mirror of
https://github.com/nilfs-dev/nilfs-utils.git
synced 2026-01-26 05:37:51 +00:00
00adeaa0e9
Recent distributions, such as Fedora Rawhide, have fully merged /sbin
and /usr/sbin into /usr/bin. In this configuration, /usr/sbin is a
symbolic link to bin.
In this environment, if nilfs-utils is configured to install binaries
into /usr/bin, the current logic to create compatibility symlinks in
/usr/sbin causes a critical issue: it overwrites the actual installed
binaries with symbolic links to themselves (e.g., /usr/sbin/nilfs-clean
points to ../bin/nilfs-clean, which are the same file).
Fix this by detecting if /usr/sbin and /usr/bin identify the same
directory. If they are the same, disable the creation of compatibility
symlinks to avoid this overwrite.
Also, update the README file to clarify that compatibility symbolic
links are created only if /usr/sbin is distinct from /usr/bin.
Fixes: 160ab60d4959 ("build: support UsrMerge and Bin-Sbin merge with automatic detection")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
377 lines
12 KiB
Plaintext
377 lines
12 KiB
Plaintext
dnl configure.ac
|
|
dnl
|
|
dnl Copyright (C) 2007-2012 Nippon Telegraph and Telephone Corporation.
|
|
|
|
# -*- Autoconf -*-
|
|
# Process this file with autoconf to produce a configure script.
|
|
|
|
AC_PREREQ(2.60)
|
|
AC_INIT([NILFS utils],[2.3.0-dev],[linux-nilfs@vger.kernel.org])
|
|
AM_INIT_AUTOMAKE
|
|
AC_CONFIG_SRCDIR([config.h.in])
|
|
AC_CONFIG_HEADERS([config.h])
|
|
AC_CONFIG_MACRO_DIR([m4])
|
|
|
|
# Checks for programs.
|
|
AC_PROG_CC
|
|
AM_PROG_CC_C_O
|
|
AC_PROG_CPP
|
|
AC_PROG_INSTALL
|
|
AC_PROG_LN_S
|
|
AC_PROG_MAKE_SET
|
|
AC_USE_SYSTEM_EXTENSIONS
|
|
LT_PREREQ([2.4])
|
|
LT_INIT([disable-static])
|
|
AC_PATH_PROG([LDCONFIG], [ldconfig],
|
|
[AC_MSG_ERROR([ldconfig not found])],
|
|
[$PATH:/usr/sbin:/sbin])
|
|
|
|
dnl --------------------------------------------------------------------------
|
|
dnl NILFS_UTILS_DEFINE_HAVE_LIB(PREFIX)
|
|
dnl
|
|
dnl Helper macro to define HAVE_LIB<PREFIX> with a standard description.
|
|
dnl Arguments:
|
|
dnl $1 : PREFIX (e.g., UUID) - used to name HAVE_LIB* variable.
|
|
dnl --------------------------------------------------------------------------
|
|
AC_DEFUN([NILFS_UTILS_DEFINE_HAVE_LIB], [
|
|
dnl Generate library name for description (e.g., uuid)
|
|
m4_pushdef([lib_name], m4_tolower([$1]))
|
|
|
|
AC_DEFINE(AS_TR_CPP([HAVE_LIB$1]), 1,
|
|
[Define to 1 if you have the ']lib_name[' library (-l]lib_name[).])
|
|
|
|
m4_popdef([lib_name])
|
|
])
|
|
|
|
dnl --------------------------------------------------------------------------
|
|
dnl NILFS_UTILS_PKG_CHECK(PREFIX, MODULE, FALLBACK_ACTION)
|
|
dnl
|
|
dnl Arguments:
|
|
dnl $1 : PREFIX (e.g., UUID) - Used to name HAVE_LIB* variable, etc.
