configure.ac

   1 AC_INIT([btrfs-progs],
   2         m4_chomp(m4_include([VERSION])),
   3         [linux-btrfs@vger.kernel.org],,
   4         [http://btrfs.wiki.kernel.org])
   5
   6 if test "x$PACKAGE_URL" = "x"; then
   7         AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
   8 fi
   9
  10 dnl library version
  11 LIBBTRFS_MAJOR=0
  12 LIBBTRFS_MINOR=1
  13 LIBBTRFS_PATCHLEVEL=2
  14
  15 CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
  16 AC_SUBST([CFLAGS])
  17
  18 AC_PREREQ([2.60])
  19
  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
  24
  25 AC_CONFIG_SRCDIR([btrfs.c])
  26 AC_PREFIX_DEFAULT([/usr/local])
  27
  28 AC_PROG_CC
  29 AC_CANONICAL_HOST
  30 AC_C_CONST
  31 AC_C_VOLATILE
  32 AC_C_BIGENDIAN
  33
  34 AC_SYS_LARGEFILE
  35
  36 AC_PROG_INSTALL
  37 AC_PROG_LN_S
  38 AC_CHECK_TOOL([AR], [ar])
  39 AC_PATH_PROG([RM], [rm], [rm])
  40 AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
  41
  42
  43 AC_CHECK_FUNCS([openat], [],
  44         [AC_MSG_ERROR([cannot find openat() function])])
  45
  46 AC_CHECK_FUNCS([reallocarray])
  47
  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.])])
  54 PKG_PROG_PKG_CONFIG
  55
  56
  57 dnl
  58 dnl Calls pkg-config --static
  59 dnl
  60 AC_DEFUN([PKG_STATIC], [
  61   if AC_RUN_LOG([${PKG_CONFIG} --exists --print-errors "$2"]); then
  62     $1=`${PKG_CONFIG} --libs --static "$2"`
  63     AC_SUBST([$1])
  64   else
  65     AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
  66   fi
  67 ])
  68
  69
  70 AC_ARG_ENABLE([backtrace],
  71   AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
  72   [], [enable_backtrace=yes]
  73 )
  74
  75 AS_IF([test "x$enable_backtrace" = xno], [
  76   AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
  77 ])
  78
  79 if test "x$enable_backtrace" = xyes; then
  80         AC_CHECK_HEADERS([execinfo.h])
  81         AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
  82               AC_MSG_ERROR([standard library does not have backtrace support]))
  83 fi
  84
  85
  86 AC_ARG_ENABLE([documentation],
  87               AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
  88   [], [enable_documentation=yes]
  89 )
  90 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
  91 AC_SUBST([DISABLE_DOCUMENTATION])
  92
  93 dnl detect tools to build documentation
  94 ASCIIDOC_TOOL="none"
  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])
  99         fi
 100
 101         AC_PATH_PROG([GZIP], [gzip], [gzip])
 102         AC_PATH_PROG([MV], [mv], [mv])
 103         AC_PROG_SED
 104         AC_PATH_PROG([ASCIIDOC], [asciidoc])
 105         AC_PATH_PROG([ASCIIDOCTOR], [asciidoctor])
 106
 107         dnl asciidoc is preferred
 108         if test -n "$ASCIIDOC"; then
 109                 ASCIIDOC_TOOL="asciidoc"
 110         else
 111                 if test -n "$ASCIIDOCTOR"; then
 112                         ASCIIDOC_TOOL="asciidoctor"
 113                 else
 114                         AC_MSG_ERROR([cannot find asciidoc or asciidoctor, cannot build documentation])
 115                 fi
 116         fi
 117 fi
 118 AC_SUBST([ASCIIDOC_TOOL])
 119
 120 AC_ARG_ENABLE([convert],
 121               AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
 122   [], [enable_convert=yes]
 123 )
 124
 125 AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
 126 AC_SUBST([DISABLE_BTRFSCONVERT])
 127
 128 AC_ARG_WITH([convert],
 129             AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
 130 supported (comma separated list): ext2,reiserfs]),
 131   [], [with_convert=auto]
 132 )
 133
 134 if test "$with_convert" = "yes"; then
 135         with_convert=auto
 136 fi
 137
 138 if test "$with_convert" = "no"; then
 139         with_convert=
 140 fi
 141
 142 convertfs=
 143 BTRFSCONVERT_EXT2=0
 144 BTRFSCONVERT_REISERFS=0
 145 if test "x$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])]
 151                                 )])
 152                 PKG_CHECK_MODULES(COM_ERR, [com_err])
 153                 convertfs="${convertfs:+$convertfs,}ext2"
 154                 BTRFSCONVERT_EXT2=1
 155         fi
 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],[])
 163         fi
 164         if test "$BTRFSCONVERT_REISERFS" = 1; then
 165                 convertfs="${convertfs:+$convertfs,}reiserfs"
 166         fi
 167 fi
 168 AC_SUBST([BTRFSCONVERT_EXT2])
 169 AC_SUBST([BTRFSCONVERT_REISERFS])
 170
 171 # catch typos
 172 tmp=$(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: $tmp])
 175 fi
 176
 177 if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
 178         AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
 179 fi
 180
 181 HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
 182 AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
 183                 [HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
 184                  AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
 185
 186 if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
 187 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
 188 else
 189 AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
 190 fi
 191
 192 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
 193 dnl
 194 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
 195 dnl execution with error. The static libs are optional.
