GNOME.org
 

[libxml2] Don't check for standard C89 headers

commit 776d15d38359255434f5d55722430dfcb7b3eba5
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Wed Mar 2 00:29:17 2022 +0100

    Don't check for standard C89 headers
    
    Don't check for
    
    - ctype.h
    - errno.h
    - float.h
    - limits.h
    - math.h
    - signal.h
    - stdarg.h
    - stdlib.h
    - string.h
    - time.h
    
    Stop including non-standard headers
    
    - malloc.h
    - strings.h

 CMakeLists.txt         | 12 ----------
 HTMLparser.c           |  5 +----
 HTMLtree.c             |  5 -----
 buf.c                  |  4 ----
 c14n.c                 |  2 --
 catalog.c              |  6 ++---
 config.h.cmake.in      | 36 ------------------------------
 configure.ac           | 10 ---------
 debugXML.c             |  6 +----
 dict.c                 |  4 ----
 encoding.c             |  9 ++------
 entities.c             |  3 +--
 globals.c              |  2 --
 hash.c                 |  4 ----
 include/win32config.h  | 11 ---------
 nanoftp.c              | 12 ++--------
 nanohttp.c             | 11 ++-------
 os400/os400config.h.in | 36 ------------------------------
 parser.c               |  8 ++-----
 parserInternals.c      |  5 +----
 testC14N.c             |  5 ++---
 testHTML.c             |  5 +----
 testOOM.c              |  7 +-----
 testOOMlib.c           |  3 ---
 testReader.c           |  8 +------
 testRelax.c            |  5 +----
 testSAX.c              | 60 ++++++++------------------------------------------
 testSchemas.c          |  5 +----
 testXPath.c            |  5 +----
 threads.c              |  4 +---
 tree.c                 |  5 +----
 trio.c                 |  3 ---
 valid.c                |  3 ---
 vms/config.vms         | 30 -------------------------
 xlink.c                |  5 +----
 xmlIO.c                | 10 +--------
 xmlcatalog.c           |  3 ---
 xmllint.c              | 48 +++-------------------------------------
 xmlmemory.c            | 25 +++------------------
 xmlreader.c            |  5 -----
 xmlregexp.c            |  3 +--
 xmlschemastypes.c      | 10 +++------
 xpath.c                | 15 +++----------
 xzlib.c                |  7 +-----
 44 files changed, 49 insertions(+), 421 deletions(-)
---
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f922d5ab..7987ecbb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -160,13 +160,10 @@ else()
                set(ss_family __ss_family)
        endif()
        check_function_exists(class HAVE_CLASS)
-       check_include_files(ctype.h HAVE_CTYPE_H)
        check_include_files(dlfcn.h HAVE_DLFCN_H)
        check_library_exists(dl dlopen "" HAVE_DLOPEN)
        check_include_files(dl.h HAVE_DL_H)
-       check_include_files(errno.h HAVE_ERRNO_H)
        check_include_files(fcntl.h HAVE_FCNTL_H)
-       check_include_files(float.h HAVE_FLOAT_H)
        check_function_exists(fpclass HAVE_FPCLASS)
        check_function_exists(fprintf HAVE_FPRINTF)
        check_function_exists(ftime HAVE_FTIME)
@@ -176,10 +173,7 @@ else()
        check_function_exists(isascii HAVE_ISASCII)
        check_library_exists(history append_history "" HAVE_LIBHISTORY)
        check_library_exists(readline readline "" HAVE_LIBREADLINE)
-       check_include_files(limits.h HAVE_LIMITS_H)
        check_function_exists(localtime HAVE_LOCALTIME)
-       check_include_files(malloc.h HAVE_MALLOC_H)
-       check_include_files(math.h HAVE_MATH_H)
        check_function_exists(mmap HAVE_MMAP)
        check_function_exists(munmap HAVE_MUNMAP)
        check_include_files(netdb.h HAVE_NETDB_H)
@@ -192,18 +186,13 @@ else()
        check_function_exists(rand_r HAVE_RAND_R)
        check_include_files(resolv.h HAVE_RESOLV_H)
        check_library_exists(dld shl_load "" HAVE_SHLLOAD)
-       check_include_files(signal.h HAVE_SIGNAL_H)
        check_function_exists(snprintf HAVE_SNPRINTF)
        check_function_exists(sprintf HAVE_SPRINTF)
        check_function_exists(srand HAVE_SRAND)
        check_function_exists(sscanf HAVE_SSCANF)
        check_function_exists(stat HAVE_STAT)
-       check_include_files(stdarg.h HAVE_STDARG_H)
        check_include_files(stdint.h HAVE_STDINT_H)
-       check_include_files(stdlib.h HAVE_STDLIB_H)
        check_function_exists(strftime HAVE_STRFTIME)
-       check_include_files(strings.h HAVE_STRINGS_H)
-       check_include_files(string.h HAVE_STRING_H)
        check_include_files(sys/mman.h HAVE_SYS_MMAN_H)
        check_include_files(sys/select.h HAVE_SYS_SELECT_H)
        check_include_files(sys/socket.h HAVE_SYS_SOCKET_H)
@@ -212,7 +201,6 @@ else()
        check_include_files(sys/time.h HAVE_SYS_TIME_H)
        check_include_files(sys/types.h HAVE_SYS_TYPES_H)
        check_function_exists(time HAVE_TIME)
-       check_include_files(time.h HAVE_TIME_H)
        check_include_files(unistd.h HAVE_UNISTD_H)
        check_function_exists(va_copy HAVE_VA_COPY)
        check_function_exists(vfprintf HAVE_VFPRINTF)
diff --git a/HTMLparser.c b/HTMLparser.c
index e72f4185..e4481281 100644
--- a/HTMLparser.c
+++ b/HTMLparser.c
@@ -11,12 +11,9 @@
 #ifdef LIBXML_HTML_ENABLED
 
