[swift-dev] Building Foundation on FreeBSD

[Davide Italiano]

On Sun, Dec 20, 2015 at 5:07 AM, Davide Italiano <dccitaliano at gmail.com> wrote:
> On Sat, Dec 19, 2015 at 11:28 PM, Jordan Rose <jordan_rose at apple.com> wrote:
>>
>> On Dec 19, 2015, at 7:14 , Davide Italiano <dccitaliano at gmail.com> wrote:
>>
>> On Fri, Dec 18, 2015 at 7:58 AM, Davide Italiano <dccitaliano at gmail.com>
>> wrote:
>>
>> On Wed, Dec 16, 2015 at 2:25 PM, Jordan Rose <jordan_rose at apple.com> wrote:
>>
>>
>> On Dec 16, 2015, at 11:21 , Davide Italiano <dccitaliano at gmail.com> wrote:
>>
>> On Wed, Dec 16, 2015 at 11:17 AM, Jordan Rose <jordan_rose at apple.com> wrote:
>>
>> What's the compile command for the files that are failing? If the target
>> triple there doesn't include a version number, it might be defaulting to
>> something like "1.0".
>>
>> Jordan
>>
>>
>> I see many of these, here's an example:
>> http://people.freebsd.org/~davide/swift/modules_failure.txt
>>
>> BTW, the triple includes a version number (freebsd-unknown-11.0)
>>
>>
>> Ah, not the one I see: "-target x86_64-unknown-freebsd". Try adding "11.0"
>> to that. (Presumably it comes from the Foundation build script, so you might
>> have to find where it's being passed down.)
>>
>>
>> Thanks!
>> I followed your suggestion and I was able to make progress.
>> While we're at this -- I had another issue with modules (when running
>> testsuite) that I wasn't able to solve (and which causes a lot of test
>> failures because Objective-C modules can't be build), i.e. missing
>> headers.
>>
>> Command Output (stderr):
>> --
>> <module-includes>:1:10: note: in file included from <module-includes>:1:
>> #include "/usr/include/complex.h"
>>         ^
>> /usr/include/complex.h:32:10: error: 'sys/cdefs.h' file not found with
>> <angled> include; use "quotes" instead
>> #include <sys/cdefs.h>
>>         ^
>> <module-includes>:2:10: note: in file included from <module-includes>:2:
>> #include "/usr/include/ctype.h"
>>         ^
>> /usr/include/ctype.h:44:10: error: 'sys/cdefs.h' file not found with
>> <angled> include; use "quotes" instead
>> #include <sys/cdefs.h>
>>         ^
>> [...]
>>
>>
>> I tracked this one down and realized the problem is that include paths
>> (i.e. /usr/include) aren't passed correctly to swiftc in  the tests. I
>> worked around
>> this passing -I/usr/include but I'd like to fix this right for
>> FreeBSD. Where's the correct place where CXXFLAGS and LDFLAGS should
>> be passed?
>>
>>
>> Hm. The Clang inside Swift should be supplying by default just from the
>> target triple. If you pass "-Xcc -v" to swiftc it should dump the default
>> search paths for your platform. What does that look like?
>>
>> Jordan
>
> clang version 3.8.0 (https://github.com/apple/swift-clang.git
> f66c5bb67b9a1016b51d2eff0f497d4528dacc0a)
> (https://github.com/apple/swift-llvm.git
> 3ebdbb2c7e5ce577363994fd0aa0f8409bc68490)
> Target: x86_64-unknown-freebsd11.0-CURRENT
> Thread model: posix
> InstalledDir:
> #include "..." search starts here:
> #include <...> search starts here:
>  /exps/swift/build/Ninja-ReleaseAssert/swift-freebsd-x86_64/lib/swift
>  /exps/swift/build/Ninja-ReleaseAssert/swift-freebsd-x86_64/lib/swift/clang/include
> End of search list.
>
> hmm -- /usr/include is not there although I expect that to be a
> reasonably standard place to look for headers (at least in FreeBSD).
> Maybe the driver should grow to take this in account? What do you
> think?
>

Just FYI, clang seems to pass the correct path for C/C++.

$ ./clang blah.c -v
clang version 3.8.0 (trunk 256106)
Target: x86_64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /exps/llvm-lld/build/bin/.
 "/exps/llvm-lld/build/bin/clang-3.8" -cc1 -triple
x86_64-unknown-freebsd11.0 -emit-obj -mrelax-all -disable-free
-main-file-name blah.c -mrelocation-model static -mthread-model posix
-mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables
-target-cpu x86-64 -v -dwarf-column-info -debugger-tuning=lldb
-resource-dir /exps/llvm-lld/build/bin/../lib/clang/3.8.0
-fdebug-compilation-dir /exps/llvm-lld/build/bin -ferror-limit 19
-fmessage-length 197 -fobjc-runtime=gnustep -fdiagnostics-show-option
-fcolor-diagnostics -o /tmp/blah-b46104.o -x c blah.c
clang -cc1 version 3.8.0 based upon LLVM 3.8.0svn default target
x86_64-unknown-freebsd11.0
#include "..." search starts here:
#include <...> search starts here:
 /exps/llvm-lld/build/bin/../lib/clang/3.8.0/include
 /usr/include

$ cat blah.c
#include <sys/types.h>

int
main(void)
{
  return (0);
}