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Author Topic: wxWidgets problem: 'strlen' not declared in this scope  (Read 20723 times)
lllf
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« on: September 29, 2008, 02:33:17 pm »

Hi!

Since I've been running into problems compiling projects using wxWidgets I just took a simple helloWorld.cpp and #included wx/wx.h
Code:
#include <iostream>
#include "wx/wx.h"

using namespace std;

int main()
{
    cout << "Hello world!" << endl;
    return 0;
}

These are the first lines of the build messages:

C:\Programme\wxWidgets-2.8.9\include\wx\wxchar.h||In function `size_t wxStrlen(const wxChar*)':
C:\Programme\wxWidgets-2.8.9\include\wx\wxchar.h|845|error: `strlen' was not declared in this scope
C:\Programme\wxWidgets-2.8.9\include\wx\wxchar.h||In function `char* wxTmemchr(const void*, int, size_t)':
C:\Programme\wxWidgets-2.8.9\include\wx\wxchar.h|1371|error: `memchr' was not declared in this scope
C:\Programme\wxWidgets-2.8.9\include\wx\wxchar.h||In function `int wxTmemcmp(const void*, const void*, size_t)':


Maybe I screwed up sth. because the first time I tried everything worked just fine.

The global wx variable is set to the appropriate path. I copied the setup.h to the <WXWIN>/include/wx (although I am not sure if this is the proper way to get it into the include path...)

Any ideas on this?

Setup:
C::B nightly Aug-23-2008 (5193),
wxWidgets 2.8.9,
MinGW3.4.5
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C::B NB 2008-09-21 (5203)
MinGW 3.4.5
WinXP
jens
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« Reply #1 on: September 29, 2008, 02:55:08 pm »

Copying "setup.h" is not the right way, it contains setup definitions, that depend on the options you have used while compiling wxWidgets.
I sometimes read this "tip" on the forum and I think it is potential dangerous, even if it seems to work in the most cases.

If your project is setup correctly you don't need to copy anything.

Read http://wiki.codeblocks.org/index.php?title=WxWindowsQuickRef how to build wxWidgets and prepare C::B for the use of it, or look at the options of a wizard-created project.
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Regards

Jens  Debian - nightlies (and release) : http://apt.jenslody.de/ Fedora [18 - 20]- and CentOS/RedHat [5 & 6] - nightlies : http://rpm.jenslody.de/
lllf
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« Reply #2 on: September 29, 2008, 06:41:39 pm »

Hm, ok, I removed setup.h from .../wx/include now and included the path I initially copied it from in the (global) compiler options.

But this wasn't what caused the errors, they remain the same, even if I comment out the #include of wx/wx.h now, even if I remove anything related to wxWidgets from the project and clean it. I'll have a look at a wizard generated project now, like proposed...

...

Well, firstly setup.h is not found, I add the absolute path to the project's settings (it was there already but through the relative definition of the global wx variable which for some reason didn't work), then there arise new errors, e.g.

C:\Programme\wxWidgets-2.8.9\include\wx\buffer.h|127|error: `strdup' was not declared in this scope

which reminds me a lot of the errors I got previously.

Damn.  :?

Well, so I will recompile wxWidgets now, let's see...
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C::B NB 2008-09-21 (5203)
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lllf
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« Reply #3 on: September 30, 2008, 08:47:39 am »

didn't work...  Sad
but I have to admit that I did not really recompile it, i.e. I didn't clean before I did (I'll do this tomorrow)... actually I don't think that a wxWidgets rebuild will solve the problem since the errors all refer to the header files which should be the same with or without a compiled library, shouldn't they?
I'll keep trying and will inform you when I find out what is the problem or when I find a solution (but I'd prefer to know what I am doing wrong).

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C::B NB 2008-09-21 (5203)
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WinXP
jens
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« Reply #4 on: September 30, 2008, 09:56:14 am »

Looks more like a problem with your MinGW setup for me, because strlen is a standard c++-function.
Make sure your search-paths are set correctly.