 #include <string.h>
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
diff --git a/HTMLtree.c b/HTMLtree.c
index b098de74..c6ca8358 100644
--- a/HTMLtree.c
+++ b/HTMLtree.c
@@ -12,13 +12,8 @@
 #ifdef LIBXML_HTML_ENABLED
 
 #include <string.h> /* for memset() only ! */
-
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/HTMLparser.h>
diff --git a/buf.c b/buf.c
index 11be3c64..f4356540 100644
--- a/buf.c
+++ b/buf.c
@@ -17,12 +17,8 @@
 
 #include <string.h> /* for memset() only ! */
 #include <limits.h>
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 #include <libxml/tree.h>
 #include <libxml/globals.h>
diff --git a/c14n.c b/c14n.c
index 82f2751f..7a3960c3 100644
--- a/c14n.c
+++ b/c14n.c
@@ -14,9 +14,7 @@
 #ifdef LIBXML_C14N_ENABLED
 #ifdef LIBXML_OUTPUT_ENABLED
 
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 #include <string.h>
 
 #include <libxml/tree.h>
diff --git a/catalog.c b/catalog.c
index 50e03533..729fa55e 100644
--- a/catalog.c
+++ b/catalog.c
@@ -16,6 +16,8 @@
 #include "libxml.h"
 
 #ifdef LIBXML_CATALOG_ENABLED
+#include <stdlib.h>
+#include <string.h>
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -28,10 +30,6 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include <string.h>
 #include <libxml/xmlmemory.h>
 #include <libxml/hash.h>
 #include <libxml/uri.h>
diff --git a/config.h.cmake.in b/config.h.cmake.in
index e0935634..bdbc50be 100644
--- a/config.h.cmake.in
+++ b/config.h.cmake.in
@@ -16,9 +16,6 @@
 /* Whether struct sockaddr::__ss_family exists */
 #cmakedefine HAVE_BROKEN_SS_FAMILY 1
 
-/* Define to 1 if you have the <ctype.h> header file. */
-#cmakedefine HAVE_CTYPE_H 1
-
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #cmakedefine HAVE_DLFCN_H 1
 
@@ -28,15 +25,9 @@
 /* Define to 1 if you have the <dl.h> header file. */
 #cmakedefine HAVE_DL_H 1
 
-/* Define to 1 if you have the <errno.h> header file. */
-#cmakedefine HAVE_ERRNO_H 1
-
 /* Define to 1 if you have the <fcntl.h> header file. */
 #cmakedefine HAVE_FCNTL_H 1
 
-/* Define to 1 if you have the <float.h> header file. */
-#cmakedefine HAVE_FLOAT_H 1
-
 /* Define to 1 if you have the `fprintf' function. */
 #cmakedefine HAVE_FPRINTF 1
 
@@ -61,18 +52,9 @@
 /* Define if readline library is there (-lreadline) */
 #cmakedefine HAVE_LIBREADLINE 1
 
-/* Define to 1 if you have the <limits.h> header file. */
-#cmakedefine HAVE_LIMITS_H 1
-
 /* Define to 1 if you have the `localtime' function. */
 #cmakedefine HAVE_LOCALTIME 1
 
-/* Define to 1 if you have the <malloc.h> header file. */
-#cmakedefine HAVE_MALLOC_H 1
-
-/* Define to 1 if you have the <math.h> header file. */
-#cmakedefine HAVE_MATH_H 1
-
 /* Define to 1 if you have the `mmap' function. */
 #cmakedefine HAVE_MMAP 1
 
@@ -114,9 +96,6 @@
 /* Have shl_load based dso */
 #cmakedefine HAVE_SHLLOAD 1
 
-/* Define to 1 if you have the <signal.h> header file. */
-#cmakedefine HAVE_SIGNAL_H 1
-
 /* Define to 1 if you have the `snprintf' function. */
 #cmakedefine HAVE_SNPRINTF 1
 
