btrfs-progs/configure.ac
Jeff Mahoney eb7b42003a btrfs-progs: build: detect whether -std=gnu90 is supported
GCC releases prior to 4.5.0 don't support -std=gnu90 so btrfs-progs won't
build at all on older distros.  We can detect whether the compiler
supports -std=gnu90 and fall back to -std=gnu89 if it doesn't.

AX_CHECK_COMPILE_FLAG is the right way to do this, but it depends on
autoconf 2.64.  AX_GCC_VERSION has been deprecated, so we'll use that
only for earlier autoconf versions so we can drop it when we drop
support for older autoconf releases.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-06-07 16:37:35 +02:00

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AC_INIT([btrfs-progs],
m4_flatten(m4_include([VERSION])),
[linux-btrfs@vger.kernel.org],,
[http://btrfs.wiki.kernel.org])
if test "x$PACKAGE_URL" = "x"; then
AC_DEFINE([PACKAGE_URL], ["http://btrfs.wiki.kernel.org"], [URL])
fi
dnl library version
LIBBTRFS_MAJOR=0
LIBBTRFS_MINOR=1
LIBBTRFS_PATCHLEVEL=2
CFLAGS=${CFLAGS:-"-g -O1 -Wall -D_FORTIFY_SOURCE=2"}
AC_SUBST([CFLAGS])
AC_PREREQ([2.60])
AC_CONFIG_AUX_DIR([config])
dnl AC_USE_SYSTEM_EXTENSIONS must be called before any macros that run
dnl the compiler (like AC_PROG_LIBTOOL) to avoid autoconf errors.
AC_USE_SYSTEM_EXTENSIONS
AC_CONFIG_SRCDIR([btrfs.c])
AC_PREFIX_DEFAULT([/usr/local])
AC_PROG_CC
BTRFS_DETECT_CSTD
AC_CANONICAL_HOST
AC_C_CONST
AC_C_VOLATILE
AC_C_BIGENDIAN
AC_SYS_LARGEFILE
AC_PROG_INSTALL
AC_PROG_LN_S
AC_CHECK_TOOL([AR], [ar])
AC_PATH_PROG([RM], [rm], [rm])
AC_PATH_PROG([RMDIR], [rmdir], [rmdir])
AC_CHECK_FUNCS([openat], [],
[AC_MSG_ERROR([cannot find openat() function])])
AC_CHECK_FUNCS([reallocarray])
m4_ifndef([PKG_PROG_PKG_CONFIG],
[m4_fatal([Could not locate the pkg-config autoconf
macros. These are usually located in /usr/share/aclocal/pkg.m4.
If your macros are in a different location, try setting the
environment variable AL_OPTS="-I/other/macro/dir" before running
./autogen.sh or autoreconf again.])])
PKG_PROG_PKG_CONFIG
dnl
dnl Calls pkg-config --static
dnl
AC_DEFUN([PKG_STATIC], [
if AC_RUN_LOG([${PKG_CONFIG} --exists --print-errors "$2"]); then
$1=`${PKG_CONFIG} --libs --static "$2"`
AC_SUBST([$1])
else
AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
fi
])
AC_ARG_ENABLE([backtrace],
AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
[], [enable_backtrace=yes]
)
AS_IF([test "x$enable_backtrace" = xno], [
AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
])
if test "x$enable_backtrace" = xyes; then
AC_CHECK_HEADERS([execinfo.h])
AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [],
AC_MSG_ERROR([standard library does not have backtrace support]))
fi
AC_ARG_ENABLE([documentation],
AS_HELP_STRING([--disable-documentation], [do not build domumentation]),
[], [enable_documentation=yes]
)
AS_IF([test "x$enable_documentation" = xyes], [DISABLE_DOCUMENTATION=0], [DISABLE_DOCUMENTATION=1])
AC_SUBST([DISABLE_DOCUMENTATION])
dnl detect tools to build documentation
ASCIIDOC_TOOL="none"
if test "x$enable_documentation" = xyes; then
AC_PATH_PROG([XMLTO], [xmlto])
if test -z "$XMLTO"; then
AC_MSG_ERROR([cannot find xmlto, cannot build documentation])
fi
AC_PATH_PROG([GZIP], [gzip], [gzip])
AC_PATH_PROG([MV], [mv], [mv])
AC_PROG_SED
AC_PATH_PROG([ASCIIDOC], [asciidoc])
AC_PATH_PROG([ASCIIDOCTOR], [asciidoctor])
dnl asciidoc is preferred
if test -n "$ASCIIDOC"; then
ASCIIDOC_TOOL="asciidoc"
else
if test -n "$ASCIIDOCTOR"; then
ASCIIDOC_TOOL="asciidoctor"
else
AC_MSG_ERROR([cannot find asciidoc or asciidoctor, cannot build documentation])
fi
fi
fi
AC_SUBST([ASCIIDOC_TOOL])
AC_ARG_ENABLE([convert],
AS_HELP_STRING([--disable-convert], [do not build btrfs-convert]),
[], [enable_convert=yes]
)
AS_IF([test "x$enable_convert" = xyes], [DISABLE_BTRFSCONVERT=0], [DISABLE_BTRFSCONVERT=1])
AC_SUBST([DISABLE_BTRFSCONVERT])
AC_ARG_WITH([convert],
AS_HELP_STRING([[[]--with-convert[[=auto]]]], [built-in filesystems for convert (default: auto)
supported (comma separated list): ext2,reiserfs]),
[], [with_convert=auto]
)
if test "$with_convert" = "yes"; then
with_convert=auto
fi
if test "$with_convert" = "no"; then
with_convert=
fi
convertfs=
