autoscan errors

autoscan.sh

configure.ac: warning: missing AC_CHECK_FUNCS([memset]) wanted by: src/azurefs.cpp:1503
configure.ac: warning: missing AC_CHECK_FUNCS([mkdir]) wanted by: src/azurefs.cpp:405
configure.ac: warning: missing AC_CHECK_FUNCS([select]) wanted by: src/azurefs.cpp:2827
configure.ac: warning: missing AC_CHECK_FUNCS([strcasecmp]) wanted by: src/azurefs.cpp:105
configure.ac: warning: missing AC_CHECK_FUNCS([strchr]) wanted by: src/azurefs.cpp:4211
configure.ac: warning: missing AC_CHECK_FUNCS([strerror]) wanted by: src/azurefs.cpp:4177
configure.ac: warning: missing AC_CHECK_FUNCS([strncasecmp]) wanted by: src/string_util.cpp:105
configure.ac: warning: missing AC_CHECK_FUNCS([strstr]) wanted by: src/azurefs.cpp:1376
configure.ac: warning: missing AC_CHECK_FUNCS([strtol]) wanted by: src/azurefs.cpp:4274
configure.ac: warning: missing AC_CHECK_FUNCS([strtoul]) wanted by: src/azurefs.cpp:532
configure.ac: warning: missing AC_CHECK_FUNCS([utime]) wanted by: src/azurefs.cpp:596
configure.ac: warning: missing AC_CHECK_HEADERS([fcntl.h]) wanted by: src/curl.cpp:27
configure.ac: warning: missing AC_CHECK_HEADERS([stdlib.h]) wanted by: src/curl.cpp:23
configure.ac: warning: missing AC_CHECK_HEADERS([string.h]) wanted by: src/string_util.h:7
configure.ac: warning: missing AC_CHECK_HEADERS([sys/time.h]) wanted by: src/azurefs.h:22
configure.ac: warning: missing AC_CHECK_HEADERS([syslog.h]) wanted by: src/string_util.h:8
configure.ac: warning: missing AC_CHECK_HEADERS([unistd.h]) wanted by: src/curl.cpp:26
configure.ac: warning: missing AC_CHECK_HEADERS([utime.h]) wanted by: src/azurefs.cpp:30
configure.ac: warning: missing AC_FUNC_MALLOC wanted by: src/azurefs.cpp:129
configure.ac: warning: missing AC_FUNC_REALLOC wanted by: src/curl.cpp:305
configure.ac: warning: missing AC_HEADER_STDBOOL wanted by: src/string_util.h:21
configure.ac: warning: missing AC_PROG_CC wanted by: config.h.in
configure.ac: warning: missing AC_STRUCT_ST_BLOCKS wanted by: src/azurefs.cpp:1603
configure.ac: warning: missing AC_TYPE_MODE_T wanted by: src/azurefs.cpp:399
configure.ac: warning: missing AC_TYPE_OFF_T wanted by: src/azurefs.cpp:733
configure.ac: warning: missing AC_TYPE_SIZE_T wanted by: src/curl.cpp:301
configure.ac: warning: missing AC_TYPE_SSIZE_T wanted by: src/azurefs.cpp:1499
configure.ac: warning: missing AC_TYPE_UID_T wanted by: src/azurefs.cpp:2474