btrfs-progs doc: emphasis that only mounted device works for btrfs device stats
[platform/upstream/btrfs-progs.git] / configure.ac
1 AC_INIT([btrfs-progs],
2         m4_esyscmd([./version.sh --configure]),
3         [linux-btrfs@vger.kernel.org],,
4         [http://btrfs.wiki.kernel.org])
5
6 if test "x$PACKAGE_URL" = "x"; then
7         AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
8 fi
9
10 dnl library version
11 LIBBTRFS_MAJOR=0
12 LIBBTRFS_MINOR=1
13 LIBBTRFS_PATCHLEVEL=1
14
15 CFLAGS=${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])
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_PATH_PROG([AR], [ar])
39 AC_PATH_PROG([RM], [rm], [rm])
40 AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
41
42 AC_CHECK_FUNCS([openat], [],
43         [AC_MSG_ERROR([cannot find openat() function])])
44
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.])])
51 PKG_PROG_PKG_CONFIG
52
53
54 dnl
55 dnl Calls pkg-config --static
56 dnl
57 AC_DEFUN([PKG_STATIC], [
58   if AC_RUN_LOG([pkg-config --exists --print-errors "$2"]); then
59     $1=`pkg-config --libs --static "$2"`
60     AC_SUBST([$1])
61   else
62     AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
63   fi
64 ])
65
66
67 AC_ARG_ENABLE([backtrace],
68   AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
69   [], [enable_backtrace=yes]
70 )
71
72 AS_IF([test "x$enable_backtrace" = xno], [
73   AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
74 ])
75
76 if test "x$enable_backtrace" = xyes; then
77         AC_CHECK_HEADERS([execinfo.h])
78         AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
79               AC_MSG_ERROR([standard library does not have backtrace support]))
80 fi
81
82
83 AC_ARG_ENABLE([documentation],
84               AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
85   [], [enable_documentation=yes]
86 )
87 AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
88 AC_SUBST([DISABLE_DOCUMENTATION])
89
90 dnl detect tools to build documentation
91 if test "x$enable_documentation" = xyes; then
92         AC_PATH_PROG([ASCIIDOC], [asciidoc], [asciidoc])
93         AC_PATH_PROG([XMLTO], [xmlto], [xmlto])
94         AC_PATH_PROG([GZIP], [gzip], [gzip])
95         AC_PATH_PROG([MV], [mv], [mv])
96         AC_PROG_SED
97 fi
98
99 AC_ARG_ENABLE([convert],
100               AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
101   [], [enable_convert=yes]
102 )
103
104 AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
105 AC_SUBST([DISABLE_BTRFSCONVERT])
106
107 if test "x$enable_convert" = xyes; then
108         PKG_CHECK_MODULES(EXT2FS, [ext2fs])
109         PKG_CHECK_MODULES(COM_ERR, [com_err])
110 fi
111
112
113 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
114 dnl
115 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
116 dnl execution with error. The static libs are optional.
117
118 PKG_CHECK_MODULES(BLKID, [blkid])
119 PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
120
121 PKG_CHECK_MODULES(UUID, [uuid])
122 PKG_STATIC(UUID_LIBS_STATIC, [uuid])
123
124 PKG_CHECK_MODULES(ZLIB, [zlib])
125 PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
126
127 dnl lzo library does not provide pkg-config, let use classic way
128 AC_CHECK_LIB([lzo2], [lzo_version], [
129         LZO2_LIBS="-llzo2"
130         LZO2_CFLAGS=""
131         LZO2_LIBS_STATIC="-llzo2"],[
132         AC_MSG_ERROR([cannot find lzo2 library])
133 ])
134 AC_SUBST([LZO2_LIBS])
135 AC_SUBST([LZO2_LIBS_STATIC])
136 AC_SUBST([LZO2_CFLAGS])
137
138
139 dnl library stuff
140 AC_SUBST([LIBBTRFS_MAJOR])
141 AC_SUBST([LIBBTRFS_MINOR])
142 AC_SUBST([LIBBTRFS_PATCHLEVEL])
143
144 AC_CONFIG_HEADERS([config.h])
145
146 AC_CONFIG_FILES([
147 Makefile
148 Documentation/Makefile
149 version.h
150 ])
151
152 AC_OUTPUT
153
154 AC_MSG_RESULT([
155         ${PACKAGE_NAME} ${PACKAGE_VERSION}
156
157         prefix:            ${prefix}
158         exec prefix:       ${exec_prefix}
159
160         bindir:            ${bindir}
161         libdir:            ${libdir}
162         includedir:        ${includedir}
163
164         compiler:          ${CC}
165         cflags:            ${CFLAGS}
166         ldflags:           ${LDFLAGS}
167
168         documentaton:      ${enable_documentation}
169         backtrace support: ${enable_backtrace}
170         btrfs-convert:     ${enable_convert}
171
172         Type 'make' to compile.
173 ])
174