Thread

1. Re: Meson and Numa: C header not found

   Daniel Westermann (DWE) <daniel.westermann@dbi-services.com> — 2025-04-10T17:18:31Z

   >That's just weird then.  The only other theory that comes to mind
   >is that there's something wrong with the SELinux attributes on these
   >fles.  restorecon might help if so.
   
   If that would be the case, then it is a packaging issue on Fedora, I guess.
   
   Even after restorecon I get this:
   
   Found pkg-config: YES (/usr/bin/pkg-config) 2.3.0
   Run-time dependency numa found: YES 2.0.19
   
   ../postgresql/meson.build:957:12: ERROR: C header 'numa.h' not found
   
   ... which gives this in the log:
   
   Run-time dependency numa found: YES 2.0.19
   Using cached compile:
   Cached command line:  cc /home/postgres/build/meson-private/tmpjon5_bg2/testfile.c -E -P -D_FILE_OFFSET_BITS=64 -P -O0 
   
   Code:
    
           #ifdef __has_include
            #if !__has_include("numa.h")
             #error "Header 'numa.h' could not be found"
            #endif
           #else
            #include <numa.h>
           #endif
   Cached compiler stdout:
    
   Cached compiler stderr:
    /home/postgres/build/meson-private/tmpjon5_bg2/testfile.c:4:12: error: #error "Header 'numa.h' could not be found"
       4 |           #error "Header 'numa.h' could not be found"
         |            ^~~~~
   
   
   ../postgresql/meson.build:957:12: ERROR: C header 'numa.h' not found
   
   
   Regards
   Daniel
   
   
   

2. Re: Meson and Numa: C header not found

   Tom Lane <tgl@sss.pgh.pa.us> — 2025-04-10T17:45:03Z

   "Daniel Westermann (DWE)" <daniel.westermann@dbi-services.com> writes:
   > Even after restorecon I get this:
   
   > Found pkg-config: YES (/usr/bin/pkg-config) 2.3.0
   > Run-time dependency numa found: YES 2.0.19
   
   > ../postgresql/meson.build:957:12: ERROR: C header 'numa.h' not found
   
   > ... which gives this in the log:
   
   > Run-time dependency numa found: YES 2.0.19
   > Using cached compile:
   > Cached command line:  cc /home/postgres/build/meson-private/tmpjon5_bg2/testfile.c -E -P -D_FILE_OFFSET_BITS=64 -P -O0 
   
   Ah-hah: the "cached" bit gave me the clue I needed.  I think
   you ran "meson setup" without numactl-devel installed, and it
   cached the fact that numa.h wasn't there.  I can reproduce
   this error with
   
   $ sudo dnf remove numactl-devel
   $ git clean -dfxq
   $ meson setup build
   $ sudo dnf install numactl-devel
   $ meson setup build --reconfigure
   
   ... which ends with
   
   Run-time dependency numa found: YES 2.0.19
   
   meson.build:957:12: ERROR: C header 'numa.h' not found
   
   It's okay again after blowing away the build subdirectory
   (e.g. via "git clean -dfxq") and trying again.
   
   This implies that it caches info about header presence but
   not library presence (else it wouldn't have thought that
   the library was there either, I guess).  Kind of weird,
   but I'm still learning about meson.
   
   			regards, tom lane
   
   
   
   

3. Re: Meson and Numa: C header not found

   Daniel Westermann (DWE) <daniel.westermann@dbi-services.com> — 2025-04-11T03:57:03Z

   >This implies that it caches info about header presence but
   >not library presence (else it wouldn't have thought that
   >the library was there either, I guess).  Kind of weird,
   >but I'm still learning about meson.
   
   Thanks, Tom, Confirmed, starting from scratch does not show the issue anymore.
   
   Regards
   Daniel