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STR #2205
| Application: | FLTK Library |
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| Status: | 1 - Closed w/Resolution |
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| Priority: | 3 - Moderate, e.g. unable to compile the software |
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| Scope: | 3 - Applies to all machines and operating systems |
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| Subsystem: | Core Library |
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| Summary: | filename_list.cxx:66: error: invalid conversion from 'int (*)(const void*, const void*)' to 'int (*)(const dirent64**, const dirent64**)' |
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| Version: | 2.0-current |
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| Created By: | mnowak |
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| Assigned To: | AlbrechtS |
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| Fix Version: | 2.0-current (SVN: v6834) |
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| Update Notification: | |
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Trouble Report Files:
Trouble Report Comments:
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| #1 | mnowak
14:07 Jun 16, 2009 |
| OS: : Fedora 11
Version: 2.0.x-6786
GCC: g++ (GCC) 4.4.0 20090506 (Red Hat 4.4.0-4)
gcc-4.4.0-4.i586
[...]
Compiling FileInput.cxx...
Compiling filename_absolute.cxx...
Compiling filename_ext.cxx...
Compiling filename_isdir.cxx...
Compiling filename_list.cxx...
filename_list.cxx: In function 'int fltk::filename_list(const char*, dirent64***, int (*)(const dirent64* const*, const dirent64* const*))':
filename_list.cxx:66: error: invalid conversion from 'int (*)(const void*, const void*)' to 'int (*)(const dirent64**, const dirent64**)'
filename_list.cxx:66: error: initializing argument 4 of 'int scandir64(const char*, dirent64***, int (*)(const dirent64*), int (*)(const dirent64**, const dirent64**))'
make[1]: *** [filename_list.o] Error 1
make: *** [all] Error 2
I guess it worked with gcc-4.3.2 from Fedora 10. | |
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| #2 | mnowak
14:26 Jun 16, 2009 |
| (More verbose output)
gcc -I.. -I../fltk/compat -O2 -Wall -Wunused -fPIC -I/usr/include/freetype2 -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i586 -mtune=generic -fasynchronous-unwind-tables -Wno-non-virtual-dtor -c filename_list.cxx
filename_list.cxx: In function 'int fltk::filename_list(const char*, dirent64***, int (*)(const dirent64* const*, const dirent64* const*))':
filename_list.cxx:66: error: invalid conversion from 'int (*)(const void*, const void*)' to 'int (*)(const dirent64**, const dirent64**)'
filename_list.cxx:66: error: initializing argument 4 of 'int scandir64(const char*, dirent64***, int (*)(const dirent64*), int (*)(const dirent64**, const dirent64**))'
make[1]: *** [filename_list.o] Error 1
make[1]: Leaving directory `/home/newman/rpmbuild/BUILD/fltk-2.0.x-r6786/src'
make: *** [all] Error 2 | |
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| #3 | engelsman
14:29 Jun 16, 2009 |
| See also http://www.fltk.org/str.php?L2202 | |
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| The problem is not related to gcc, but to a change in glibc 2.10.
See this bug report:
http://sourceware.org/ml/glibc-bugs/2009-01/msg00109.html
and the relevant commit to glibc:
http://sources.redhat.com/git/?p=glibc.git;a=commit;h=eee6b1432794967d4272394dfe
d1e2b5cca4be39
Basic fix is trivial, change
int n = scandir(d, list, 0, (int(*)(const void*,const void*))sort);
to
int n = scandir(d, list, 0, (int(*)(const dirent **,const dirent **))sort); | |
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| #5 | mnowak
01:05 Jun 17, 2009 |
| I believe F-11 has this patch, but the compiling fails anyway. But the trivial code change helped. | |
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| You miss-understood that, the above commit is part of the regular release for glibc 2.10. WRT the bug-report all _older_ versions of glibc have wrong definitions of the related functions.
So the only clean solution for fltk is either have a #if GLIBC in the sources-files or some additions to the autoconf stuff. | |
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| #7 | mnowak
08:12 Jun 17, 2009 |
| Thanks for explanation, now it's clear. I patched Fedora's unofficial fltk2 packages to build successfully on F-11. | |
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| #8 | ianmacarthur
03:00 Jul 14, 2009 |
| From the thread:
[fltk.general] glibc scandir change for POSIX compliance [was: Re: re-install question]
it is apparent that this problem afflicts fltk-1.x variants as well.
Also, STR #2202 seems to be the same problem. | |
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| #9 | AlbrechtS
07:17 Jul 21, 2009 |
| Please try the attached patch (scandir_posix.patch) and report, if this solves the problem.
http://www.fltk.org/strfiles/2205/scandir_posix.patch | |
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| #10 | adrian7778
07:52 Jul 21, 2009 |
| Hey, I was redirected from http://www.fltk.org/str.php?L2223.
I can confirm that attached patch solves mine problem. | |
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| #11 | AlbrechtS
08:10 Jul 21, 2009 |
| Thanks for confirmation ! | |
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| #12 | AlbrechtS
16:08 Jul 23, 2009 |
| Fixed in Subversion repository.
Tested on Fedora 11 successfully.
See also STR #2202 and STR #2223. | |
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