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Old 17th September 2017
puffymon puffymon is offline
Real Name: Leonid
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Default Compiler doesn't see headers in /usr/local/include

Hi. If I'm trying to compile anything manually and program includes headers from /usr/local/include, compilers (clang and gcc) print that files are not found and I have to manually edit these programs and change #include <file.h> to #include "/full/path/to/file.h". That problem appeared when I made a fresh install of OpenBSD snapshot.
Example compilations:
Code:
$ gcc test.c             
test.c:1:19: error: check.h: No such file or directory
$ cat test.c             
#include <check.h>

int main()
{
        return 0;
}
$ ls /usr/local/include/check*                                                                                                                                                                                                 
/usr/local/include/check.h           /usr/local/include/check_stdint.h
$ cmake ..
-- The C compiler identification is Clang 4.0.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/uTox/build
$ make
Scanning dependencies of target utoxAV
[  1%] Building C object CMakeFiles/utoxAV.dir/src/av/utox_av.c.o
In file included from /tmp/uTox/src/av/utox_av.c:2:
/tmp/uTox/src/av/utox_av.h:5:10: fatal error: 'tox/toxav.h' file not found
#include <tox/toxav.h>
         ^~~~~~~~~~~~~
1 error generated.
*** Error 1 in . (CMakeFiles/utoxAV.dir/build.make:63 'CMakeFiles/utoxAV.dir/src/av/utox_av.c.o': /usr/bin/cc  -I/usr/include/freetype2  -Wa...)
*** Error 1 in . (CMakeFiles/Makefile2:68 'CMakeFiles/utoxAV.dir/all')
*** Error 1 in /tmp/uTox/build (Makefile:130 'all')
$ ls /usr/local/include/tox/
tox.h            toxav.h          toxdns.h         toxencryptsave.h
$ uname -a
OpenBSD puffy.pc 6.2 GENERIC.MP#98 amd64
$
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Old 17th September 2017
TronDD TronDD is offline
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Join Date: Sep 2014
Posts: 304
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You need to add -I/usr/local/include to your build command.

Not sure why CMake isn't picking it up for uTox, though.
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Old 17th September 2017
ibara ibara is offline
OpenBSD language porter
 
Join Date: Jan 2014
Posts: 783
Default

That's not how the compiler works. It doesn't know about any include directories you don't explicitly tell it about (it is told about /usr/include you just don't see it).

This is important for keeping base and ports separate. Having -I/usr/local/include in base compiles could be catastrophic. Same for /usr/X11R6, which is also kept separate.

If you need to add -I/usr/local/include to a CMake compile, add:
Code:
include_directories(${OPENBSD_LOCALBASE}/include)
to the top CMakeLists.txt.
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