Hello Daniel Veillard,
I've just compiled libxml2-2.9.5 with GCC 7.2.0 and this script
<https://github.com/Reino17/ffmpeg-windows-build-helpers> to build
FFmpeg in the end.
It compiled without errors, but I did get A LOT of warnings!
I thought I'd subscribe to this mailing list to share it with you.
With kind regards,
Reino
making
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5
as $
PATH=/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/bin:$PATH
make -j 1
make all-recursive
make[1]: Entering directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5'
Making all in include
make[2]: Entering directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include'
Making all in libxml
make[3]: Entering directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include/libxml'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include/libxml'
make[3]: Entering directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include'
make[2]: Leaving directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5/include'
Making all in .
make[2]: Entering directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5'
CC SAX.lo
CC entities.lo
CC encoding.lo
CC error.lo
CC parserInternals.lo
CC parser.lo
CC tree.lo
tree.c: In function 'xmlDOMWrapRemoveNode':
tree.c:8252:6: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if ((ctxt == NULL) && (node->nsDef != NULL)) {
^
tree.c:8262:6: note: here
case XML_ATTRIBUTE_NODE:
^~~~
tree.c: In function 'xmlDOMWrapReconcileNamespaces':
tree.c:8850:6: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (! adoptns)
^
tree.c:8853:6: note: here
case XML_ATTRIBUTE_NODE:
^~~~
tree.c: In function 'xmlDOMWrapAdoptBranch':
tree.c:9092:6: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if ((cur->nsDef) &&
^
tree.c:9134:6: note: here
case XML_ATTRIBUTE_NODE:
^~~~
CC hash.lo
CC list.lo
CC xmlIO.lo
xmlIO.c:63:0: warning: "stat" redefined
# define stat _stat
In file included from xmlIO.c:24:0:
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/sys/stat.h:265:0:
note: this is the location of the previous definition
#define stat _stat32i64
xmlIO.c: In function 'xmlCheckHTTPInput':
xmlIO.c:3877:36: warning: unused parameter 'ctxt' [-Wunused-parameter]
xmlCheckHTTPInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr ret) {
^~~~
CC xmlmemory.lo
CC uri.lo
uri.c: In function 'xmlCanonicPath':
uri.c:2480:14: warning: pointer targets in assignment differ in signedness
[-Wpointer-sign]
uri->scheme = xmlStrdup(BAD_CAST "file");
^
uri.c:2489:4: warning: pointer targets in assignment differ in signedness
[-Wpointer-sign]
p = uri->path + 1;
^
uri.c:2490:10: warning: pointer targets in passing argument 1 of 'strncpy'
differ in signedness [-Wpointer-sign]
strncpy(p, path, len + 1);
^
In file included from uri.c:14:0:
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/string.h:89:9:
note: expected 'char * restrict' but argument is of type 'xmlChar * {aka
unsigned char *}'
char *strncpy(char * __restrict__ _Dest,const char * __restrict__
_Source,size_t _Count) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
^~~~~~~
uri.c:2490:13: warning: pointer targets in passing argument 2 of 'strncpy'
differ in signedness [-Wpointer-sign]
strncpy(p, path, len + 1);
^~~~
In file included from uri.c:14:0:
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/string.h:89:9:
note: expected 'const char * restrict' but argument is of type 'const xmlChar
* {aka const unsigned char *}'
char *strncpy(char * __restrict__ _Dest,const char * __restrict__
_Source,size_t _Count) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
^~~~~~~
uri.c:2492:12: warning: pointer targets in assignment differ in signedness
[-Wpointer-sign]
uri->path = xmlStrdup(path);
^
