AIX build #374 + use statfs() if statvfs() not found

README.md

@@ -3,7 +3,7 @@
 Why use ugrep?
 --------------
 
-- Ugrep is a true drop-in replacement for GNU grep (assuming you [rename or symlink `ugrep` to `grep`, `egrep` and `fgrep`](#grep)), unlike many other popular grep claiming to be "grep alternatives" or "replacements" when those actually implement incompatible command-line options and use a different, incompatible regex matcher i.e. Perl regex versus POSIX regex grep (ugrep supports both)
+- Ugrep is a true drop-in replacement for GNU grep (assuming you [copy or symlink `ug` to `grep`, `egrep` and `fgrep`](#grep)), unlike many other popular grep claiming to be "grep alternatives" or "replacements" when those actually implement incompatible command-line options and use a different, incompatible regex matcher i.e. Perl regex versus POSIX regex grep (ugrep supports both)
 
 - Ugrep is fast, user-friendly, and equipped with a ton of new features that users wanted
 

config.h.in

@@ -82,6 +82,9 @@
 /* Define to 1 if you have the `setpriority' function. */
 #undef HAVE_SETPRIORITY
 
+/* Define to 1 if you have the `statfs' function. */
+#undef HAVE_STATFS
+
 /* Define to 1 if you have the `statvfs' function. */
 #undef HAVE_STATVFS
 
@@ -131,6 +134,9 @@
    */
 #undef HAVE_SYS_DIR_H
 
+/* Define to 1 if you have the <sys/mount.h> header file. */
+#undef HAVE_SYS_MOUNT_H
+
 /* Define to 1 if you have the <sys/ndir.h> header file, and it defines `DIR'.
    */
 #undef HAVE_SYS_NDIR_H

configure

@@ -5531,23 +5531,29 @@ fi
 rm -f conftest.mmap conftest.txt
 
 
-ac_fn_cxx_check_header_compile "$LINENO" "sys/statvfs.h" "ac_cv_header_sys_statvfs_h" "$ac_includes_default"
-if test "x$ac_cv_header_sys_statvfs_h" = xyes
-then :
-  printf "%s\n" "#define HAVE_SYS_STATVFS_H 1" >>confdefs.h
-
-fi
 ac_fn_cxx_check_header_compile "$LINENO" "sys/time.h" "ac_cv_header_sys_time_h" "$ac_includes_default"
 if test "x$ac_cv_header_sys_time_h" = xyes
 then :
   printf "%s\n" "#define HAVE_SYS_TIME_H 1" >>confdefs.h
 
+fi
+ac_fn_cxx_check_header_compile "$LINENO" "sys/statvfs.h" "ac_cv_header_sys_statvfs_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_statvfs_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_STATVFS_H 1" >>confdefs.h
+
 fi
 ac_fn_cxx_check_header_compile "$LINENO" "sys/param.h" "ac_cv_header_sys_param_h" "$ac_includes_default"
 if test "x$ac_cv_header_sys_param_h" = xyes
 then :
   printf "%s\n" "#define HAVE_SYS_PARAM_H 1" >>confdefs.h
 
+fi
+ac_fn_cxx_check_header_compile "$LINENO" "sys/mount.h" "ac_cv_header_sys_mount_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_mount_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_SYS_MOUNT_H 1" >>confdefs.h
+
 fi
 ac_fn_cxx_check_header_compile "$LINENO" "sys/cpuset.h" "ac_cv_header_sys_cpuset_h" "$ac_includes_default"
 if test "x$ac_cv_header_sys_cpuset_h" = xyes
@@ -5569,6 +5575,12 @@ then :
 fi
 
 
+ac_fn_cxx_check_func "$LINENO" "statfs" "ac_cv_func_statfs"
+if test "x$ac_cv_func_statfs" = xyes
+then :
+  printf "%s\n" "#define HAVE_STATFS 1" >>confdefs.h
+
+fi
 ac_fn_cxx_check_func "$LINENO" "statvfs" "ac_cv_func_statvfs"
 if test "x$ac_cv_func_statvfs" = xyes
 then :

configure.ac

@@ -18,9 +18,9 @@ AC_STRUCT_DIRENT_D_TYPE
 
 AC_FUNC_MMAP
 
-AC_CHECK_HEADERS([sys/statvfs.h sys/time.h sys/param.h sys/cpuset.h sys/resource.h sched.h])
+AC_CHECK_HEADERS([sys/time.h sys/statvfs.h sys/param.h sys/mount.h sys/cpuset.h sys/resource.h sched.h])
 
-AC_CHECK_FUNCS([statvfs])
+AC_CHECK_FUNCS([statfs statvfs])
 
 AX_PTHREAD