@@ -132,24 +111,12 @@
 /* Define to 1 if you have the `stat' function. */
 #cmakedefine HAVE_STAT 1
 
-/* Define to 1 if you have the <stdarg.h> header file. */
-#cmakedefine HAVE_STDARG_H 1
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #cmakedefine HAVE_STDINT_H 1
 
-/* Define to 1 if you have the <stdlib.h> header file. */
-#cmakedefine HAVE_STDLIB_H 1
-
 /* Define to 1 if you have the `strftime' function. */
 #cmakedefine HAVE_STRFTIME 1
 
-/* Define to 1 if you have the <strings.h> header file. */
-#cmakedefine HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#cmakedefine HAVE_STRING_H 1
-
 /* Define to 1 if you have the <sys/mman.h> header file. */
 #cmakedefine HAVE_SYS_MMAN_H 1
 
@@ -174,9 +141,6 @@
 /* Define to 1 if you have the `time' function. */
 #cmakedefine HAVE_TIME 1
 
-/* Define to 1 if you have the <time.h> header file. */
-#cmakedefine HAVE_TIME_H 1
-
 /* Define to 1 if you have the <unistd.h> header file. */
 #cmakedefine HAVE_UNISTD_H 1
 
diff --git a/configure.ac b/configure.ac
index 6d7018eb..68d21433 100644
--- a/configure.ac
+++ b/configure.ac
@@ -446,19 +446,10 @@ AC_HEADER_DIRENT
 AC_HEADER_STDC
 AC_CHECK_HEADERS([fcntl.h])
 AC_CHECK_HEADERS([unistd.h])
-AC_CHECK_HEADERS([ctype.h])
-AC_CHECK_HEADERS([errno.h])
-AC_CHECK_HEADERS([malloc.h])
-AC_CHECK_HEADERS([stdarg.h])
 AC_CHECK_HEADERS([sys/stat.h])
 AC_CHECK_HEADERS([sys/types.h])
 AC_CHECK_HEADERS([stdint.h])
 AC_CHECK_HEADERS([inttypes.h])
-AC_CHECK_HEADERS([time.h])
-AC_CHECK_HEADERS([math.h])
-AC_CHECK_HEADERS([limits.h])
-AC_CHECK_HEADERS([float.h])
-AC_CHECK_HEADERS([stdlib.h])
 AC_CHECK_HEADERS([sys/socket.h], [], [],
 [#if HAVE_SYS_TYPES_H
 # include <sys/types.h>
@@ -483,7 +474,6 @@ AC_CHECK_HEADERS([sys/select.h])
 AC_CHECK_HEADERS([poll.h])
 AC_CHECK_HEADERS([sys/mman.h])
 AC_CHECK_HEADERS([sys/timeb.h])
-AC_CHECK_HEADERS([signal.h])
 AC_CHECK_HEADERS([arpa/nameser.h], [], [],
 [#if HAVE_SYS_TYPES_H
 # include <sys/types.h>
diff --git a/debugXML.c b/debugXML.c
index 3f28c67d..5f73fce7 100644
--- a/debugXML.c
+++ b/debugXML.c
@@ -12,12 +12,8 @@
 #ifdef LIBXML_DEBUG_ENABLED
 
 #include <string.h>
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
+
 #include <libxml/xmlmemory.h>
 #include <libxml/tree.h>
 #include <libxml/parser.h>
diff --git a/dict.c b/dict.c
index 5e395110..60b69a4e 100644
--- a/dict.c
+++ b/dict.c
@@ -20,12 +20,8 @@
 #include "libxml.h"
 
 #include <limits.h>
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
-#ifdef HAVE_TIME_H
 #include <time.h>
-#endif
 
 /*
  * Following http://www.ocert.org/advisories/ocert-2011-003.html
diff --git a/encoding.c b/encoding.c
index bfa5a304..8b01b96c 100644
--- a/encoding.c
+++ b/encoding.c
@@ -25,18 +25,13 @@
 
 #include <string.h>
 #include <limits.h>
-
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #ifdef LIBXML_ICONV_ENABLED
-#ifdef HAVE_ERRNO_H
 #include <errno.h>
 #endif
-#endif
+
 #include <libxml/encoding.h>
 #include <libxml/xmlmemory.h>
 #ifdef LIBXML_HTML_ENABLED
diff --git a/entities.c b/entities.c
index 37163c19..84435515 100644
--- a/entities.c
+++ b/entities.c
@@ -15,9 +15,8 @@
 #include "libxml.h"
 
 #include <string.h>
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #include <libxml/xmlmemory.h>
 #include <libxml/hash.h>
 #include <libxml/entities.h>
diff --git a/globals.c b/globals.c
index 2bc3db27..4aec8123 100644
--- a/globals.c
+++ b/globals.c
@@ -14,9 +14,7 @@
 #define IN_LIBXML
 #include "libxml.h"
 