uri.c:2497:4: warning: pointer targets in assignment differ in signedness
[-Wpointer-sign]
p = uri->path;
^
uri.c:2397:9: warning: unused variable 'i' [-Wunused-variable]
int i = 0;
^
CC valid.lo
valid.c: In function 'xmlSnprintfElements':
valid.c:5191:6: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (xmlIsBlankNode(cur))
^
valid.c:5193:13: note: here
case XML_CDATA_SECTION_NODE:
^~~~
CC xlink.lo
CC HTMLparser.lo
CC HTMLtree.lo
CC debugXML.lo
CC xpath.lo
In file included from ./include/libxml/parser.h:18:0,
from ./include/libxml/globals.h:18,
from ./include/libxml/threads.h:35,
from ./include/libxml/xmlmemory.h:218,
from xpath.c:44:
xpath.c: In function 'xmlXPathRegisterFuncNS':
xpath.c:4889:73: warning: ISO C forbids passing argument 4 of
'xmlHashAddEntry2' between function pointer and 'void *' [-Wpedantic]
return(xmlHashAddEntry2(ctxt->funcHash, name, ns_uri, XML_CAST_FPTR(f)));
^
./include/libxml/hash.h:56:29: note: in definition of macro 'XML_CAST_FPTR'
#define XML_CAST_FPTR(fptr) fptr
^~~~
./include/libxml/hash.h:128:4: note: expected 'void *' but argument is of type
'xmlXPathFunction {aka void (*)(struct _xmlXPathParserContext *, int)}'
xmlHashAddEntry2(xmlHashTablePtr table,
^~~~~~~~~~~~~~~~
xpath.c: In function 'xmlXPathFunctionLookupNS':
xpath.c:4970:24: warning: ISO C forbids assignment between function pointer and
'void *' [-Wpedantic]
XML_CAST_FPTR(ret) = xmlHashLookup2(ctxt->funcHash, name, ns_uri);
^
xpath.c: In function 'xmlXPathEqualValuesCommon':
xpath.c:7040:12: warning: this statement may fall through
[-Wimplicit-fallthrough=]
arg2 = valuePop(ctxt);
~~~~~^~~~~~~~~~~~~~~~
xpath.c:7042:3: note: here
case XPATH_NUMBER:
^~~~
In file included from xpath.c:482:0:
At top level:
trionan.c:218:1: warning: 'trio_is_negative' defined but not used
[-Wunused-function]
trio_is_negative
^~~~~~~~~~~~~~~~
trionan.c:194:1: warning: 'trio_is_special_quantity' defined but not used
[-Wunused-function]
trio_is_special_quantity
^~~~~~~~~~~~~~~~~~~~~~~~
CC xpointer.lo
CC xinclude.lo
CC nanohttp.lo
CC nanoftp.lo
CC catalog.lo
catalog.c: In function 'xmlParseSGMLCatalog':
catalog.c:2397:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (*cur == '%')
^
catalog.c:2399:3: note: here
case SGML_CATA_PENTITY:
^~~~
CC globals.lo
CC threads.lo
threads.c: In function 'xmlOnceInit':
threads.c:942:34: warning: pointer targets in passing argument 1 of
'InterlockedIncrement' differ in signedness [-Wpointer-sign]
if (InterlockedIncrement(&run_once.control) == 1) {
^
In file included from
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/winbase.h:22:0,
from
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/windows.h:70,
from threads.c:30:
/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/interlockedapi.h:29:37:
note: expected 'volatile LONG * {aka volatile long int *}' but argument is of
type 'DWORD * {aka long unsigned int *}'
__MINGW_INTRIN_INLINE LONG WINAPI InterlockedIncrement(LONG volatile
*lpAddend) {
^~~~~~~~~~~~~~~~~~~~
CC c14n.lo
CC xmlstring.lo
CC buf.lo
CC xmlregexp.lo
xmlregexp.c: In function 'xmlRegCheckCharacterRange':
xmlregexp.c:2812:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
neg = !neg;
~~~~^~~~~~
xmlregexp.c:2813:9: note: here
case XML_REGEXP_ANYSPACE:
^~~~
xmlregexp.c:2818:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
neg = !neg;
~~~~^~~~~~
xmlregexp.c:2819:9: note: here
case XML_REGEXP_INITNAME:
^~~~
xmlregexp.c:2824:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
neg = !neg;
~~~~^~~~~~
xmlregexp.c:2825:9: note: here
case XML_REGEXP_NAMECHAR:
^~~~
xmlregexp.c:2832:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
neg = !neg;
~~~~^~~~~~
xmlregexp.c:2833:9: note: here
case XML_REGEXP_DECIMAL:
^~~~