|
|
dnl $2 : MODULE (e.g., uuid) - pkg-config module name
|
|
dnl $3 : FALLBACK_ACTION - Code to run if pkg-config fails or is missing
|
|
dnl --------------------------------------------------------------------------
|
|
AC_DEFUN([NILFS_UTILS_PKG_CHECK], [
|
|
dnl Generate a temporary variable name (e.g., have_uuid_pkg_config)
|
|
m4_pushdef([have_pkg_var], [have_]m4_tolower([$1])[_pkg_config])
|
|
|
|
have_pkg_var=no
|
|
|
|
dnl Try pkg-config if available
|
|
m4_ifdef([PKG_CHECK_MODULES], [
|
|
PKG_CHECK_MODULES([$1], [$2], [
|
|
have_pkg_var=yes
|
|
NILFS_UTILS_DEFINE_HAVE_LIB([$1])
|
|
], [have_pkg_var=no])
|
|
], [have_pkg_var=no])
|
|
|
|
dnl Fallback if pkg-config failed or was not available
|
|
AS_IF([test "x$have_pkg_var" = "xno"], [
|
|
$3
|
|
])
|
|
|
|
m4_popdef([have_pkg_var])
|
|
])
|
|
|
|
# Check for options.
|
|
AC_ARG_WITH([libmount],
|
|
AS_HELP_STRING([--without-libmount],
|
|
[compile mount.nilfs2 without libmount support]),
|
|
[], with_libmount=yes)
|
|
|
|
AC_ARG_WITH([selinux],
|
|
AS_HELP_STRING([--without-selinux], [compile without SELinux support]),
|
|
[], with_selinux=yes)
|
|
|
|
AC_ARG_WITH([blkid],
|
|
AS_HELP_STRING([--without-blkid], [compile without blkid support]),
|
|
[], with_blkid=yes)
|
|
|
|
AC_ARG_WITH([pkgconfigdir],
|
|
[AS_HELP_STRING([--with-pkgconfigdir[[=DIR]]],
|
|
[directory for pkg-config files (no to disable) [default=auto]])],
|
|
[pkgconfigdir=$withval],
|
|
[pkgconfigdir=auto])
|
|
|
|
AC_ARG_ENABLE([uapi_header_install],
|
|
AS_HELP_STRING([--enable-uapi-header-install],
|
|
[install kernel uapi header files]),
|
|
[enable_uapi_header_install="${enableval}"],
|
|
[enable_uapi_header_install=no])
|
|
|
|
AC_ARG_ENABLE([usrmerge],
|
|
[AS_HELP_STRING([--enable-usrmerge[[=TYPE]]],
|
|
[set UsrMerge hierarchy type (no, sbin, bin, or auto);
|
|
'sbin' (default TYPE) installs to /usr/sbin, 'bin' installs to
|
|
/usr/bin [default=auto, which probes the system configuration]])],
|
|
[enable_usrmerge="${enableval}"],
|
|
[enable_usrmerge=auto])
|
|
|
|
# Checks for the existence of pkg-config itself
|
|
m4_ifdef([PKG_PROG_PKG_CONFIG], [PKG_PROG_PKG_CONFIG], [PKG_CONFIG=""])
|
|
|
|
AS_IF([test "x$pkgconfigdir" = "xno"], [enable_pkgconfig_output=no],
|
|
[test -n "$PKG_CONFIG"], [enable_pkgconfig_output=yes],
|
|
[test "x$pkgconfigdir" = "xyes"], [
|
|
AC_MSG_ERROR([pkg-config requested but not found])
|
|
], [
|
|
enable_pkgconfig_output=no
|
|
AC_MSG_WARN([pkg-config not found. PC file installation disabled.])
|
|
])
|
|
|
|
# Checks for UsrMerge hierarchy
|
|
AS_IF([test "x$enable_usrmerge" = "xauto"], [
|
|
AS_IF([test /usr/sbin -ef /usr/bin], [enable_usrmerge=bin],
|
|
[test -x /usr/bin/rpm && \
|
|
test "$(rpm --eval '%{_sbindir}')" = /usr/bin],
|
|
[enable_usrmerge=bin],
|
|
[test /usr/sbin/mkfs -ef /usr/bin/mkfs], [enable_usrmerge=bin],
|
|
[test /sbin -ef /usr/sbin], [enable_usrmerge=sbin],
|
|
[enable_usrmerge=no])
|
|
])
