2 m4_chomp(m4_include([VERSION])),
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])
43 AC_CHECK_FUNCS([openat], [],
44 [AC_MSG_ERROR([cannot find openat() function])])
46 AC_CHECK_FUNCS([reallocarray])
48 m4_ifndef([PKG_PROG_PKG_CONFIG],
49 [m4_fatal([Could not locate the pkg-config autoconf
50 macros. These are usually located in /usr/share/aclocal/pkg.m4.
51 If your macros are in a different location, try setting the
52 environment variable AL_OPTS="-I/other/macro/dir" before running
53 ./autogen.sh or autoreconf again.])])
58 dnl Calls pkg-config --static
60 AC_DEFUN([PKG_STATIC], [
61 if AC_RUN_LOG([${PKG_CONFIG} --exists --print-errors "$2"]); then
62 $1=`${PKG_CONFIG} --libs --static "$2"`
65 AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
70 AC_ARG_ENABLE([backtrace],
71 AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
72 [], [enable_backtrace=yes]
75 AS_IF([test "x$enable_backtrace" = xno], [
76 AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
79 if test "x$enable_backtrace" = xyes; then
80 AC_CHECK_HEADERS([execinfo.h])
81 AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
82 AC_MSG_ERROR([standard library does not have backtrace support]))
86 AC_ARG_ENABLE([documentation],
87 AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
88 [], [enable_documentation=yes]
90 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
91 AC_SUBST([DISABLE_DOCUMENTATION])
93 dnl detect tools to build documentation
95 if test "x$enable_documentation" = xyes; then
96 AC_PATH_PROG([XMLTO], [xmlto])
97 if test -z "$XMLTO"; then
98 AC_MSG_ERROR([cannot find xmlto, cannot build documentation])
101 AC_PATH_PROG([GZIP], [gzip], [gzip])
102 AC_PATH_PROG([MV], [mv], [mv])
104 AC_PATH_PROG([ASCIIDOC], [asciidoc])
105 AC_PATH_PROG([ASCIIDOCTOR], [asciidoctor])
107 dnl asciidoc is preferred
108 if test -n "$ASCIIDOC"; then
109 ASCIIDOC_TOOL="asciidoc"
111 if test -n "$ASCIIDOCTOR"; then
112 ASCIIDOC_TOOL="asciidoctor"
114 AC_MSG_ERROR([cannot find asciidoc or asciidoctor, cannot build documentation])
118 AC_SUBST([ASCIIDOC_TOOL])
120 AC_ARG_ENABLE([convert],
121 AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
122 [], [enable_convert=yes]
125 AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
126 AC_SUBST([DISABLE_BTRFSCONVERT])
128 AC_ARG_WITH([convert],
129 AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
130 supported (comma separated list): ext2,reiserfs]),
131 [], [with_convert=auto]
134 if test "$with_convert" = "yes"; then
138 if test "$with_convert" = "no"; then
144 BTRFSCONVERT_REISERFS=0
145 if test "x$enable_convert" = xyes; then
146 if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
147 PKG_CHECK_MODULES(EXT2FS, [ext2fs >= 1.42],,
148 [PKG_CHECK_MODULES(EXT2FS, [ext2fs],
149 [AC_DEFINE([HAVE_OLD_E2FSPROGS], [1],
150 [E2fsprogs does not support BIGALLOC])]
152 PKG_CHECK_MODULES(COM_ERR, [com_err])
153 convertfs="${convertfs:+$convertfs,}ext2"
156 if test "x$with_convert" = "xauto"; then
157 PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
158 [BTRFSCONVERT_REISERFS=1],
159 [BTRFSCONVERT_REISERFS=0])
160 elif echo "$with_convert" | grep -q "reiserfs"; then
161 PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
162 [BTRFSCONVERT_REISERFS=1],[])
164 if test "$BTRFSCONVERT_REISERFS" = 1; then
165 convertfs="${convertfs:+$convertfs,}reiserfs"
168 AC_SUBST([BTRFSCONVERT_EXT2])
169 AC_SUBST([BTRFSCONVERT_REISERFS])
172 tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/reiserfs//' | sed -e 's/,\+//')
173 if ! test "x$tmp" = "x"; then
174 AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
177 if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
178 AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
181 HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
182 AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
183 [HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
184 AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
186 if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
187 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
189 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
192 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
194 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
195 dnl execution with error. The static libs are optional.
197 PKG_CHECK_MODULES(BLKID, [blkid])
198 PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
200 PKG_CHECK_MODULES(UUID, [uuid])
201 PKG_STATIC(UUID_LIBS_STATIC, [uuid])
203 PKG_CHECK_MODULES(ZLIB, [zlib])
204 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
206 AC_ARG_ENABLE([zstd],
207 AS_HELP_STRING([--disable-zstd], [build without zstd support]),
208 [], [enable_zstd=yes]
211 if test "x$enable_zstd" = xyes; then
212 PKG_CHECK_MODULES(ZSTD, [libzstd >= 1.0.0])
213 PKG_STATIC(ZSTD_LIBS_STATIC, [libzstd])
216 AS_IF([test "x$enable_zstd" = xyes], [BTRFSRESTORE_ZSTD=1], [BTRFSRESTORE_ZSTD=0])
217 AC_SUBST(BTRFSRESTORE_ZSTD)
219 AC_ARG_ENABLE([python],
220 AS_HELP_STRING([--disable-python], [do not build libbtrfsutil Python bindings]),
221 [], [enable_python=yes]
224 if test "x$enable_python" = xyes; then
225 AM_PATH_PYTHON([3.4])
226 PKG_CHECK_MODULES(PYTHON, [python-${PYTHON_VERSION}])
229 AS_IF([test "x$enable_python" = xyes], [PYTHON_BINDINGS=1], [PYTHON_BINDINGS=0])
230 AC_SUBST(PYTHON_BINDINGS)
233 # udev v190 introduced the btrfs builtin and a udev rule to use it.
234 # Our udev rule gives us the friendly dm names but isn't required (or valid)
235 # on earlier releases.
237 if ${PKG_CONFIG} udev --atleast-version 190; then
238 UDEVDIR="$(${PKG_CONFIG} udev --variable=udevdir)"
242 dnl lzo library does not provide pkg-config, let use classic way
243 AC_CHECK_LIB([lzo2], [lzo_version], [
246 LZO2_LIBS_STATIC="-llzo2"],[
247 AC_MSG_ERROR([cannot find lzo2 library])
249 AC_SUBST([LZO2_LIBS])
250 AC_SUBST([LZO2_LIBS_STATIC])
251 AC_SUBST([LZO2_CFLAGS])
255 AC_SUBST([LIBBTRFS_MAJOR])
256 AC_SUBST([LIBBTRFS_MINOR])
257 AC_SUBST([LIBBTRFS_PATCHLEVEL])
259 AC_CONFIG_HEADERS([config.h])
263 Documentation/Makefile
270 ${PACKAGE_NAME} ${PACKAGE_VERSION}
273 exec prefix: ${exec_prefix}
277 includedir: ${includedir}
283 documentation: ${enable_documentation}
284 doc generator: ${ASCIIDOC_TOOL}
285 backtrace support: ${enable_backtrace}
286 btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)}
287 btrfs-restore zstd: ${enable_zstd}
288 Python bindings: ${enable_python}
289 Python interpreter: ${PYTHON}
291 Type 'make' to compile.