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#1: Compiling httpd"s open.c under Windows VS2008 IDE

Posted on 2010-10-07 17:04:49 by Jim Cofer

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I downloaded and extracted Apache httpd 2.2.16, opened Apache.sln under
Windows for VS2008, selected "Release - Win32" and right clicked
"httpd", Rebuild. I keep hitting the following error under the libapr
build:



..\file_io\win32\open.c(608) : error C2065: 'wto_path' : undeclared
identifier

..\file_io\win32\open.c(608) : warning C4047: 'function' : 'LPCSTR'
differs in levels of indirection from 'int'

..\file_io\win32\open.c(608) : warning C4024: 'CreateHardLinkA' :
different types for formal and actual parameter 1



The code snippet is this:



#if APR_HAS_UNICODE_FS

IF_WIN_OS_IS_UNICODE

{

apr_wchar_t wfrom_path[APR_PATH_MAX];

apr_wchar_t wto_path[APR_PATH_MAX];



if (rv = utf8_to_unicode_path(wfrom_path, sizeof(wfrom_path)

/ sizeof(apr_wchar_t),
from_path))

return rv;

if (rv = utf8_to_unicode_path(wto_path, sizeof(wto_path)

/ sizeof(apr_wchar_t),
to_path))

return rv;



if (!CreateHardLinkW(wto_path, wfrom_path, NULL))

return apr_get_os_error();

}

#endif

#if APR_HAS_ANSI_FS

ELSE_WIN_OS_IS_ANSI {

if (!CreateHardLinkA(wto_path, wfrom_path))

return apr_get_os_error()

}

#endif



"wto_path" is locally scoped in the "if" part of the statement, but it
is not defined in the "else". Additionally, CreateHardLinkA need 3
parameters.



I "searched" both the Wiki and FAQs, but did not find any other
references to this error. Has anyone else hit it and found a
resolution? I am using Microsoft VS2008 under a Windows 7 x32 system.



My apologies if this has already been addressed somewhere else. Any
links would be appreciated.



Regards, Jim

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<div class=3DWordSection1>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>I downloaded and extracted Apache httpd 2.2.16, =
opened Apache.sln
under Windows for VS2008, selected &#8220;Release &#8211; Win32&#8221; =
and right
clicked &nbsp;&#8220;httpd&#8221;, Rebuild.&nbsp; &nbsp;&nbsp;I keep =
hitting
the following error under the libapr build: <o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>.\file_io\win32\open.c(608) : error C2065: =
'wto_path' :
undeclared identifier<o:p></o:p></p>

<p class=3DMsoNormal>.\file_io\win32\open.c(608) : warning C4047: =
'function' :
'LPCSTR' differs in levels of indirection from 'int'<o:p></o:p></p>

<p class=3DMsoNormal>.\file_io\win32\open.c(608) : warning C4024:
'CreateHardLinkA' : different types for formal and actual parameter =
1<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>The code snippet is this:<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>#if
APR_HAS_UNICODE_FS<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;
IF_WIN_OS_IS_UNICODE<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;
{<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apr_wchar_t wfrom_path[APR_PATH_MAX];<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
apr_wchar_t wto_path[APR_PATH_MAX];<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (rv =3D utf8_to_unicode_path(wfrom_path, sizeof(wfrom_path) =
<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;
/ sizeof(apr_wchar_t), from_path))<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;
return rv;<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (rv =3D utf8_to_unicode_path(wto_path, sizeof(wto_path) =
<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;
/ sizeof(apr_wchar_t), to_path))<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;
return rv;<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'><o:p>&nbsp;</o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!CreateHardLinkW(wto_path, wfrom_path, NULL))<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return apr_get_os_error();<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;
}<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>#endif<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>#if
APR_HAS_ANSI_FS<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;
ELSE_WIN_OS_IS_ANSI {<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
if (!CreateHardLinkA(wto_path, wfrom_path))<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return apr_get_os_error()<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>&nbsp;&nbsp;&nbsp;
}<o:p></o:p></span></p>

<p class=3DMsoNormal style=3D'margin-left:1.0in'><span =
style=3D'font-size:10.0pt'>#endif<o:p></o:p></span></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>&#8220;wto_path&#8221; is locally scoped in the =
&#8220;if&#8221;
part of the statement, but it is not defined in the =
&#8220;else&#8221;.&nbsp;&nbsp;&nbsp;
Additionally, CreateHardLinkA need 3 parameters.<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>I &#8220;searched&#8221; both the Wiki and FAQs, =
but did not
find any other references to this error.&nbsp; Has anyone else hit it =
and found
a resolution?&nbsp; &nbsp;&nbsp;I am using Microsoft VS2008 under a =
Windows 7
x32 system.<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>My apologies if this has already been addressed =
somewhere
else.&nbsp; Any links would be appreciated.<o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal>Regards,&nbsp; Jim<o:p></o:p></p>

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