|
|
|
|
# Checks for libraries.
|
|
NILFS_UTILS_PKG_CHECK([UUID], [uuid], [
|
|
AC_CHECK_LIB([uuid], [uuid_generate], [
|
|
NILFS_UTILS_DEFINE_HAVE_LIB([UUID])
|
|
AC_SUBST(UUID_LIBS, ["-luuid"])
|
|
AC_SUBST(UUID_CFLAGS, ["-I/usr/include/uuid"])
|
|
], [
|
|
AC_MSG_ERROR([UUID library not found])
|
|
])
|
|
AC_CHECK_HEADERS([uuid/uuid.h])
|
|
])
|
|
|
|
LIB_POSIX_MQ=''
|
|
AC_CHECK_FUNC(mq_open,,
|
|
[AC_CHECK_LIB(rt, mq_open, LIB_POSIX_MQ=-lrt,
|
|
[AC_CHECK_LIB(posix4, mq_open, LIB_POSIX_MQ=-lposix4,
|
|
[AC_MSG_ERROR([posix message queue not found])])])])
|
|
AC_SUBST(LIB_POSIX_MQ)
|
|
|
|
LIB_POSIX_SEM=''
|
|
AC_CHECK_FUNC(sem_open,,
|
|
[AC_CHECK_LIB(rt, sem_open, LIB_POSIX_SEM=-lrt,
|
|
[AC_CHECK_LIB(pthread, sem_open, LIB_POSIX_SEM=-lpthread,
|
|
[AC_CHECK_LIB(posix4, sem_open, LIB_POSIX_SEM=-lposix4,
|
|
[AC_MSG_ERROR([posix semaphore not found])])])])])
|
|
AC_SUBST(LIB_POSIX_SEM)
|
|
|
|
LIB_POSIX_TIMER=''
|
|
AC_CHECK_FUNC(clock_gettime,,
|
|
[AC_CHECK_LIB(rt, clock_gettime, LIB_POSIX_TIMER=-lrt,
|
|
[AC_MSG_ERROR([clock_gettime not found])])])
|
|
AC_SUBST(LIB_POSIX_TIMER)
|
|
|
|
# Checks for header files.
|
|
AC_HEADER_SYS_WAIT
|
|
AC_CHECK_HEADERS([ctype.h err.h fcntl.h grp.h inttypes.h libintl.h limits.h \
|
|
linux/magic.h linux/types.h locale.h mntent.h mqueue.h \
|
|
paths.h poll.h pwd.h semaphore.h stddef.h stdint.h stdlib.h \
|
|
string.h strings.h sys/ioctl.h sys/mman.h sys/mount.h \
|
|
sys/sysmacros.h sys/time.h syslog.h time.h unistd.h])
|
|
|
|
# Check /etc/mtab
|
|
mtab_type=''
|
|
AC_MSG_CHECKING([for /etc/mtab])
|
|
if test -L /etc/mtab; then
|
|
AC_MSG_RESULT([symlink])
|
|
mtab_type=symlink
|
|
elif test -f /etc/mtab; then
|
|
AC_MSG_RESULT([regular file])
|
|
mtab_type=file
|
|
fi
|
|
|
|
# Check program_invocation_short_name and getprogname()
|
|
AC_CHECK_DECLS([program_invocation_short_name], [], [],
|
|
[[#include <errno.h>]])
|
|
|
|
AS_IF([test "x$ac_cv_have_decl_program_invocation_short_name" != "xyes"],
|
|
[AC_CHECK_FUNCS([getprogname])])
|
|
|
|
# Check for conditional libraries and headers.
|
|
AS_IF([test "${with_blkid}" = "yes"], [
|
|
NILFS_UTILS_PKG_CHECK([BLKID], [blkid], [
|
|
AC_CHECK_LIB(blkid, blkid_new_probe_from_filename, [
|
|
NILFS_UTILS_DEFINE_HAVE_LIB([BLKID])
|
|
AC_SUBST(BLKID_LIBS, ["-lblkid"])
|
|
AC_SUBST(BLKID_CFLAGS, ["-I/usr/include/blkid"])
|
|
], [
|
|
AC_MSG_ERROR([BLKID library not found])
|
|
], [$UUID_LIBS]) # Other libraries to link when compiling tests
|
|
|
|
AC_CHECK_HEADERS([blkid/blkid.h])
|
|
])
|
|
])
|
|
|
|
AS_IF([test "${with_libmount}" = "yes"], [
|
|
AS_IF([test "$mtab_type" = file], [
|
|
AC_MSG_WARN(m4_normalize([
|
|
Use --without-libmount option to generate mount helpers that work
|
|
with the legacy mtab file.