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 #include <string.h>
 
 #include <libxml/globals.h>
diff --git a/hash.c b/hash.c
index 005401b7..6562d308 100644
--- a/hash.c
+++ b/hash.c
@@ -21,12 +21,8 @@
 #include "libxml.h"
 
 #include <string.h>
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
-#ifdef HAVE_TIME_H
 #include <time.h>
-#endif
 
 /*
  * Following http://www.ocert.org/advisories/ocert-2011-003.html
diff --git a/include/win32config.h b/include/win32config.h
index 54392f49..d804404a 100644
--- a/include/win32config.h
+++ b/include/win32config.h
@@ -1,25 +1,14 @@
 #ifndef __LIBXML_WIN32_CONFIG__
 #define __LIBXML_WIN32_CONFIG__
 
-#define HAVE_CTYPE_H
-#define HAVE_STDARG_H
-#define HAVE_MALLOC_H
-#define HAVE_ERRNO_H
 #define SEND_ARG2_CAST
 #define GETHOSTBYNAME_ARG_CAST
 
-#if defined(_WIN32_WCE)
-#undef HAVE_ERRNO_H
-#include "wincecompat.h"
-#else
 #define HAVE_SYS_STAT_H
 #define HAVE_STAT
-#define HAVE_STDLIB_H
-#define HAVE_TIME_H
 #define HAVE_FCNTL_H
 #include <io.h>
 #include <direct.h>
-#endif
 
 #include <libxml/xmlversion.h>
 
diff --git a/nanoftp.c b/nanoftp.c
index bfc77b60..6de7d300 100644
--- a/nanoftp.c
+++ b/nanoftp.c
@@ -6,7 +6,6 @@
 
 #ifdef TESTING
 #define STANDALONE
-#define HAVE_STDLIB_H
 #define HAVE_UNISTD_H
 #define HAVE_SYS_SOCKET_H
 #define HAVE_NETINET_IN_H
@@ -19,10 +18,9 @@
 
 #ifdef LIBXML_FTP_ENABLED
 #include <string.h>
-
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+#include <errno.h>
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -41,9 +39,6 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
@@ -56,9 +51,6 @@
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/parser.h>
diff --git a/nanohttp.c b/nanohttp.c
index 0d0e74f8..2eafd3f4 100644
--- a/nanohttp.c
+++ b/nanohttp.c
@@ -16,10 +16,9 @@
 
 #ifdef LIBXML_HTTP_ENABLED
 #include <string.h>
-
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+#include <errno.h>
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -47,9 +46,6 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
@@ -60,9 +56,6 @@
 #else
 #include <poll.h>
 #endif
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
 #ifdef LIBXML_ZLIB_ENABLED
 #include <zlib.h>
 #endif
diff --git a/os400/os400config.h.in b/os400/os400config.h.in
index 1588cfad..1f79cb7f 100644
--- a/os400/os400config.h.in
+++ b/os400/os400config.h.in
@@ -15,9 +15,6 @@
 /* Whether struct sockaddr::__ss_family exists */
 #undef HAVE_BROKEN_SS_FAMILY
 
-/* Define to 1 if you have the <ctype.h> header file. */
-#define HAVE_CTYPE_H            1
-
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #define HAVE_DLFCN_H            1       /* Locally emulated. */
 
@@ -27,15 +24,9 @@
 /* Define to 1 if you have the <dl.h> header file. */
 #undef HAVE_DL_H
 
-/* Define to 1 if you have the <errno.h> header file. */
-#define HAVE_ERRNO_H            1
-
 /* Define to 1 if you have the <fcntl.h> header file. */
 #define HAVE_FCNTL_H            1
 
-/* Define to 1 if you have the <float.h> header file. */
-#define HAVE_FLOAT_H            1
-
 /* Define to 1 if you have the `fprintf' function. */
 #undef HAVE_FPRINTF                     /* Use trio. */
 
@@ -60,18 +51,9 @@
 /* Define if readline library is there (-lreadline) */
 #undef HAVE_LIBREADLINE
 
-/* Define to 1 if you have the <limits.h> header file. */
-#define HAVE_LIMITS_H           1
-
 /* Define to 1 if you have the `localtime' function. */
 #define HAVE_LOCALTIME          1
 
-/* Define to 1 if you have the <malloc.h> header file. */
-#undef HAVE_MALLOC_H
-
-/* Define to 1 if you have the <math.h> header file. */
-#define HAVE_MATH_H             1
-
 /* Define to 1 if you have the `mmap' function. */
 #undef HAVE_MMAP
 