xmlregexp.c:2837:10: warning: this statement may fall through
[-Wimplicit-fallthrough=]
neg = !neg;
~~~~^~~~~~
xmlregexp.c:2838:9: note: here
case XML_REGEXP_NOTREALCHAR:
^~~~
CC xmlschemas.lo
xmlschemas.c: In function 'xmlSchemaFormatItemForReport':
xmlschemas.c:327:31: warning: this statement may fall through
[-Wimplicit-fallthrough=]
#define FREE_AND_NULL(str) if ((str) != NULL) { xmlFree((xmlChar *) (str));
str = NULL; }
^
xmlschemas.c:1743:3: note: in expansion of macro 'FREE_AND_NULL'
FREE_AND_NULL(str);
^~~~~~~~~~~~~
xmlschemas.c:1745:2: note: here
default:
^~~~~~~
CC xmlschemastypes.lo
xmlschemastypes.c: In function 'xmlSchemaValidateFacetInternal':
xmlschemastypes.c:5403:9: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if ((valType == XML_SCHEMAS_QNAME) ||
^
xmlschemastypes.c:5407:2: note: here
case XML_SCHEMA_FACET_MAXLENGTH:
^~~~
CC xmlunicode.lo
CC xmlreader.lo
CC relaxng.lo
relaxng.c: In function 'xmlRelaxNGValidateValue':
relaxng.c:8890:16: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (ret != 0) {
^
relaxng.c:8894:9: note: here
case XML_RELAXNG_ZEROORMORE:{
^~~~
relaxng.c: In function 'xmlRelaxNGValidateState':
relaxng.c:10168:16: warning: this statement may fall through
[-Wimplicit-fallthrough=]
if (ctxt->errNr > errNr)
^
relaxng.c:10171:9: note: here
case XML_RELAXNG_ZEROORMORE:{
^~~~
CC dict.lo
dict.c: In function 'xmlDictAddString':
dict.c:252:29: warning: comparison between signed and unsigned integer
expressions [-Wsign-compare]
if (pool->end - pool->free > namelen)
^
dict.c: In function 'xmlDictAddQString':
dict.c:320:29: warning: comparison between signed and unsigned integer
expressions [-Wsign-compare]
if (pool->end - pool->free > namelen + plen + 1)
^
dict.c: In function 'xmlDictComputeFastKey':
dict.c:455:24: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 10: value += name[9];
~~~~~~^~~~~~~~~~
dict.c:456:9: note: here
case 9: value += name[8];
^~~~
dict.c:456:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 9: value += name[8];
~~~~~~^~~~~~~~~~
dict.c:457:9: note: here
case 8: value += name[7];
^~~~
dict.c:457:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 8: value += name[7];
~~~~~~^~~~~~~~~~
dict.c:458:9: note: here
case 7: value += name[6];
^~~~
dict.c:458:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 7: value += name[6];
~~~~~~^~~~~~~~~~
dict.c:459:9: note: here
case 6: value += name[5];
^~~~
dict.c:459:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 6: value += name[5];
~~~~~~^~~~~~~~~~
dict.c:460:9: note: here
case 5: value += name[4];
^~~~
dict.c:460:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 5: value += name[4];
~~~~~~^~~~~~~~~~
dict.c:461:9: note: here
case 4: value += name[3];
^~~~
dict.c:461:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 4: value += name[3];
~~~~~~^~~~~~~~~~
dict.c:462:9: note: here
case 3: value += name[2];
^~~~
dict.c:462:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 3: value += name[2];
~~~~~~^~~~~~~~~~
dict.c:463:9: note: here
case 2: value += name[1];
^~~~
dict.c: In function 'xmlDictComputeFastQKey':
dict.c:498:24: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 10: value += prefix[9];
~~~~~~^~~~~~~~~~~~
dict.c:499:9: note: here
case 9: value += prefix[8];
^~~~
dict.c:499:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 9: value += prefix[8];
~~~~~~^~~~~~~~~~~~
dict.c:500:9: note: here
case 8: value += prefix[7];
^~~~
dict.c:500:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 8: value += prefix[7];
~~~~~~^~~~~~~~~~~~
dict.c:501:9: note: here
case 7: value += prefix[6];
^~~~
dict.c:501:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 7: value += prefix[6];
~~~~~~^~~~~~~~~~~~
dict.c:502:9: note: here
case 6: value += prefix[5];