|
|
]))
|
|
])
|
|
|
|
NILFS_UTILS_PKG_CHECK([MOUNT], [mount], [
|
|
AC_CHECK_LIB(mount, mnt_context_do_mount, [
|
|
NILFS_UTILS_DEFINE_HAVE_LIB([MOUNT])
|
|
AC_SUBST(MOUNT_LIBS, ["-lmount $BLKID_LIBS"])
|
|
AC_SUBST(MOUNT_CFLAGS, ["-I/usr/include/libmount"])
|
|
], [
|
|
AC_MSG_ERROR([MOUNT library is enabled but libmount not found])
|
|
], [$BLKID_LIBS]) # Other libraries to link when compiling tests
|
|
|
|
AC_CHECK_HEADERS([libmount/libmount.h])
|
|
])
|
|
with_selinux=no
|
|
])
|
|
AM_CONDITIONAL(CONFIG_LIBMOUNT, [test "$with_libmount" = "yes"])
|
|
|
|
AS_IF([test "${with_selinux}" = "yes"], [
|
|
NILFS_UTILS_PKG_CHECK([SELINUX], [libselinux], [
|
|
AC_CHECK_LIB(selinux, getprevcon, [
|
|
NILFS_UTILS_DEFINE_HAVE_LIB([SELINUX])
|
|
AC_SUBST(SELINUX_LIBS, ["-lselinux"])
|
|
AC_SUBST(SELINUX_CFLAGS, [""])
|
|
], [
|
|
AC_MSG_ERROR([SELinux selected but libselinux not found])
|
|
])
|
|
AC_CHECK_HEADERS([selinux/context.h selinux/selinux.h])
|
|
])
|
|
# This function is missing in old libselinux 1.xx versions
|
|
AC_CHECK_FUNCS([security_get_initial_context])
|
|
])
|
|
|
|
AM_CONDITIONAL(CONFIG_UAPI_HEADER_INSTALL,
|
|
[test "$enable_uapi_header_install" = yes])
|
|
|
|
# Checks for typedefs, structures, and compiler characteristics.
|
|
AC_C_CONST
|
|
AC_C_INLINE
|
|
AC_TYPE_MODE_T
|
|
AC_TYPE_OFF_T
|
|
AC_TYPE_PID_T
|
|
AC_TYPE_SIZE_T
|
|
AC_TYPE_SSIZE_T
|
|
AC_STRUCT_TM
|
|
AC_C_VOLATILE
|
|
|
|
# Checks for library functions.
|
|
AC_FUNC_ALLOCA
|
|
AC_FUNC_CHOWN
|
|
AC_FUNC_ERROR_AT_LINE
|
|
AC_FUNC_FORK
|
|
AC_FUNC_LSTAT
|
|
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
|
|
AC_FUNC_MALLOC
|
|
AC_FUNC_MMAP
|
|
AC_FUNC_REALLOC
|
|
AC_FUNC_STAT
|
|
AC_FUNC_STRFTIME
|
|
AC_FUNC_VPRINTF
|
|
AC_CHECK_FUNC(posix_memalign,,
|
|
[AC_MSG_ERROR([cannot find posix_memalign() function])])
|
|
AC_CHECK_FUNCS([alarm atexit ftruncate getcwd getgrgid getmntent_r getpwuid \
|
|
gettimeofday localtime_r memmove memset pread strcasecmp \
|
|
strchr strdup strerror strrchr strsignal strstr strtok_r \
|
|
strtoul strtoull])
|
|
|
|
# Checks for system services
|
|
AC_SYS_LARGEFILE
|
|
|
|
# Install directories
|
|
AC_PREFIX_DEFAULT([/usr])
|
|
test "x$prefix" = "xNONE" && prefix="/usr"
|
|
test "x$exec_prefix" = "xNONE" && exec_prefix="${prefix}"
|
|
|
|
# Determine the location of /sbin binaries based on the --enable-usrmerge
|
|
# option
|
|
AS_CASE(["x$enable_usrmerge"],
|
|
[xbin], [
|
|
core_sbindir='${exec_prefix}/bin'
|
|
sbindir='${exec_prefix}/bin'
|
|
badblocksdir='/usr/bin'