@@ -116,9 +98,6 @@
 /* Have shl_load based dso */
 #undef HAVE_SHLLOAD
 
-/* Define to 1 if you have the <signal.h> header file. */
-#define HAVE_SIGNAL_H           1
-
 /* Define to 1 if you have the `snprintf' function. */
 #undef HAVE_SNPRINTF                    /* Use trio. */
 
@@ -140,24 +119,12 @@
 /* Define to 1 if you have the `stat' function. */
 #define HAVE_STAT               1
 
-/* Define to 1 if you have the <stdarg.h> header file. */
-#define HAVE_STDARG_H           1       /* Overloaded */
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #define HAVE_STDINT_H           1
 
-/* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H           1
-
 /* Define to 1 if you have the `strftime' function. */
 #define HAVE_STRFTIME           1
 
-/* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H          1
-
-/* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H           1
-
 /* Define to 1 if you have the <sys/mman.h> header file. */
 #define HAVE_SYS_MMAN_H         1
 
@@ -182,9 +149,6 @@
 /* Define to 1 if you have the `time' function. */
 #define HAVE_TIME               1
 
-/* Define to 1 if you have the <time.h> header file. */
-#define HAVE_TIME_H             1
-
 /* Define to 1 if you have the <unistd.h> header file. */
 #define HAVE_UNISTD_H           1
 
diff --git a/parser.c b/parser.c
index 3aecf3e9..97747a7a 100644
--- a/parser.c
+++ b/parser.c
@@ -49,6 +49,8 @@
 #include <string.h>
 #include <stdarg.h>
 #include <stddef.h>
+#include <ctype.h>
+#include <stdlib.h>
 #include <libxml/xmlmemory.h>
 #include <libxml/threads.h>
 #include <libxml/globals.h>
@@ -68,12 +70,6 @@
 #include <libxml/xmlschemastypes.h>
 #include <libxml/relaxng.h>
 #endif
-#ifdef HAVE_CTYPE_H
-#include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
diff --git a/parserInternals.c b/parserInternals.c
index 1421681c..d7b19b64 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -17,12 +17,9 @@
 #endif
 
 #include <string.h>
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
diff --git a/testC14N.c b/testC14N.c
index addc800e..ebd9fe01 100644
--- a/testC14N.c
+++ b/testC14N.c
@@ -11,6 +11,8 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
+
 #ifndef STDOUT_FILENO
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -21,9 +23,6 @@
 #ifdef _WIN32
 #include <io.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/parser.h>
diff --git a/testHTML.c b/testHTML.c
index ee4d3e45..5d175904 100644
--- a/testHTML.c
+++ b/testHTML.c
@@ -12,7 +12,7 @@
 
 #include <string.h>
 #include <stdarg.h>
-
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -26,9 +26,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/HTMLparser.h>
diff --git a/testOOM.c b/testOOM.c
index 9ff13f2f..dd13031b 100644
--- a/testOOM.c
+++ b/testOOM.c
@@ -10,6 +10,7 @@
 
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -17,12 +18,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
 
 #include <libxml/xmlreader.h>
 
diff --git a/testOOMlib.c b/testOOMlib.c
index 34c4aa0a..310714fa 100644
--- a/testOOMlib.c
+++ b/testOOMlib.c
@@ -9,10 +9,7 @@
 
 #include "testOOMlib.h"
 
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
-
 #include <string.h>
 
 #define _TEST_INT_MAX 2147483647
diff --git a/testReader.c b/testReader.c
index da2f1b02..70d5ee7e 100644
--- a/testReader.c
+++ b/testReader.c
@@ -11,6 +11,7 @@
 #ifdef LIBXML_READER_ENABLED
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -24,13 +25,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
 
 #include <libxml/xmlreader.h>
 
diff --git a/testRelax.c b/testRelax.c
index 3549f938..ad801b12 100644
--- a/testRelax.c
+++ b/testRelax.c
@@ -15,7 +15,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
-
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -29,9 +29,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 /* seems needed for Solaris */
diff --git a/testSAX.c b/testSAX.c
index b2d1363a..9cc72f21 100644
--- a/testSAX.c
+++ b/testSAX.c
@@ -8,20 +8,20 @@
 
 #include "libxml.h"
 
+#ifdef LIBXML_SAX1_ENABLED
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
 #ifdef HAVE_SYS_TIMEB_H
 #include <sys/timeb.h>
 #endif
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-
-#ifdef LIBXML_SAX1_ENABLED
-#include <string.h>
-#include <stdarg.h>
-
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -34,13 +34,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
 
 #include <libxml/globals.h>
 #include <libxml/xmlerror.h>
@@ -124,16 +117,13 @@ endTimer(const char *fmt, ...)
     msec *= 1000;
     msec += (end.tv_usec - begin.tv_usec) / 1000;
 