As far as I know, "strlen" and "strdup" are declared in "string.h", which is in MinGW's include folder (e.g. "c:\MinGW\include").
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Regards

Jens  Debian - nightlies (and release) : http://apt.jenslody.de/ Fedora [18 - 20]- and CentOS/RedHat [5 & 6] - nightlies : http://rpm.jenslody.de/
lllf
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« Reply #5 on: September 30, 2008, 07:32:08 pm »

You were right. Together with the wxWidgets search paths I also deleted the mingw/include from the search directories.

It had to be that simple...  Smiley 

Thank you.
Cheesy Cheesy Cheesy

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C::B NB 2008-09-21 (5203)
MinGW 3.4.5
WinXP
harkin
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« Reply #6 on: February 08, 2009, 06:32:47 pm »

Hi all. Been having a similar problem to IIIf (or is it lllf?). Anyway...

I kept getting the error about strup

C:\Programme\wxWidgets-2.8.9\include\wx\buffer.h|127|error: `strdup' was not declared in this scope

I'd included the DirectX sdk include path in my search path, and after pushing it to the bottom of the list and pulling the Mingw include path to the top my basic wx.cpp compiles fine.

P.S. I used this post to compile wxWidgets properly

http://wiki.codeblocks.org/index.php?title=Compiling_wxWidgets_2.8.6_to_develop_Code::Blocks_(MSW)

Thanks guys and gals

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psyhotron
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« Reply #7 on: October 18, 2010, 07:56:28 pm »

Hi I have similiar problem and it doesn't matter if I will compile wxWidgets from the source code or use wxPack I'm always ending up with the same result wchich is:

C:\wxWidgets-2.8.11\include\wx\chkconf.h|1824|warning: "wxUSE_WX_RESOURCES" is not defined|
C:\wxWidgets-2.8.11\include\wx\defs.h|978|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\defs.h|979|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\buffer.h||In constructor 'wxCharBuffer::wxCharBuffer(const char*)':|
C:\wxWidgets-2.8.11\include\wx\buffer.h|128|error: 'strdup' was not declared in this scope|

C:\wxWidgets-2.8.11\include\wx\buffer.h||In member function 'wxCharBuffer& wxCharBuffer::operator=(const char*)':|
C:\wxWidgets-2.8.11\include\wx\buffer.h|128|error: 'strdup' was not declared in this scope|
C:\wxWidgets-2.8.11\include\wx\buffer.h||In constructor 'wxWCharBuffer::wxWCharBuffer(const wchar_t*)':|
C:\wxWidgets-2.8.11\include\wx\buffer.h|135|error: '_wcsdup' was not declared in this scope|
C:\wxWidgets-2.8.11\include\wx\buffer.h||In member function 'wxWCharBuffer& wxWCharBuffer::operator=(const wchar_t*)':|
C:\wxWidgets-2.8.11\include\wx\buffer.h|135|error: '_wcsdup' was not declared in this scope|
C:\wxWidgets-2.8.11\include\wx\string.h||In function 'int Stricmp(const char*, const char*)':|
C:\wxWidgets-2.8.11\include\wx\string.h|141|error: 'strcasecmp' was not declared in this scope|
C:\wxWidgets-2.8.11\include\wx\string.h|1073|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\string.h|1079|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\string.h|1191|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\string.h|1193|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\list.h||In constructor 'wxListKey::wxListKey(const wxChar*)':|
C:\wxWidgets-2.8.11\include\wx\list.h|406|error: 'strdup' was not declared in this scope|

