Cross-compiling Panama: clang_getClangVersion detection

[Maurizio Cimadamore]

Pushed - thanks!

Maurizio

On 31/05/2019 09:57, Maurizio Cimadamore wrote:
> Looks good I'll push
>
> Maurizio
>
> On 31/05/2019 09:24, Aleksey Shipilev wrote:
>> Hi,
>>
>> I was trying to build aarch64 in "foreign" and ran into trouble. My 
>> CI cross-compiles with base
>> system cross-compiler. Which means it can compile the binaries, but 
>> cannot execute them, including
>> those configure tries to test. So, configure fails with:
>>
>> checking for clang_getClangVersion in -lclang... no
>> configure: error: Cannot locate libclang or headers at the specified 
>> locations:
>>              /home/buildbot/deps/clang-llvm/aarch64/lib
>>              /home/buildbot/deps/clang-llvm/aarch64/include
>>
>> Configure and build passes after the hack like this:
>>
>> diff -r f94dd38a20f4 make/autoconf/lib-clang.m4
>> --- a/make/autoconf/lib-clang.m4    Wed May 29 23:14:34 2019 +0200
>> +++ b/make/autoconf/lib-clang.m4    Thu May 30 22:34:38 2019 +0200
>> @@ -120,7 +120,7 @@
>>
>>        AC_CHECK_HEADER("clang-c/Index.h", [], [ENABLE_LIBCLANG="false"])
>>        if test "x$ENABLE_LIBCLANG" = "xtrue"; then
>> -      if test "x$TOOLCHAIN_TYPE" = "xmicrosoft"; then
>> +      if test "x$TOOLCHAIN_TYPE" = "xmicrosoft" || test 
>> "x$COMPILE_TYPE" = "xcross"; then
>>            # Just trust the lib is there
>>            LIBS=$LIBCLANG_LIBS
>>          else
>>
>> If that makes sense, can you please push this into Panama somewhere?
>>