^~~~
dict.c:502:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 6: value += prefix[5];
~~~~~~^~~~~~~~~~~~
dict.c:503:9: note: here
case 5: value += prefix[4];
^~~~
dict.c:503:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 5: value += prefix[4];
~~~~~~^~~~~~~~~~~~
dict.c:504:9: note: here
case 4: value += prefix[3];
^~~~
dict.c:504:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 4: value += prefix[3];
~~~~~~^~~~~~~~~~~~
dict.c:505:9: note: here
case 3: value += prefix[2];
^~~~
dict.c:505:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 3: value += prefix[2];
~~~~~~^~~~~~~~~~~~
dict.c:506:9: note: here
case 2: value += prefix[1];
^~~~
dict.c:506:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 2: value += prefix[1];
~~~~~~^~~~~~~~~~~~
dict.c:507:9: note: here
case 1: value += prefix[0];
^~~~
dict.c:516:24: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 10: value += name[9];
~~~~~~^~~~~~~~~~
dict.c:517:9: note: here
case 9: value += name[8];
^~~~
dict.c:517:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 9: value += name[8];
~~~~~~^~~~~~~~~~
dict.c:518:9: note: here
case 8: value += name[7];
^~~~
dict.c:518:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 8: value += name[7];
~~~~~~^~~~~~~~~~
dict.c:519:9: note: here
case 7: value += name[6];
^~~~
dict.c:519:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 7: value += name[6];
~~~~~~^~~~~~~~~~
dict.c:520:9: note: here
case 6: value += name[5];
^~~~
dict.c:520:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 6: value += name[5];
~~~~~~^~~~~~~~~~
dict.c:521:9: note: here
case 5: value += name[4];
^~~~
dict.c:521:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 5: value += name[4];
~~~~~~^~~~~~~~~~
dict.c:522:9: note: here
case 4: value += name[3];
^~~~
dict.c:522:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 4: value += name[3];
~~~~~~^~~~~~~~~~
dict.c:523:9: note: here
case 3: value += name[2];
^~~~
dict.c:523:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 3: value += name[2];
~~~~~~^~~~~~~~~~
dict.c:524:9: note: here
case 2: value += name[1];
^~~~
dict.c:524:23: warning: this statement may fall through
[-Wimplicit-fallthrough=]
case 2: value += name[1];
~~~~~~^~~~~~~~~~
dict.c:525:9: note: here
case 1: value += name[0];
^~~~
CC SAX2.lo
CC xmlwriter.lo
xmlwriter.c: In function 'xmlTextWriterEndDTDEntity':
xmlwriter.c:3756:17: warning: this statement may fall through
[-Wimplicit-fallthrough=]
sum += count;
~~~~^~~~~~~~
xmlwriter.c:3757:9: note: here
case XML_TEXTWRITER_DTD_ENTY:
^~~~
CC legacy.lo
CC chvalid.lo
CC pattern.lo
CC xmlsave.lo
CC xmlmodule.lo
xmlmodule.c: In function 'xmlModulePlatformSymbol':
xmlmodule.c:348:13: warning: ISO C forbids assignment between function pointer
and 'void *' [-Wpedantic]
*symbol = GetProcAddress(handle, name);
^
CC schematron.lo
CC xzlib.lo
CCLD libxml2.la
CC testdso.lo
CCLD testdso.la
sed -e
's?\@XML_LIBDIR\@?-L/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/lib?g'
\
-e
's?\@XML_INCLUDEDIR\@?-I/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/include/libxml2?g'
\
-e 's?\@VERSION\@?2.9.5?g' \
-e 's?\@XML_LIBS\@?-lxml2
-L/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/lib
-lz
-L/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/cross_compilers/mingw-w64-i686/i686-w64-mingw32/lib
-llzma -liconv ?g' \
< ./xml2Conf.sh.in > xml2Conf.tmp \
&& mv xml2Conf.tmp xml2Conf.sh
make[2]: Leaving directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5'
make[1]: Leaving directory
'/cygdrive/m/ffmpeg-windows-build-helpers-master/native_build/windows/ffmpeg_local_builds/sandbox/win32/libxml2-2.9.5'_______________________________________________
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