if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
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AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
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else
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AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
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fi
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dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
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dnl
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dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
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dnl execution with error. The static libs are optional.
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PKG_CHECK_MODULES(BLKID, [blkid])
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PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
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PKG_CHECK_MODULES(UUID, [uuid])
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PKG_STATIC(UUID_LIBS_STATIC, [uuid])
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PKG_CHECK_MODULES(ZLIB, [zlib])
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PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
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# udev v190 introduced the btrfs builtin and a udev rule to use it.
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# Our udev rule gives us the friendly dm names but isn't required (or valid)
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# on earlier releases.
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UDEVDIR=
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if pkg-config udev --atleast-version 190; then
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UDEVDIR="$(pkg-config udev --variable=udevdir)"
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fi
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AC_SUBST(UDEVDIR)
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dnl lzo library does not provide pkg-config, let use classic way
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AC_CHECK_LIB([lzo2], [lzo_version], [
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LZO2_LIBS="-llzo2"
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LZO2_CFLAGS=""
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LZO2_LIBS_STATIC="-llzo2"],[
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AC_MSG_ERROR([cannot find lzo2 library])
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])
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AC_SUBST([LZO2_LIBS])
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AC_SUBST([LZO2_LIBS_STATIC])
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AC_SUBST([LZO2_CFLAGS])
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dnl library stuff
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AC_SUBST([LIBBTRFS_MAJOR])
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AC_SUBST([LIBBTRFS_MINOR])
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AC_SUBST([LIBBTRFS_PATCHLEVEL])
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_FILES([
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Makefile
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Documentation/Makefile
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version.h
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])
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AC_OUTPUT
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AC_MSG_RESULT([
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${PACKAGE_NAME} ${PACKAGE_VERSION}
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prefix: ${prefix}
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exec prefix: ${exec_prefix}
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bindir: ${bindir}
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libdir: ${libdir}
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includedir: ${includedir}
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compiler: ${CC}
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cflags: ${CFLAGS}
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ldflags: ${LDFLAGS}
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documentation: ${enable_documentation}
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backtrace support: ${enable_backtrace}
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btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)}
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Type 'make' to compile.
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])
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