+
+ dnl Used to define SETVBUF in sys2.h.
+ dnl This evokes the following warning from autoconf:
+ dnl ...: warning: AC_TRY_RUN called without default to allow cross compiling
+ AC_FUNC_SETVBUF_REVERSED
+
+ # used by sleep and shred
+ AC_REQUIRE([gl_CLOCK_TIME])
+ AC_CHECK_FUNCS_ONCE(gettimeofday)
+ AC_FUNC_GETTIMEOFDAY_CLOBBER
+ # used by shred
+ AC_CHECK_FUNCS_ONCE(directio)
+
+ AC_REQUIRE([AC_FUNC_CLOSEDIR_VOID])
+
+ AC_CHECK_FUNCS_ONCE( \
+ endgrent \
+ endpwent \
+ ftruncate \
+ gethrtime \
+ hasmntopt \
+ isascii \
+ iswspace \
+ lchown \
+ listmntent \
+ localeconv \
+ memcpy \
+ mempcpy \
+ mkfifo \
+ mbrlen \
+ realpath \
+ sethostname \
+ strchr \
+ strerror \
+ strrchr \
+ sysctl \
+ sysinfo \
+ tcgetpgrp \
+ wcrtomb \
+ tzset \
+ )
+
+ AC_FUNC_STRTOD
+
+ AC_REQUIRE([cu_PREREQ_STAT_PROG])
+ AC_REQUIRE([GL_FUNC_GETCWD_PATH_MAX])
+ AC_REQUIRE([GL_FUNC_READDIR])
+
+ # for dd.c and shred.c
+ fetish_saved_libs=$LIBS
+ AC_SEARCH_LIBS([fdatasync], [rt posix4],
+ [test "$ac_cv_search_fdatasync" = "none required" ||
+ LIB_FDATASYNC=$ac_cv_search_fdatasync])
+ AC_SUBST([LIB_FDATASYNC])
+ AC_CHECK_FUNCS(fdatasync)
+ LIBS=$fetish_saved_libs
+
+ # See if linking `seq' requires -lm.
+ # It does on nearly every system. The single exception (so far) is
+ # BeOS which has all the math functions in the normal runtime library
+ # and doesn't have a separate math library.
+
+ AC_SUBST(SEQ_LIBM)
+ ac_seq_body='
+ static double x, y;
+ x = floor (x);
+ x = rint (x);
+ x = modf (x, &y);'
+ AC_TRY_LINK([#include <math.h>], $ac_seq_body, ,
+ [ac_seq_save_LIBS="$LIBS"
+ LIBS="$LIBS -lm"
+ AC_TRY_LINK([#include <math.h>], $ac_seq_body, SEQ_LIBM=-lm)
+ LIBS="$ac_seq_save_LIBS"
+ ])
+
+ AM_LANGINFO_CODESET
+ gl_GLIBC21
+ AM_ICONV
+ gl_FUNC_UNLINK_BUSY_TEXT
+
+ # These tests are for df.
+ AC_REQUIRE([gl_FSUSAGE])
+ AC_REQUIRE([gl_MOUNTLIST])
+ if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
+ DF_PROG='df$(EXEEXT)'
+ fi
+ AC_REQUIRE([gl_AC_DOS])
+ AC_REQUIRE([AC_FUNC_CANONICALIZE_FILE_NAME])
+
+ # If any of these functions don't exist (e.g. DJGPP 2.03),
+ # use the corresponding stub.
+ AC_CHECK_FUNC([fchdir], , [AC_LIBOBJ(fchdir-stub)])
+
+ AC_REQUIRE([gl_FUNC_FREE])
+])
+
+# These tests must be run before any use of AC_CHECK_TYPE,
+# because that macro compiles code that tests e.g., HAVE_UNISTD_H.
+# See the definition of ac_includes_default in `configure'.