-#ifndef HAVE_STDARG_H
-#error "endTimer required stdarg functions"
-#endif
     va_start(ap, fmt);
     vfprintf(stderr, fmt, ap);
     va_end(ap);
 
     fprintf(stderr, " took %ld ms\n", msec);
 }
-#elif defined(HAVE_TIME_H)
+#else
 /*
  * No gettimeofday function, so we have to make do with calling clock.
  * This is obviously less accurate, but there's little we can do about
@@ -158,43 +148,11 @@ endTimer(const char *fmt, ...)
     end = clock();
     msec = ((end - begin) * 1000) / CLOCKS_PER_SEC;
 
-#ifndef HAVE_STDARG_H
-#error "endTimer required stdarg functions"
-#endif
     va_start(ap, fmt);
     vfprintf(stderr, fmt, ap);
     va_end(ap);
     fprintf(stderr, " took %ld ms\n", msec);
 }
-#else
-
-/*
- * We don't have a gettimeofday or time.h, so we just don't do timing
- */
-static void
-startTimer(void)
-{
-    /*
-     * Do nothing
-     */
-}
-static void XMLCDECL
-endTimer(char *format, ...)
-{
-    /*
-     * We cannot do anything because we don't have a timing function
-     */
-#ifdef HAVE_STDARG_H
-    va_start(ap, format);
-    vfprintf(stderr, format, ap);
-    va_end(ap);
-    fprintf(stderr, " was not timed\n", msec);
-#else
-    /* We don't have gettimeofday, time or stdarg.h, what crazy world is
-     * this ?!
-     */
-#endif
-}
 #endif
 
 /*
diff --git a/testSchemas.c b/testSchemas.c
index fc39862c..f79adf04 100644
--- a/testSchemas.c
+++ b/testSchemas.c
@@ -15,7 +15,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
-
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -29,9 +29,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 /* seems needed for Solaris */
diff --git a/testXPath.c b/testXPath.c
index d120f4e5..0e377237 100644
--- a/testXPath.c
+++ b/testXPath.c
@@ -10,6 +10,7 @@
 #if defined(LIBXML_XPATH_ENABLED) && defined(LIBXML_DEBUG_ENABLED)
 
 #include <string.h>
+#include <stdlib.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -23,10 +24,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
 
 #include <libxml/xpath.h>
 #include <libxml/tree.h>
diff --git a/threads.c b/threads.c
index 42ab82f4..5e4db16c 100644
--- a/threads.c
+++ b/threads.c
@@ -11,6 +11,7 @@
 #include "libxml.h"
 
 #include <string.h>
+#include <stdlib.h>
 
 #include <libxml/threads.h>
 #include <libxml/globals.h>
@@ -21,9 +22,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #elif defined HAVE_WIN32_THREADS
diff --git a/tree.c b/tree.c
index cbaec5b0..1253274f 100644
--- a/tree.c
+++ b/tree.c
@@ -21,12 +21,9 @@
 #include <string.h> /* for memset() only ! */
 #include <stddef.h>
 #include <limits.h>
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #ifdef LIBXML_ZLIB_ENABLED
 #include <zlib.h>
 #endif
diff --git a/trio.c b/trio.c
index ee270bc6..31b3b371 100644
--- a/trio.c
+++ b/trio.c
@@ -98,10 +98,7 @@
 # include <stdarg.h>
 #endif
 #include <stddef.h>
-
-#if defined( HAVE_ERRNO_H ) || defined( __VMS )
 #include <errno.h>
-#endif
 
 #ifndef NULL
 # define NULL 0
diff --git a/valid.c b/valid.c
index 25b90bca..16fa9238 100644
--- a/valid.c
+++ b/valid.c
@@ -11,10 +11,7 @@
 #include "libxml.h"
 
 #include <string.h>
-
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/hash.h>
diff --git a/vms/config.vms b/vms/config.vms
index 7f4342cd..1277114c 100755
--- a/vms/config.vms
+++ b/vms/config.vms
@@ -28,45 +28,18 @@
 /* Define if you have the <arpa/inet.h> header file.  */
 #undef HAVE_ARPA_INET_H
 
-/* Define if you have the <ctype.h> header file.  */
-#define HAVE_CTYPE_H   1
-
-/* Define if you have the <errno.h> header file.  */
-#define HAVE_ERRNO_H   1
-
 /* Define if you have the <fcntl.h> header file.  */
 #define HAVE_FCNTL_H   1
 
-/* Define if you have the <float.h> header file.  */
-#define HAVE_FLOAT_H   1
-
-/* Define if you have the <malloc.h> header file.  */
-#undef HAVE_MALLOC_H
-
-/* Define if you have the <math.h> header file.  */
-#define HAVE_MATH_H    1
-
 /* Define if you have the <netdb.h> header file.  */
 #define HAVE_NETDB_H   1
 
 /* Define if you have the <netinet/in.h> header file.  */
 #undef HAVE_NETINET_IN_H
 