C:\wxWidgets-2.8.11\include\wx\list.h||In constructor 'wxListKey::wxListKey(const wxString&)':|
C:\wxWidgets-2.8.11\include\wx\list.h|408|error: 'strdup' was not declared in this scope|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|536|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|536|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|537|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|537|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h||In member function 'long long unsigned int wxIntegerHash::operator()(long long int) const':|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|536|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|556|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|556|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|557|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\hashmap.h|557|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\math.h||In function 'bool wxIsSameDouble(double, double)':|
C:\wxWidgets-2.8.11\include\wx\math.h|102|warning: comparing floating point with == or != is unsafe|
C:\wxWidgets-2.8.11\include\wx\longlong.h|114|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|133|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|135|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|174|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|199|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|201|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|223|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|225|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|340|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h||In constructor 'wxLongLongNative::wxLongLongNative(wxInt32, wxUint32)':|
C:\wxWidgets-2.8.11\include\wx\longlong.h|119|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|120|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h||In member function 'wxLongLongNative& wxLongLongNative::Assign(double)':|
C:\wxWidgets-2.8.11\include\wx\longlong.h|157|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|351|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|371|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|373|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|402|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|427|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|429|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|446|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|448|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|563|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h||In constructor 'wxULongLongNative::wxULongLongNative(wxUint32, wxUint32)':|
C:\wxWidgets-2.8.11\include\wx\longlong.h|356|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|357|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|1070|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|1071|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|1073|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\longlong.h|1074|warning: ISO C++ 1998 does not support 'long long'|
C:\wxWidgets-2.8.11\include\wx\filefn.h|198|warning: ISO C++ 1998 does not support 'long long'|
||=== Build finished: 7 errors, 45 warnings ===|


I'm trying to solve this problem for about 3 days now ... and I'm loosing my mind here ... so anyone please help me  :?
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SteelRat
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« Reply #8 on: October 19, 2010, 12:03:46 pm »

...
Are you sure that "X:\MinGW\include" directory is in your "Search directories"?
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psyhotron
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« Reply #9 on: October 19, 2010, 02:25:06 pm »

I'm using Win 7 64bit and it looks like my wxWidgets compilation fails ... in fact I have tried to compile the source many times using diffrent versions of wxWidgets and also to redirect the output of compilation into a file rather than console but if fails more or less with the same error message


gcc_mswudll\monodll_debugrpt.o: file not recognized: Memory exhausted
collect2: ld returned 1 exit status
mingw32-make: *** [..\..\lib\gcc_dll\wxmsw291u_gcc_custom.dll] Error 1


I did attached full warrning/error log for comparision.

my global variable base is C:\wx were C:\wx is main folder with my source code ...

project build options->search directories:
C:\MinGW\include
$(#wx)\include
$(#wx)\lib\gcc_dll\mswu

Target is set for Release

project build options->release->search directories:
$(#wx)\lib\gcc_dll\mswu

I'm trying to compile the source code using following commands

cd C:\wx\build\msw\

mingw32-make -f makefile.gcc MONOLITHIC=1 SHARED=1 UNICODE=1 BUILD=release clean

mingw32-make -f makefile.gcc MONOLITHIC=1 SHARED=1 UNICODE=1 BUILD=release > install_log.txt

System Path is set to C:\MinGW\bin    :?
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kencamargo
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« Reply #10 on: October 19, 2010, 02:51:18 pm »

I'm using Win 7 64bit and it looks like my wxWidgets compilation fails ...

You are using the 32 bit mingw under a 64 bit OS, maybe there is a mix-up with some of the libraries? Your message log indicates a linker error...

Ken
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psyhotron
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« Reply #11 on: October 19, 2010, 03:18:14 pm »

is there 64bit version of mingw ?
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SteelRat
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« Reply #12 on: October 19, 2010, 03:23:57 pm »

I'm using Win 7 64 bit too. And using 32 bit compiler. So the reason not it. But i've build wxWidgets as static library.
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psyhotron
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« Reply #13 on: October 19, 2010, 03:52:38 pm »

I'm using Win 7 64 bit too. And using 32 bit compiler. So the reason not it. But i've build wxWidgets as static library.

StelRat did you had similiar problems with compilation before you tried to compile as static library ?

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SteelRat
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« Reply #14 on: October 19, 2010, 04:31:18 pm »

No. I had never used DLL. I hate them. =) For threading i need one, but that is other story.
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