2 m4_esyscmd([./version.sh --configure]),
3 [linux-btrfs@vger.kernel.org],,
4 [http://btrfs.wiki.kernel.org])
6 if test "x$PACKAGE_URL" = "x"; then
7 AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
15 CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
20 AC_CONFIG_AUX_DIR([config])
21 dnl AC_USE_SYSTEM_EXTENSIONS must be called before any macros that run
22 dnl the compiler (like AC_PROG_LIBTOOL) to avoid autoconf errors.
23 AC_USE_SYSTEM_EXTENSIONS
25 AC_CONFIG_SRCDIR([btrfs.c])
26 AC_PREFIX_DEFAULT([/usr/local])
38 AC_CHECK_TOOL([AR], [ar])
39 AC_PATH_PROG([RM], [rm], [rm])
40 AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
42 AC_CHECK_FUNCS([openat], [],
43 [AC_MSG_ERROR([cannot find openat() function])])
45 m4_ifndef([PKG_PROG_PKG_CONFIG],
46 [m4_fatal([Could not locate the pkg-config autoconf
47 macros. These are usually located in /usr/share/aclocal/pkg.m4.
48 If your macros are in a different location, try setting the
49 environment variable AL_OPTS="-I/other/macro/dir" before running
50 ./autogen.sh or autoreconf again.])])
55 dnl Calls pkg-config --static
57 AC_DEFUN([PKG_STATIC], [
58 if AC_RUN_LOG([pkg-config --exists --print-errors "$2"]); then
59 $1=`pkg-config --libs --static "$2"`
62 AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
67 AC_ARG_ENABLE([backtrace],
68 AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
69 [], [enable_backtrace=yes]
72 AS_IF([test "x$enable_backtrace" = xno], [
73 AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
76 if test "x$enable_backtrace" = xyes; then
77 AC_CHECK_HEADERS([execinfo.h])
78 AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
79 AC_MSG_ERROR([standard library does not have backtrace support]))
83 AC_ARG_ENABLE([documentation],
84 AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
85 [], [enable_documentation=yes]
87 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
88 AC_SUBST([DISABLE_DOCUMENTATION])
90 dnl detect tools to build documentation
91 if test "x$enable_documentation" = xyes; then
92 AC_PATH_PROG([ASCIIDOC], [asciidoc], [asciidoc])
93 AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
94 AC_PATH_PROG([GZIP], [gzip], [gzip])
95 AC_PATH_PROG([MV], [mv], [mv])
99 AC_ARG_ENABLE([convert],
100 AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
101 [], [enable_convert=yes]
104 AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
105 AC_SUBST([DISABLE_BTRFSCONVERT])
107 AC_ARG_WITH([convert],
108 AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
109 supported (comma separated list): ext2]),
110 [], [with_convert=auto]
113 if test "$with_convert" = "yes"; then
117 if test "$with_convert" = "no"; then
123 if test "x$enable_convert" = xyes; then
124 if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
125 PKG_CHECK_MODULES(EXT2FS, [ext2fs >= 1.42],,
126 [PKG_CHECK_MODULES(EXT2FS, [ext2fs],
127 [AC_DEFINE([HAVE_OLD_E2FSPROGS], [1],
128 [E2fsprogs does not support BIGALLOC])]
130 PKG_CHECK_MODULES(COM_ERR, [com_err])
131 convertfs="${convertfs:+$convertfs,}ext2"
135 AC_SUBST([BTRFSCONVERT_EXT2])
138 tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/,\+/,/')
139 if ! test "x$tmp" = "x"; then
140 AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
143 if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
144 AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
147 HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
148 AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
149 [HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
150 AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
152 if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
153 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
155 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
158 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
160 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
161 dnl execution with error. The static libs are optional.
163 PKG_CHECK_MODULES(BLKID, [blkid])
164 PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
166 PKG_CHECK_MODULES(UUID, [uuid])
167 PKG_STATIC(UUID_LIBS_STATIC, [uuid])
169 PKG_CHECK_MODULES(ZLIB, [zlib])
170 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
172 # udev v190 introduced the btrfs builtin and a udev rule to use it.
173 # Our udev rule gives us the friendly dm names but isn't required (or valid)
174 # on earlier releases.
176 if pkg-config udev --atleast-version 190; then
177 UDEVDIR="$(pkg-config udev --variable=udevdir)"
181 dnl lzo library does not provide pkg-config, let use classic way
182 AC_CHECK_LIB([lzo2], [lzo_version], [
185 LZO2_LIBS_STATIC="-llzo2"],[
186 AC_MSG_ERROR([cannot find lzo2 library])
188 AC_SUBST([LZO2_LIBS])
189 AC_SUBST([LZO2_LIBS_STATIC])
190 AC_SUBST([LZO2_CFLAGS])
194 AC_SUBST([LIBBTRFS_MAJOR])
195 AC_SUBST([LIBBTRFS_MINOR])
196 AC_SUBST([LIBBTRFS_PATCHLEVEL])
198 AC_CONFIG_HEADERS([config.h])
202 Documentation/Makefile
209 ${PACKAGE_NAME} ${PACKAGE_VERSION}
212 exec prefix: ${exec_prefix}
216 includedir: ${includedir}
222 documentation: ${enable_documentation}
223 backtrace support: ${enable_backtrace}
224 btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)}
226 Type 'make' to compile.