 196
 197 PKG_CHECK_MODULES(BLKID, [blkid])
 198 PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
 199
 200 PKG_CHECK_MODULES(UUID, [uuid])
 201 PKG_STATIC(UUID_LIBS_STATIC, [uuid])
 202
 203 PKG_CHECK_MODULES(ZLIB, [zlib])
 204 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
 205
 206 AC_ARG_ENABLE([zstd],
 207         AS_HELP_STRING([--disable-zstd], [build without zstd support]),
 208         [], [enable_zstd=yes]
 209 )
 210
 211 if test "x$enable_zstd" = xyes; then
 212         PKG_CHECK_MODULES(ZSTD, [libzstd >= 1.0.0])
 213         PKG_STATIC(ZSTD_LIBS_STATIC, [libzstd])
 214 fi
 215
 216 AS_IF([test "x$enable_zstd" = xyes], [BTRFSRESTORE_ZSTD=1], [BTRFSRESTORE_ZSTD=0])
 217 AC_SUBST(BTRFSRESTORE_ZSTD)
 218
 219 AC_ARG_ENABLE([python],
 220         AS_HELP_STRING([--disable-python], [do not build libbtrfsutil Python bindings]),
 221         [], [enable_python=yes]
 222 )
 223
 224 if test "x$enable_python" = xyes; then
 225         AM_PATH_PYTHON([3.4])
 226         PKG_CHECK_MODULES(PYTHON, [python-${PYTHON_VERSION}])
 227 fi
 228
 229 AS_IF([test "x$enable_python" = xyes], [PYTHON_BINDINGS=1], [PYTHON_BINDINGS=0])
 230 AC_SUBST(PYTHON_BINDINGS)
 231 AC_SUBST(PYTHON)
 232
 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.
 236 UDEVDIR=
 237 if ${PKG_CONFIG} udev --atleast-version 190; then
 238         UDEVDIR="$(${PKG_CONFIG} udev --variable=udevdir)"
 239 fi
 240 AC_SUBST(UDEVDIR)
 241
 242 dnl lzo library does not provide pkg-config, let use classic way
 243 AC_CHECK_LIB([lzo2], [lzo_version], [
 244         LZO2_LIBS="-llzo2"
 245         LZO2_CFLAGS=""
 246         LZO2_LIBS_STATIC="-llzo2"],[
 247         AC_MSG_ERROR([cannot find lzo2 library])
 248 ])
 249 AC_SUBST([LZO2_LIBS])
 250 AC_SUBST([LZO2_LIBS_STATIC])
 251 AC_SUBST([LZO2_CFLAGS])
 252
 253
 254 dnl library stuff
 255 AC_SUBST([LIBBTRFS_MAJOR])
 256 AC_SUBST([LIBBTRFS_MINOR])
 257 AC_SUBST([LIBBTRFS_PATCHLEVEL])
 258
 259 AC_CONFIG_HEADERS([config.h])
 260
 261 AC_CONFIG_FILES([
 262 Makefile.inc
 263 Documentation/Makefile
 264 version.h
 265 ])
 266
 267 AC_OUTPUT
 268
 269 AC_MSG_RESULT([
 270         ${PACKAGE_NAME} ${PACKAGE_VERSION}
 271
 272         prefix:             ${prefix}
 273         exec prefix:        ${exec_prefix}
 274
 275         bindir:             ${bindir}
 276         libdir:             ${libdir}
 277         includedir:         ${includedir}
 278
 279         compiler:           ${CC}
 280         cflags:             ${CFLAGS}
 281         ldflags:            ${LDFLAGS}
 282
 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}
 290
 291         Type 'make' to compile.
 292 ])