On Thu, 3 Dec 2020 15:30:15 GMT, Magnus Ihse Bursie <i...@openjdk.org> wrote:
>> For the build to work on Windows, we need a unix compatibility layer (known
>> as the "winenv" in the build system). This can be e.g. Cygwin or Msys. The
>> build system then needs to adapt various aspect to get the build to work in
>> this winenv. Over time, our current solutions (which were never that
>> well-designed) has collapsed into an unmaintainable mess.
>>
>> This rewrite takes on a fresh approach, by giving up on the native
>> "fixpath.exe" converter, and instead relying on a platform-independent shell
>> script "fixpath.sh", which can dynamically adapt to the current winenv. It
>> also provides a proper framework on how to categorize, and support,
>> different winenvs. As a result, we now easily support Cygwin, Msys2, WSL1
>> and WSL2 (the latter is unfortunately not mature enough to be able to
>> compile the JDK).
>>
>> Furthermore, this rewrite removes all the kludges and hacks that were put in
>> place all over the code base, and consolidates all tricky part of handling
>> the winenv to basically two places: setting up in configure, and run-time
>> handling by fixpath.sh.
>>
>> This patch also cleans up our handling of how we detect tools in configure,
>> and makes a proper framework for cross-compilation on Windows.
>
> Magnus Ihse Bursie has updated the pull request incrementally with one
> additional commit since the last revision:
>
> Missed my last bugfix for fixpath.sh...
Overall this is very nice. Some comments and questions inline.
make/CreateJmods.gmk line 172:
> 170: endif
> 171: else # not java.base
> 172: ifeq ($(call isTargetOs, windows)+$(CREATING_BUILDJDK), true+false)
This looks strange. Why would CREATING_BUILDJDK be relevant here?
make/TestImage.gmk line 34:
> 32:
> 33: ifeq ($(call isTargetOs, windows), true)
> 34: FIXPATH_COPY := $(TEST_IMAGE_DIR)/bin/fixpath.sh
If fixpath.sh is now a static shell script in make/scripts, there is no need to
transport it through the test image, is there?
make/autoconf/toolchain.m4 line 838:
> 836: else
> 837: if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
> 838: # If we got no devkit, we need to go hunting for the proper env
Double space
make/autoconf/util_paths.m4 line 401:
> 399: if test "x$4" != xNOFIXPATH; then
> 400: [ if [[ $FIXPATH != "" && $result =~ ^"$FIXPATH " ]]; then
> ]
> 401: result="\$FIXPATH ${result#"$FIXPATH "}"
Maybe I'm missing something, but is this unconditionally adding fixpath to any
executable based just on if FIXPATH is set? Shouldn't there be a conditional on
if the executable is Windows or Unix type?
make/autoconf/util_paths.m4 line 482:
> 480:
> ###############################################################################
> 481: # Add FIXPATH prefix to variable. Normally this is done by
> UTIL_LOOKUP_PROGS
> 482: # or UTIL_FIXUP_EXECUTABLE, but in some circumstances this have to be
> done
this _has_ to be done
make/common/JavaCompilation.gmk line 232:
> 230: $1_JAVAC_PORT_FILE := $$(call FixPath,
> $$(JAVAC_SERVER_DIR)/server.port)
> 231:
> 232: # The servercmd specified how to launch the server. This will be
> executed
specifies
make/common/JavaCompilation.gmk line 241:
> 239:
> 240: $$($1_JAVAC_SERVER_CONFIG): $$($1_CONFIG_VARDEPS_FILE)
> 241: $(ECHO) portfile=$$($1_JAVAC_PORT_FILE) > $$@
Did you consider using WriteFile here?
make/modules/java.base/Copy.gmk line 48:
> 46:
> ################################################################################
> 47: # Copy the microsoft runtime libraries on windows
> 48: ifeq ($(call isTargetOs, windows)+$(CREATING_BUILDJDK), true+false)
Is the problem here that we don't have build versions of the runtime libraries
so we simply trust that they are present on the build host instead?
-------------
PR: https://git.openjdk.java.net/jdk/pull/1597