|
|
# If /usr/sbin is effectively /usr/bin,
|
|
# we must not create compat symlinks because they would overwrite
|
|
# the actual binaries installed in /usr/bin.
|
|
AS_IF([test "/usr/sbin" -ef "/usr/bin"],
|
|
[create_compat_sbin_link=no],
|
|
[create_compat_sbin_link=yes])
|
|
],
|
|
[xsbin|xyes], [
|
|
core_sbindir='${exec_prefix}/sbin'
|
|
sbindir='${exec_prefix}/sbin'
|
|
badblocksdir='/usr/sbin'
|
|
create_compat_sbin_link=no
|
|
],
|
|
[
|
|
core_sbindir='/sbin'
|
|
sbindir='${exec_prefix}/sbin'
|
|
badblocksdir='/sbin'
|
|
create_compat_sbin_link=no
|
|
]
|
|
)
|
|
|
|
AC_SUBST([core_sbindir])
|
|
AC_SUBST([sbindir])
|
|
AC_SUBST([badblocksdir])
|
|
|
|
AM_CONDITIONAL([CREATE_COMPAT_SBIN_LINK],
|
|
[test "x$create_compat_sbin_link" = "xyes"])
|
|
|
|
# Automatic detection of library installation directory
|
|
|
|
AS_CASE(["$ac_configure_args"], [*--libdir*], [user_specified_libdir=yes],
|
|
[user_specified_libdir=no])
|
|
|
|
AS_IF([test "x$user_specified_libdir" = "xno" && \
|
|
test "x$libdir" = 'x${exec_prefix}/lib' && \
|
|
test "x$cross_compiling" = "xno"], [
|
|
AC_MSG_CHECKING([for architecture-specific library directory])
|
|
detected_libdir=""
|
|
|
|
AS_IF(
|
|
# 1. Primary: systemd-path (available on most modern distros)
|
|
[command -v systemd-path >/dev/null 2>&1],
|
|
[detected_libdir=$(systemd-path system-library-arch 2>/dev/null)],
|
|
|
|
# 2. Fallback: use rpm --eval for RPM-based systems
|
|
[command -v rpm >/dev/null 2>&1],
|
|
[detected_libdir=$(rpm --eval '%{_libdir}' 2>/dev/null)]
|
|
)
|
|
|
|
AS_IF([test "x$detected_libdir" != "x"], [
|
|
libdir="$detected_libdir"
|
|
AC_MSG_RESULT([$libdir (detected)])
|
|
], [
|
|
AC_MSG_RESULT([$libdir (default)])
|
|
])
|
|
])
|
|
|
|
AC_SUBST([libdir])
|
|
|
|
AC_SUBST([sysconfdir], [/etc])
|
|
AC_SUBST([localstatedir], [/var])
|
|
|
|
AS_IF([test "x$enable_pkgconfig_output" = "xyes"], [
|
|
AS_IF([test "x$pkgconfigdir" = "xyes" || test "x$pkgconfigdir" = "xauto"],
|
|
[pkgconfigdir='${libdir}/pkgconfig'])
|
|
|
|
AC_SUBST([pkgconfigdir])
|
|
AC_CONFIG_FILES([lib/nilfs.pc lib/nilfsgc.pc])
|
|
])
|
|
|
|
AM_CONDITIONAL([INSTALL_PKGCONFIG],
|
|
[test "x$enable_pkgconfig_output" = "xyes"])
|
|
|
|
AC_CONFIG_FILES([Makefile
|
|
bin/Makefile
|
|
etc/Makefile
|
|
include/Makefile
|
|
lib/Makefile
|
|
man/Makefile
|
|
sbin/Makefile
|
|
sbin/mount/Makefile
|
|
scripts/Makefile])
|
|
AC_OUTPUT
|