-/* Define if you have the <stdarg.h> header file.  */
-#define HAVE_STDARG_H  1
-
-/* Define if you have the <stdlib.h> header file.  */
-#define HAVE_STDLIB_H  1
-
 /* Define to 1 if you have the `strftime' function. */
 #define HAVE_STRFTIME 1
 
-/* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
-
 /* Define if you have the <sys/mman.h> header file.  */
 #undef HAVE_SYS_MMAN_H
 
@@ -85,9 +58,6 @@
 /* Define if you have the <sys/types.h> header file.  */
 #undef HAVE_SYS_TYPES_H
 
-/* Define if you have the <time.h> header file.  */
-#define HAVE_TIME_H    1
-
 /* Define if you have the <unistd.h> header file.  */
 #define HAVE_UNISTD_H  1
 
diff --git a/xlink.c b/xlink.c
index 0390a387..f93c9717 100644
--- a/xlink.c
+++ b/xlink.c
@@ -13,12 +13,9 @@
 
 #ifdef LIBXML_XPTR_ENABLED
 #include <string.h> /* for memset() only */
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
+
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
 #endif
diff --git a/xmlIO.c b/xmlIO.c
index 59eb111f..a80ef11f 100644
--- a/xmlIO.c
+++ b/xmlIO.c
@@ -12,11 +12,8 @@
 #include "libxml.h"
 
 #include <string.h>
-#include <stddef.h>
-#ifdef HAVE_ERRNO_H
+#include <stdlib.h>
 #include <errno.h>
-#endif
-
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -30,9 +27,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef LIBXML_ZLIB_ENABLED
 #include <zlib.h>
 #endif
@@ -244,7 +238,6 @@ __xmlIOErr(int domain, int code, const char *extra)
     unsigned int idx;
 
     if (code == 0) {
-#ifdef HAVE_ERRNO_H
        if (errno == 0) code = 0;
 #ifdef EACCES
         else if (errno == EACCES) code = XML_IO_EACCES;
@@ -400,7 +393,6 @@ __xmlIOErr(int domain, int code, const char *extra)
         else if (errno == EAFNOSUPPORT) code = XML_IO_EAFNOSUPPORT;
 #endif
         else code = XML_IO_UNKNOWN;
-#endif /* HAVE_ERRNO_H */
     }
     idx = 0;
     if (code >= XML_IO_UNKNOWN) idx = code - XML_IO_UNKNOWN;
diff --git a/xmlcatalog.c b/xmlcatalog.c
index 7b6f3769..d4143ad1 100644
--- a/xmlcatalog.c
+++ b/xmlcatalog.c
@@ -11,10 +11,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdarg.h>
-
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 #ifdef HAVE_LIBREADLINE
 #include <readline/readline.h>
diff --git a/xmllint.c b/xmllint.c
index 07d655b2..5dcb8840 100644
--- a/xmllint.c
+++ b/xmllint.c
@@ -10,19 +10,16 @@
 
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
 #include <assert.h>
+#include <time.h>
 
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-
 #ifdef HAVE_SYS_TIMEB_H
 #include <sys/timeb.h>
 #endif
-
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -42,9 +39,6 @@
 #define MAP_FAILED ((void *) -1)
 #endif
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef HAVE_LIBREADLINE
 #include <readline/readline.h>
 #ifdef HAVE_LIBHISTORY
@@ -445,16 +439,13 @@ endTimer(const char *fmt, ...)
     msec *= 1000;
     msec += (end.tv_usec - begin.tv_usec) / 1000;
 
-#ifndef HAVE_STDARG_H
-#error "endTimer required stdarg functions"
-#endif
     va_start(ap, fmt);
     vfprintf(stderr, fmt, ap);
     va_end(ap);
 
     fprintf(stderr, " took %ld ms\n", msec);
 }
-#elif defined(HAVE_TIME_H)
+#else
 /*
  * No gettimeofday function, so we have to make do with calling clock.
  * This is obviously less accurate, but there's little we can do about
@@ -479,44 +470,11 @@ endTimer(const char *fmt, ...)
     end = clock();
     msec = ((end - begin) * 1000) / CLOCKS_PER_SEC;
 
-#ifndef HAVE_STDARG_H
-#error "endTimer required stdarg functions"
-#endif
     va_start(ap, fmt);
     vfprintf(stderr, fmt, ap);
     va_end(ap);
     fprintf(stderr, " took %ld ms\n", msec);
 }
-#else
-
-/*
- * We don't have a gettimeofday or time.h, so we just don't do timing
- */
-static void
-startTimer(void)
-{
-    /*
-     * Do nothing
-     */
-}
-static void XMLCDECL LIBXML_ATTR_FORMAT(1,2)
-endTimer(char *format, ...)
-{
-    /*
-     * We cannot do anything because we don't have a timing function
-     */
-#ifdef HAVE_STDARG_H
-    va_list ap;
-    va_start(ap, format);
-    vfprintf(stderr, format, ap);
-    va_end(ap);
-    fprintf(stderr, " was not timed\n");
-#else
-    /* We don't have gettimeofday, time or stdarg.h, what crazy world is
-     * this ?!
-     */
-#endif
-}
 #endif
 /************************************************************************
  *                                                                     *
diff --git a/xmlmemory.c b/xmlmemory.c
index ff500380..efee14dd 100644
--- a/xmlmemory.c
+++ b/xmlmemory.c
@@ -8,27 +8,14 @@
 #include "libxml.h"
 
