fatal error: config.h: No such file or directory

[samvv]

I'm using the latest version of CMake on Arch Linux and I'm getting the following error:

$ cmake -B build -S . -G Ninja
[output omitted]
$ ninja -C build
ninja: Entering directory `build/'
[0/1] Re-running CMake...
-- Checking for module 'mpv'
--   Package 'mpv' not found
-- Configuring done (0.1s)
-- Generating done (0.0s)
-- Build files have been written to: /home/samvv/Projects/dvd_info/build
[2/9] Building C object CMakeFiles/dvd_info.dir/dvd_info.c.o
FAILED: CMakeFiles/dvd_info.dir/dvd_info.c.o 
/usr/bin/cc    -MD -MT CMakeFiles/dvd_info.dir/dvd_info.c.o -MF CMakeFiles/dvd_info.dir/dvd_info.c.o.d -o CMakeFiles/dvd_info.dir/dvd_info.c.o -c /home/samvv/Projects/dvd_info/dvd_info.c
/home/samvv/Projects/dvd_info/dvd_info.c:9:10: fatal error: config.h: No such file or directory
    9 | #include "config.h"
      |          ^~~~~~~~~~
compilation terminated.
[3/9] Building C object CMakeFiles/dvd_backup.dir/dvd_backup.c.o
FAILED: CMakeFiles/dvd_backup.dir/dvd_backup.c.o 
/usr/bin/cc    -MD -MT CMakeFiles/dvd_backup.dir/dvd_backup.c.o -MF CMakeFiles/dvd_backup.dir/dvd_backup.c.o.d -o CMakeFiles/dvd_backup.dir/dvd_backup.c.o -c /home/samvv/Projects/dvd_info/dvd_backup.c
/home/samvv/Projects/dvd_info/dvd_backup.c:22:10: fatal error: config.h: No such file or directory
   22 | #include "config.h"
      |          ^~~~~~~~~~
compilation terminated.
[4/9] Building C object CMakeFiles/dvd_copy.dir/dvd_copy.c.o
FAILED: CMakeFiles/dvd_copy.dir/dvd_copy.c.o 
/usr/bin/cc    -MD -MT CMakeFiles/dvd_copy.dir/dvd_copy.c.o -MF CMakeFiles/dvd_copy.dir/dvd_copy.c.o.d -o CMakeFiles/dvd_copy.dir/dvd_copy.c.o -c /home/samvv/Projects/dvd_info/dvd_copy.c
/home/samvv/Projects/dvd_info/dvd_copy.c:21:10: fatal error: config.h: No such file or directory
   21 | #include "config.h"
      |          ^~~~~~~~~~
compilation terminated.
ninja: build stopped: subcommand failed.

I'm guessing that something changed again in CMake, requiring (according to the example in the docs):

configure_file("config.h.in" "config.h")
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")

Alternatively one must use target_include_directories on every target.

If you want I can fire up a pull request to fix it.

[beandog]

Thanks for noticing that! It's fixed in the repo now. You'll have to manually delete config.h before a pull.

I don't know much about cmake, but I did notice that in build/ it doesn't have any of the man pages or the dvd_rip shell script, either. I'll have to figure that part out as well. So it will build the C apps, but I don't know if install would work. I'll look into it, thanks.