BTRFSCONVERT_EXT2=0
BTRFSCONVERT_REISERFS=0
if test "x$enable_convert" = xyes; then
if test "x$with_convert" = "xauto" || echo "$with_convert" | grep -q "ext2"; then
PKG_CHECK_MODULES(EXT2FS, [ext2fs])
PKG_CHECK_MODULES(COM_ERR, [com_err])
convertfs="${convertfs:+$convertfs,}ext2"
BTRFSCONVERT_EXT2=1
fi
if test "x$with_convert" = "xauto"; then
PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
[BTRFSCONVERT_REISERFS=1],
[BTRFSCONVERT_REISERFS=0])
elif echo "$with_convert" | grep -q "reiserfs"; then
PKG_CHECK_MODULES(REISERFS, [reiserfscore >= 3.6.27],
[BTRFSCONVERT_REISERFS=1],[])
fi
if test "$BTRFSCONVERT_REISERFS" = 1; then
convertfs="${convertfs:+$convertfs,}reiserfs"
fi
fi
AC_SUBST([BTRFSCONVERT_EXT2])
AC_SUBST([BTRFSCONVERT_REISERFS])
# catch typos
tmp=$(echo "$with_convert" | sed -e 's/auto//' | sed -e 's/ext2//' | sed -e 's/reiserfs//' | sed -e 's/,\+//')
if ! test "x$tmp" = "x"; then
AC_MSG_ERROR([unknown tokens for --with-convert: $tmp])
fi
if test "$DISABLE_BTRFSCONVERT" = 0 && test "x$convertfs" = "x"; then
AC_MSG_ERROR([no filesystems for convert, use --disable-convert instead])
fi
HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=0
AX_CHECK_DEFINE([linux/fiemap.h], [FIEMAP_EXTENT_SHARED], [],
[HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE=1
AC_MSG_WARN([no definition of FIEMAP_EXTENT_SHARED found, probably old kernel, will use own defintion, 'btrfs fi du' might report wrong numbers])])
if test "x$HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE" == "x1"; then
AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [1], [We defined FIEMAP_EXTENT_SHARED])
else
AC_DEFINE([HAVE_OWN_FIEMAP_EXTENT_SHARED_DEFINE], [0], [We did not define FIEMAP_EXTENT_SHARED])
fi
dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
dnl
dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
dnl execution with error. The static libs are optional.
PKG_CHECK_MODULES(BLKID, [blkid])
PKG_STATIC(BLKID_LIBS_STATIC, [blkid])
PKG_CHECK_MODULES(UUID, [uuid])
PKG_STATIC(UUID_LIBS_STATIC, [uuid])
PKG_CHECK_MODULES(ZLIB, [zlib])
PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
AC_ARG_ENABLE([zstd],
AS_HELP_STRING([--disable-zstd], [build without zstd support]),
[], [enable_zstd=yes]
)
if test "x$enable_zstd" = xyes; then
PKG_CHECK_MODULES(ZSTD, [libzstd >= 1.0.0])
PKG_STATIC(ZSTD_LIBS_STATIC, [libzstd])
fi
AS_IF([test "x$enable_zstd" = xyes], [BTRFSRESTORE_ZSTD=1], [BTRFSRESTORE_ZSTD=0])
AC_SUBST(BTRFSRESTORE_ZSTD)
AC_ARG_ENABLE([python],
AS_HELP_STRING([--disable-python], [do not build libbtrfsutil Python bindings]),
[], [enable_python=yes]
)
if test "x$enable_python" = xyes; then
AM_PATH_PYTHON([3.4])
PKG_CHECK_MODULES(PYTHON, [python-${PYTHON_VERSION}])
fi
AS_IF([test "x$enable_python" = xyes], [PYTHON_BINDINGS=1], [PYTHON_BINDINGS=0])
AC_SUBST(PYTHON_BINDINGS)
AC_SUBST(PYTHON)
# udev v190 introduced the btrfs builtin and a udev rule to use it.
# Our udev rule gives us the friendly dm names but isn't required (or valid)
# on earlier releases.
UDEVDIR=
if ${PKG_CONFIG} udev --atleast-version 190; then
UDEVDIR="$(${PKG_CONFIG} udev --variable=udevdir)"
fi
AC_SUBST(UDEVDIR)
dnl lzo library does not provide pkg-config, let use classic way
AC_CHECK_LIB([lzo2], [lzo_version], [
LZO2_LIBS="-llzo2"
LZO2_CFLAGS=""
LZO2_LIBS_STATIC="-llzo2"],[
AC_MSG_ERROR([cannot find lzo2 library])
])
AC_SUBST([LZO2_LIBS])
AC_SUBST([LZO2_LIBS_STATIC])
AC_SUBST([LZO2_CFLAGS])
dnl library stuff
AC_SUBST([LIBBTRFS_MAJOR])
AC_SUBST([LIBBTRFS_MINOR])
AC_SUBST([LIBBTRFS_PATCHLEVEL])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([
Makefile.inc
Documentation/Makefile
version.h
])
AC_OUTPUT
AC_MSG_RESULT([
${PACKAGE_NAME} ${PACKAGE_VERSION}
prefix: ${prefix}
exec prefix: ${exec_prefix}
bindir: ${bindir}
libdir: ${libdir}
includedir: ${includedir}
compiler: ${CC}
cflags: ${CFLAGS}
ldflags: ${LDFLAGS}
documentation: ${enable_documentation}
doc generator: ${ASCIIDOC_TOOL}
backtrace support: ${enable_backtrace}
btrfs-convert: ${enable_convert} ${convertfs:+($convertfs)}
btrfs-restore zstd: ${enable_zstd}
Python bindings: ${enable_python}
Python interpreter: ${PYTHON}
Type 'make' to compile.
])