 #include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <time.h>
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
 
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#else
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-#endif
-
-#ifdef HAVE_CTYPE_H
-#include <ctype.h>
-#endif
-
 /* #define DEBUG_MEMORY */
 
 /**
@@ -963,9 +950,7 @@ xmlMemoryDump(void)
 int
 xmlInitMemory(void)
 {
-#ifdef HAVE_STDLIB_H
      char *breakpoint;
-#endif
 #ifdef DEBUG_MEMORY
      xmlGenericError(xmlGenericErrorContext,
             "xmlInitMemory()\n");
@@ -978,18 +963,14 @@ xmlInitMemory(void)
      xmlMemInitialized = 1;
      xmlMemMutex = xmlNewMutex();
 
-#ifdef HAVE_STDLIB_H
      breakpoint = getenv("XML_MEM_BREAKPOINT");
      if (breakpoint != NULL) {
          sscanf(breakpoint, "%ud", &xmlMemStopAtBlock);
      }
-#endif
-#ifdef HAVE_STDLIB_H
      breakpoint = getenv("XML_MEM_TRACE");
      if (breakpoint != NULL) {
          sscanf(breakpoint, "%p", &xmlMemTraceBlockAt);
      }
-#endif
 
 #ifdef DEBUG_MEMORY
      xmlGenericError(xmlGenericErrorContext,
diff --git a/xmlreader.c b/xmlreader.c
index be3f6610..45062a47 100644
--- a/xmlreader.c
+++ b/xmlreader.c
@@ -20,13 +20,8 @@
 #ifdef LIBXML_READER_ENABLED
 #include <string.h> /* for memset() only ! */
 #include <stdarg.h>
-
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 #include <libxml/xmlmemory.h>
 #include <libxml/xmlIO.h>
diff --git a/xmlregexp.c b/xmlregexp.c
index 784563af..f9aac42f 100644
--- a/xmlregexp.c
+++ b/xmlregexp.c
@@ -23,9 +23,8 @@
 
 #include <stdio.h>
 #include <string.h>
-#ifdef HAVE_LIMITS_H
 #include <limits.h>
-#endif
+
 #ifdef HAVE_STDINT_H
 #include <stdint.h>
 #endif
diff --git a/xmlschemastypes.c b/xmlschemastypes.c
index 64a3b3e0..419c1910 100644
--- a/xmlschemastypes.c
+++ b/xmlschemastypes.c
@@ -18,6 +18,9 @@
 #ifdef LIBXML_SCHEMAS_ENABLED
 
 #include <string.h>
+#include <math.h>
+#include <float.h>
+
 #include <libxml/xmlmemory.h>
 #include <libxml/parser.h>
 #include <libxml/parserInternals.h>
@@ -30,13 +33,6 @@
 #include <libxml/schemasInternals.h>
 #include <libxml/xmlschemastypes.h>
 
-#ifdef HAVE_MATH_H
-#include <math.h>
-#endif
-#ifdef HAVE_FLOAT_H
-#include <float.h>
-#endif
-
 #define DEBUG
 
 #ifndef LIBXML_XPATH_ENABLED
diff --git a/xpath.c b/xpath.c
index 11b452e5..23078957 100644
--- a/xpath.c
+++ b/xpath.c
@@ -25,21 +25,12 @@
 #include <limits.h>
 #include <string.h>
 #include <stddef.h>
-
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_MATH_H
 #include <math.h>
-#endif
-#ifdef HAVE_FLOAT_H
 #include <float.h>
-#endif
-#ifdef HAVE_CTYPE_H
 #include <ctype.h>
-#endif
-#ifdef HAVE_SIGNAL_H
-#include <signal.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
 #endif
 
 #include <libxml/xmlmemory.h>
diff --git a/xzlib.c b/xzlib.c
index 62cb2b0f..c13e17db 100644
--- a/xzlib.c
+++ b/xzlib.c
@@ -11,10 +11,8 @@
 #ifdef LIBXML_LZMA_ENABLED
 
 #include <string.h>
-#ifdef HAVE_ERRNO_H
+#include <stdlib.h>
 #include <errno.h>
-#endif
-
 
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
@@ -28,9 +26,6 @@
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
 #ifdef LIBXML_ZLIB_ENABLED
 #include <zlib.h>
 #endif
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