Recent changes to bugs

#24 comedi_get_cmd_generic_timed configure test failed

Brent Baccala — Fri, 11 Jul 2025 17:18:07 -0000

Commit 0107c7 should fix this

#24 comedi_get_cmd_generic_timed configure test failed

franta — Mon, 30 Jun 2025 07:02:20 -0000

After some search, it seems as a temporary crutch, changing CFLAGS during configure can be used:

%configure CFLAGS="%{optflags} -Wno-implicit-int -Wno-int-conversion"

(in my case, change is in RPM packager xoscope.spec file)

comedi_get_cmd_generic_timed configure test failed

franta — Sun, 29 Jun 2025 09:09:50 -0000

When compile xoscope-2.3 (with comedilib-0.13.0 or comedilib-0.12.0) on Fedora 42 x86_64 / gcc-15.1.1, configure test for 4 or 5 comedi_get_cmd_generic_timed(5 parameters) failed for some other reason than parameter number - and then test is incorrectly evaluated as if routine need only 4 parameters. The related part from config.log:

...
configure:8345: checking how many arguments comedi_get_cmd_generic_timed takes
configure:8355: gcc -c -g -O2 -Wall  conftest.c >&5
conftest.c:27:1: error: return type defaults to 'int' [-Wimplicit-int]
   27 | main() {
      | ^~~~
conftest.c: In function 'main':
conftest.c:28:43: error: passing argument 2 of 'comedi_get_cmd_generic_timed' makes integer from pointer without a cast [-Wint-conversion]
   28 |        comedi_get_cmd_generic_timed(NULL, NULL, NULL, 0, 0);
      |                                           ^~~~
      |                                           |
      |                                           void *
In file included from conftest.c:26:
/usr/include/comedilib.h:193:61: note: expected 'unsigned int' but argument is of type 'void *'
  193 | int comedi_get_cmd_generic_timed(comedi_t *dev,unsigned int subdevice,
      |                                                ~~~~~~~~~~~~~^~~~~~~~~
configure:8355: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "xoscope"
| #define PACKAGE_TARNAME "xoscope"
| #define PACKAGE_VERSION "2.3"
| #define PACKAGE_STRING "xoscope 2.3"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "xoscope"
| #define VERSION "2.3"
| #define HAVE_STDIO_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_UNISTD_H 1
| #define HAVE_SYS_TIME_H 1
| #define STDC_HEADERS 1
| #define PERL "/usr/bin/perl"
| #define HAVE_LIBM 1
| #define HAVE_LIBCOMEDI 1
| /* end confdefs.h.  */
| 
| #include <comedilib.h>
| main() {
|        comedi_get_cmd_generic_timed(NULL, NULL, NULL, 0, 0);
| }
configure:8371: result: 4
...

Does anyone have an idea how to fix the test?

Build fails with LTO

Eli Schwartz — Sun, 07 Apr 2024 20:05:11 -0000

I tried to build with the following *FLAGS to optimize the build: -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing

Note the -Werror=* flags are used to help detect cases where the compiler tries to optimize by assuming UB cannot exist in the source code -- if it does exist, ordinarily the code would be miscompiled, and this says to make the miscompilation a fatal error.

I got this error:

x86_64-pc-linux-gnu-gcc  -march=native -fstack-protector-all -O2 -pipe -fdiagnostics-color=always -frecord-gcc-switches -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing  -Wformat -Werror=format-security -Werror=implicit-function-declaration -Werror=implicit-int -Werror=int-conversion -Werror=incompatible-pointer-types -Wall -Wl,--export-dynamic -Wl,-O1 -Wl,--as-needed -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing -Wl,--defsym=__gentoo_check_ldflags__=0 -o xoscope xoscope.o xoscope_gtk.o file.o func.o display.o  alsa.o fft.o -lgtk-3 -lgdk-3 -lharfbuzz -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo -lcairo-gobject -lgdk_pixbuf-2.0 -lgio-2.0 -lglib-2.0 -lgobject-2.0 -lgtkdatabox -lgtk-3 -lgdk-3 -lharfbuzz -lpangocairo-1.0 -latk-1.0 -lcairo-gobject -lgdk_pixbuf-2.0 -lgio-2.0 -lglib-2.0 -lgobject-2.0 -lpango-1.0 -lcairo -lasound -lfftw3 -lm 
file.h:11:6: error: type of ‘handle_opt’ does not match original declaration [-Werror=lto-type-mismatch]
   11 | void handle_opt(char opt, char *optarg);
      |      ^
file.c:38:6: note: type mismatch in parameter 1
   38 | void handle_opt(int opt, char *optarg)
      |      ^
file.c:38:6: note: type ‘int’ should match type ‘char’
file.c:38:6: note: ‘handle_opt’ was previously declared here
lto1: some warnings being treated as errors
lto-wrapper: fatal error: x86_64-pc-linux-gnu-gcc returned 1 exit status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:485: xoscope] Error 1

Originally reported downstream: https://bugs.gentoo.org/927483
Full build log is attached.

#22 Does not compile on Ubuntu 18.04 - cannot find GTK

Brent Baccala — Fri, 19 Feb 2021 20:26:58 -0000

Fix this by installing the GTK 2 development package:

sudo apt install libgtk2.0-dev

Does not compile on Ubuntu 18.04 - cannot find GTK

Joe Smith — Tue, 01 Sep 2020 10:18:32 -0000

checking for ANSI C header files... yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for GTK... no
configure: error: Package requirements (gtk+-2.0 >= 2.2) were not met:

No package 'gtk+-2.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables GTK_CFLAGS
and GTK_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
 joe-pc> ls -R /usr/lib/x86_64-linux-gnu/libgtk*
/usr/lib/x86_64-linux-gnu/libgtk-3.so@
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0@
/usr/lib/x86_64-linux-gnu/libgtk-3.so.0.2200.30
/usr/lib/x86_64-linux-gnu/libgtksourceview-3.0.so.1@
/usr/lib/x86_64-linux-gnu/libgtksourceview-3.0.so.1.8.0
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0@
/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.32

/usr/lib/x86_64-linux-gnu/libgtk2.0-0:
gtk-query-immodules-2.0*

/usr/lib/x86_64-linux-gnu/libgtk-3-0:
gtk-query-immodules-3.0*


root@joe-pc:~# apt install gtk-2.0
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'gir1.2-gtk-2.0' for regex 'gtk-2.0'
Note, selecting 'libspice-client-gtk-2.0-1' for regex 'gtk-2.0'
Note, selecting 'gir1.0-gtk-2.0' for regex 'gtk-2.0'
gir1.2-gtk-2.0 is already the newest version (2.24.32-1ubuntu1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

#21 segmentation fault on archlinux x86_64

magiblot 1 — Sun, 03 Jun 2018 18:42:17 -0000

Discussion going on here as well:
https://sourceforge.net/p/xoscope/discussion/23485/thread/2c86f09a/
No reply from the devs at the moment.

segmentation fault on archlinux x86_64

Koen van Vliet — Tue, 16 Jan 2018 21:34:34 -0000

Upon launching the application, the window briefly appears and then a segfault occurs.
I am using Manjaro 17.1.1 with kernel x86_64 Linux 4.14.13-1-MANJARO

(xoscope:9644): Gdk-CRITICAL **: gdk_window_move_resize_internal: assertion 'GDK_IS_WINDOW (window)' failed

(xoscope:9644): Gdk-CRITICAL **: _gdk_pixmap_new: assertion '(drawable != NULL) || (depth != -1)' failed
Segmentation fault (core dumped)

strace output:

#19 [PATCH] Bug on bugs.debian.org

Brent Baccala — Fri, 23 Dec 2016 06:11:11 -0000

status: open --> closed-fixed
Group: -->

#20 AppStream compatible icon for their application

Brent Baccala — Fri, 23 Dec 2016 06:08:50 -0000

status: open --> closed-fixed
Group: -->