On Tue, 13 Jun 2023 17:09:30 GMT, Jorn Vernee <jver...@openjdk.org> wrote:
>> Update the make/autoconf/lib-ffi.m4 script to support using libffi on >> Windows and Mac. >> >> For Windows I had to tweak `fallbackLinker.c` to be able to build: there was >> an import of `stdint.h` missing, and since it was using `WSAGetLastError` it >> needed to link against `ws2_32.lib`. >> >> This PR also contains a fix originally made by @shipilev as part of: >> https://github.com/openjdk/jdk/pull/13827 (with a minor tweak), in order to >> be able to build the fallback linker on mac correctly. I also disabled 3 >> failing tests in the jdk_foreign suite on that platform. >> >> --- >> >> I've updated the `createLibffiBundle.sh` script for Mac, since I got it to >> work with a devkit, but I didn't manage to do the same for Windows. The >> steps I took to make my Windows libffi bundle were as follows: >> 1. run 'x64 Native Tools Command Prompt for VS 2022'. cl.exe and link.exe >> should be on path >> 2. run `ucrt64` (this is one of the shell environments that comes with >> MSYS2). This should carry over the environment set up by the VS dev prompt. >> 3. then, in the libffi repo root folder: >> 3.a run `autogen.sh` >> 3.b run: >> >> bash configure \ >> CC="/path/to/libffi/msvcc.sh -m64" \ >> CXX="/path/to/libffi/msvcc.sh -m64" \ >> CPPFLAGS="-DFFI_BUILDING_DLL" \ >> --disable-docs \ >> --prefix=<install dest> >> >> (`<install dest>` can be whatever you like. That's what you point >> `--with-libffi` to). >> >> 4. run `make install`. This should create the `<intstall dest>` directory >> with the files: `include/ffi.h`, `include/ffitarget.h`, `lib/libffi.dll`. It >> also creates a `lib/libffi.lib` file, but it is of the wrong file type, >> `DLL` rather than `LIBRARY`. >> 5. Manually create a working `.lib` file: >> 5.a use `dumpbin /exports libffi.dll` to get a list of exported symbols >> 5.b put them in a `libffi.def` file: `EXPORTS` on the first line, then a >> symbol on each line following >> 5.c run `lib /def:libffi.def /machine:x64 /out:libffi.lib` to create the >> right `.lib` file (`lib` is a visual studio tool) >> >> --- >> >> Testing: >> - manual testing on Windows/x64 and Mac/AArch64, by running the >> `jdk_foreign` test suite with `-Djdk.internal.foreign.CABI=FALLBACK` (i.e. >> using the fallback linker). >> - Linux/x64 Zero test run of the `jdk_foreign` suite >> - Linux/AArch64 Zero build > > Jorn Vernee has updated the pull request incrementally with two additional > commits since the last revision: > > - missing changes > - Address review comments: > - Tab to spaces in java.base/Lib.gmk > - Add comment with Windows build instructions to createLibffiBundle.sh Marked as reviewed by erikj (Reviewer). ------------- PR Review: https://git.openjdk.org/jdk/pull/14446#pullrequestreview-1477706215
