cblas library missing in liblapack-devel

2018-11-01 Thread Falk Tannhäuser
The package liblapack-devel (LAPACK library for linear algebra operations, see https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86_64%2Fliblapack-devel%2Fliblapack-devel-3.8.0-1=cblas) contains the header file usr/include/cblas.h (among others), library files as usr/lib/libblas.a,

Re: opencv 3.2.0-1: imshow() very slow

2017-05-13 Thread Falk Tannhäuser
Am 07.05.2017 um 21:16 schrieb René Berber: Obviously you are not running dbus-daemon, which accounts for the time-out, and the delay, but where does that dependency come from? Is it needed? apparently not. According to OpenCV's documentation

opencv 3.2.0-1: imshow() very slow

2017-05-07 Thread Falk Tannhäuser
I started to test the new OpenCV packages and I noticed that each call to the imshow() function delays for usually 25 seconds. Most of the time, the following message is displayed: ** (Great title:11352): WARNING **: Error retrieving accessibility bus address:

Re: Update to libopenblas 0.2.19-1 breaks Octave

2016-09-11 Thread Falk Tannhäuser
Hi, Finally it seems that my problems were caused by an incomplete update of cygwin1.dll from 2.5.2 to 2.6.0 and after a reboot everything works fine (cygwin 2.6.0-1 with libopenblas 0.2.19-1 and octave 4.0.1-2). So there is no bug after all - sorry for the noise! Falk cygcheck.tar.xz

Update to libopenblas 0.2.19-1 breaks Octave

2016-09-10 Thread Falk Tannhäuser
Hi, After the recent update of the OpenBLAS library from 0.2.16-1 to 0.2.19-1, I was unable to launch Octave (version 4.0.1) - neither octave-cli nor the GUI works. No error message is displayed when launching from the Bash command line, the program just silently exits, returning an exit

clang++ 3.5.2: undefined reference to `__gxx_personality_v0'

2015-06-18 Thread Falk Tannhäuser
The following little C++ program produces several linker errors of the kind /tmp/vec2-125520.o:(.xdata+0x8): undefined reference to `__gxx_personality_v0' /tmp/vec2-125520.o:(.xdata+0x8): relocation truncated to fit: rva32 against undefined symbol `__gxx_personality_v0' _

Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking

2014-11-07 Thread Falk Tannhäuser
Am 07.11.2014 um 10:32 schrieb JonY: 1.7.33 fixed the incorrect behavior that unfortunately broke gcc __cxa_atexit usage. The next 1.7.33-0.8 should be more tolerant of the old .32 behavior. After 1.7.33 is officially released, gcc-4.8.3-4 and 4.9 will switch to the standard conformant

Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking

2014-11-06 Thread Falk Tannhäuser
Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet when compiling and linking a C or C++ program. However, an executable is generated and appears to work as expected. I installed the latest test release of

Re: Fwd: gcc-4.9.2-1 (x86_64) generates segfault during linking

2014-11-06 Thread Falk Tannhäuser
Am 06.11.2014 um 23:37 schrieb JonY: On 11/7/2014 05:06, Falk Tannhäuser wrote: Since I updated gcc from version 4.9.0-1 to 4.9.2-1, I obtain the error collect2: Fehler: ld mit Signal 11 [Segmentation fault] beendet when compiling and linking a C or C++ program. However, an executable

log2() function from C standard library is inaccurate

2014-06-19 Thread Falk Tannhäuser
I noticed that the log2() function in GNU Octave returns inaccurate results for many arguments that are exactly representable integer powers of 2. After discussion on the Octave mailing list https://savannah.gnu.org/bugs/?42583 it occurs that Octave doesn't have this problem on most other

Re: Strange interaction between Cygwin/X and Mozilla Firefox Bookmarks

2013-09-28 Thread Falk Tannhäuser
Am 24.09.2013 20:49, schrieb Jon TURNEY: This is indeed a strange interaction. The problem seems to be (i) (for some reason) Firefox asks for the current clipboard contents when any of the bookmarks are clicked on, (ii) gnuplot puts an image of the current plot in the PRIMARY selection, and

Strange interaction between Cygwin/X and Mozilla Firefox Bookmarks

2013-07-21 Thread Falk Tannhäuser
I'm using Cygwin/X 1.14.2 and Mozilla Firefox 22.0. When I click on a Firefox bookmark (in the bookmark window that opens when pressing Ctrl-B) while some Cygwin/X window is active in the foreground, Firefox freezes for several seconds. During this time, in the Cygwin logfile there appear