+AC_DEFUN([gl_CHECK_ALL_HEADERS],
+[
+ AC_CHECK_HEADERS_ONCE( \
+ errno.h \
+ fcntl.h \
+ float.h \
+ hurd.h \
+ limits.h \
+ memory.h \
+ mntent.h \
+ mnttab.h \
+ netdb.h \
+ paths.h \
+ stdlib.h \
+ stddef.h \
+ stdint.h \
+ string.h \
+ sys/filsys.h \
+ sys/fs/s5param.h \
+ sys/fs_types.h \
+ sys/fstyp.h \
+ sys/ioctl.h \
+ sys/mntent.h \
+ sys/param.h \
+ sys/resource.h \
+ sys/socket.h \
+ sys/statfs.h \
+ sys/statvfs.h \
+ sys/systeminfo.h \
+ sys/time.h \
+ sys/timeb.h \
+ sys/vfs.h \
+ sys/wait.h \
+ syslog.h \
+ termios.h \
+ unistd.h \
+ utime.h \
+ )
+ AC_CHECK_HEADERS(sys/mount.h sys/sysctl.h, [], [],
+ [AC_INCLUDES_DEFAULT
+ [#if HAVE_SYS_PARAM_H
+ #include <sys/param.h>
+ #endif]])
+])
+
+# This macro must be invoked before any tests that run the compiler.
+AC_DEFUN([gl_CHECK_ALL_TYPES],
+[
+ dnl This test must come as early as possible after the compiler configuration
+ dnl tests, because the choice of the file model can (in principle) affect
+ dnl whether functions and headers are available, whether they work, etc.
+ AC_REQUIRE([AC_SYS_LARGEFILE])
+
+ dnl This test must precede tests of compiler characteristics like
+ dnl that for the inline keyword, since it may change the degree to
+ dnl which the compiler supports such features.
+ AC_REQUIRE([AM_C_PROTOTYPES])
+
+ dnl Checks for typedefs, structures, and compiler characteristics.
+ AC_REQUIRE([AC_C_BIGENDIAN])
+ AC_REQUIRE([AC_C_CONST])
+ AC_REQUIRE([AC_C_VOLATILE])
+ AC_REQUIRE([AC_C_INLINE])
+ AC_REQUIRE([AC_C_LONG_DOUBLE])
+
+ AC_REQUIRE([gl_CHECK_ALL_HEADERS])
+ AC_REQUIRE([AC_HEADER_DIRENT])
+ AC_REQUIRE([AC_HEADER_STDC])
+ AC_CHECK_MEMBERS(
+ [struct stat.st_author,
+ struct stat.st_blksize],,,
+ [$ac_includes_default
+#include <sys/stat.h>
+ ])
+ AC_REQUIRE([AC_STRUCT_ST_BLOCKS])
+
+ AC_REQUIRE([AC_HEADER_STAT])
+ AC_REQUIRE([AC_STRUCT_ST_MTIM_NSEC])
+ AC_REQUIRE([AC_STRUCT_ST_DM_MODE])
+
+ AC_REQUIRE([AC_TYPE_GETGROUPS])
+ AC_REQUIRE([AC_TYPE_MBSTATE_T])
+ AC_REQUIRE([AC_TYPE_MODE_T])
+ AC_REQUIRE([AC_TYPE_OFF_T])
+ AC_REQUIRE([AC_TYPE_PID_T])
+ AC_REQUIRE([AC_TYPE_SIGNAL])
+ AC_REQUIRE([AC_TYPE_SIZE_T])
+ AC_REQUIRE([AC_TYPE_UID_T])
+ AC_CHECK_TYPE(ino_t, unsigned long int)
+
+ gt_TYPE_SSIZE_T
+
+ dnl This relies on the fact that autoconf 2.14a's implementation of
+ dnl AC_CHECK_TYPE checks includes unistd.h.
+ AC_CHECK_TYPE(major_t, unsigned int)
+ AC_CHECK_TYPE(minor_t, unsigned int)
+
+ AC_REQUIRE([gl_AC_TYPE_UINT32_T])
+ AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
+ AC_REQUIRE([gl_AC_TYPE_UINTPTR_T])
+ AC_REQUIRE([gl_AC_TYPE_UNSIGNED_LONG_LONG])
+
+ AC_REQUIRE([AC_HEADER_MAJOR])
+ AC_REQUIRE([AC_HEADER_DIRENT])
+