Xcode not working with tidylib

[eduhh94]

Dear Devolper Team,

I tried to get this example working:

#include <tidy.h>
#include <tidybuffio.h>
#include <stdio.h>
#include <errno.h>


int main(int argc, char **argv )
{
    const char* input = "<title>Foo</title><p>Foo!";
    TidyBuffer output = {0};
    TidyBuffer errbuf = {0};
    int rc = -1;
    Bool ok;
    
    TidyDoc tdoc = tidyCreate();                     // Initialize "document"
    printf( "Tidying:\t%s\n", input );
    
    ok = tidyOptSetBool( tdoc, TidyXhtmlOut, yes );  // Convert to XHTML
    if ( ok )
        rc = tidySetErrorBuffer( tdoc, &errbuf );      // Capture diagnostics
    if ( rc >= 0 )
        rc = tidyParseString( tdoc, input );           // Parse the input
    if ( rc >= 0 )
        rc = tidyCleanAndRepair( tdoc );               // Tidy it up!
    if ( rc >= 0 )
        rc = tidyRunDiagnostics( tdoc );               // Kvetch
    if ( rc > 1 )                                    // If error, force output.
        rc = ( tidyOptSetBool(tdoc, TidyForceOutput, yes) ? rc : -1 );
    if ( rc >= 0 )
        rc = tidySaveBuffer( tdoc, &output );          // Pretty Print
    
    if ( rc >= 0 )
    {
        if ( rc > 0 )
            printf( "\nDiagnostics:\n\n%s", errbuf.bp );
        printf( "\nAnd here is the result:\n\n%s", output.bp );
    }
    else
        printf( "A severe error (%d) occurred.\n", rc );
    
    tidyBufFree( &output );
    tidyBufFree( &errbuf );
    tidyRelease( tdoc );
    return rc;
}

My problem is that I get the following error all the time and I just can't fix it:

Undefined symbols for architecture x86_64:
"_tidyBufFree", referenced from:
_main in main.o
"_tidyCleanAndRepair", referenced from:
_main in main.o
"_tidyCreate", referenced from:
_main in main.o
"_tidyOptSetBool", referenced from:
_main in main.o
"_tidyParseString", referenced from:
_main in main.o
"_tidyRelease", referenced from:
_main in main.o
"_tidyRunDiagnostics", referenced from:
_main in main.o
"_tidySaveBuffer", referenced from:
_main in main.o
"_tidySetErrorBuffer", referenced from:
_main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

What I did?

• I set up the header search path to "/usr/local/Cellar/tidy-html5/5.6.0/include/"
• I set up the library search path to "/usr/local/Cellar/tidy-html5/5.6.0/lib/"
• I also tried to set other link flags to "-ltidylib"

System?

• MacOS High Sierra 10.13.4
• XCode 9.4.1

Solution
Instead of using "-ltidylib" you have to use "-ltidy"

[balthisar]

I use this template for working with Tidy. I see that you're trying to link to a homebrew installed Tidy, but the linked Xcode project will statically link. Given Tidy's small size, I think it's worth it to keep up with the latest source.

In any case, is there a request to the devs here?

[eduhh94]

Hi balthisar,

like I already mentioned the problem was a wrong linker flag.
If you install tidy over homebrew you have to do the following to be able to use tidy-html:

First you go to your xcode project and go to "Build Settings" there you add following settings:

• Header Search Paths: "/usr/local/Cellar/tidy-html5/5.6.0/include"
• Library Search Paths: "/usr/local/Cellar/tidy-html5/5.6.0/lib"
• Other Linker Flags: "-ltidy"

The request would be to add this instruction to the set up section for mac installation.

[balthisar]

The wrong linker flag is where, though? Tidy builds using CMake, and it builds just fine on macOS, using the standard install locations. The Xcode project I provided builds just fine, too. Homebrew seems to be the outlier here.

I'm happy to help, but where, specifically in the setup section would you want this? Since it seems like you're only talking about documentation, a PR would be welcome, so that I understand you completely.

[traviskirton]

I'm running into the same issue, and @balthisar's question from Aug 29, 2018 is still valid.
I have a version of tidy installed via cmake (v 5.9.20) and when I run tidy -v from a script being run from Xcode, the version returned is:
HTML Tidy for Mac OS X released on 31 October 2006 - Apple Inc. build 8765