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8265343: Update Debian-based cross-compilation recipes

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Reviewed-by: erikj
This commit is contained in:
Aleksey Shipilev 2021-04-21 10:44:19 +00:00
parent 98cb81b381
commit 7879adbe88
2 changed files with 115 additions and 44 deletions
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doc/building.html
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@ -76,7 +76,7 @@
<li><a href="#specifying-the-target-platform">Specifying the Target Platform</a></li>
<li><a href="#toolchain-considerations">Toolchain Considerations</a></li>
<li><a href="#native-libraries">Native Libraries</a></li>
<li><a href="#creating-and-using-sysroots-with-qemu-deboostrap">Creating And Using Sysroots With qemu-deboostrap</a></li>
<li><a href="#cross-compiling-with-debian-sysroots">Cross compiling with Debian sysroots</a></li>
<li><a href="#building-for-armaarch64">Building for ARM/aarch64</a></li>
<li><a href="#building-for-musl">Building for musl</a></li>
<li><a href="#verifying-the-build">Verifying the Build</a></li>
@ -628,7 +628,7 @@ cp: cannot stat `arm-linux-gnueabihf/libSM.so&#39;: No such file or directory
cp: cannot stat `arm-linux-gnueabihf/libXt.so&#39;: No such file or directory</code></pre></li>
<li><p>If the X11 libraries are not properly detected by <code>configure</code>, you can point them out by <code>--with-x</code>.</p></li>
</ul>
<h3 id="creating-and-using-sysroots-with-qemu-deboostrap">Creating And Using Sysroots With qemu-deboostrap</h3>
<h3 id="cross-compiling-with-debian-sysroots">Cross compiling with Debian sysroots</h3>
<p>Fortunately, you can create sysroots for foreign architectures with tools provided by your OS. On Debian/Ubuntu systems, one could use <code>qemu-deboostrap</code> to create the <em>target</em> system chroot, which would have the native libraries and headers specific to that <em>target</em> system. After that, we can use the cross-compiler on the <em>build</em> system, pointing into chroot to get the build dependencies right. This allows building for foreign architectures with native compilation speed.</p>
<p>For example, cross-compiling to AArch64 from x86_64 could be done like this:</p>
<ul>
@ -638,7 +638,7 @@ cp: cannot stat `arm-linux-gnueabihf/libXt.so&#39;: No such file or directory</c
<pre><code>sudo qemu-debootstrap \
--arch=arm64 \
--verbose \
--include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev \
--include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
--resolve-deps \
buster \
~/sysroot-arm64 \
@ -646,67 +646,125 @@ cp: cannot stat `arm-linux-gnueabihf/libXt.so&#39;: No such file or directory</c
<li><p>Make sure the symlinks inside the newly created chroot point to proper locations:</p>
<pre><code>sudo chroot ~/sysroot-arm64 symlinks -cr .</code></pre></li>
<li><p>Configure and build with newly created chroot as sysroot/toolchain-path:</p>
<pre><code>CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ sh ./configure \
<pre><code>sh ./configure \
--openjdk-target=aarch64-linux-gnu \
--with-sysroot=~/sysroot-arm64 \
--with-toolchain-path=~/sysroot-arm64 \
--with-freetype-lib=~/sysroot-arm64/usr/lib/aarch64-linux-gnu/ \
--with-freetype-include=~/sysroot-arm64/usr/include/freetype2/ \
--x-libraries=~/sysroot-arm64/usr/lib/aarch64-linux-gnu/
--with-sysroot=~/sysroot-arm64
make images
ls build/linux-aarch64-server-release/</code></pre></li>
</ul>
<p>The build does not create new files in that chroot, so it can be reused for multiple builds without additional cleanup.</p>
<p>The build system should automatically detect the toolchain paths and dependencies, but sometimes it might require a little nudge with:</p>
<ul>
<li><p>Native compilers: override <code>CC</code> or <code>CXX</code> for <code>./configure</code></p></li>
<li><p>Freetype lib location: override <code>--with-freetype-lib</code>, for example <code>${sysroot}/usr/lib/${target}/</code></p></li>
<li><p>Freetype includes location: override <code>--with-freetype-include</code> for example <code>${sysroot}/usr/include/freetype2/</code></p></li>
<li><p>X11 libraries location: override <code>--x-libraries</code>, for example <code>${sysroot}/usr/lib/${target}/</code></p></li>
</ul>
<p>Architectures that are known to successfully cross-compile like this are:</p>
<table>
<thead>
<tr class="header">
<th style="text-align: left;">Target</th>
<th style="text-align: left;"><code>CC</code></th>
<th style="text-align: left;"><code>CXX</code></th>
<th style="text-align: left;"><code>--arch=...</code></th>
<th style="text-align: left;">Debian tree</th>
<th style="text-align: left;">Debian arch</th>
<th style="text-align: left;"><code>--openjdk-target=...</code></th>
<th><code>--with-jvm-variants=...</code></th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td style="text-align: left;">x86</td>
<td style="text-align: left;">default</td>
<td style="text-align: left;">default</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">i386</td>
<td style="text-align: left;">i386-linux-gnu</td>
<td>(all)</td>
</tr>
<tr class="even">
<td style="text-align: left;">armhf</td>
<td style="text-align: left;">gcc-arm-linux-gnueabihf</td>
<td style="text-align: left;">g++-arm-linux-gnueabihf</td>
<td style="text-align: left;">arm</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">armhf</td>
<td style="text-align: left;">arm-linux-gnueabihf</td>
<td>(all)</td>
</tr>
<tr class="odd">
<td style="text-align: left;">aarch64</td>
<td style="text-align: left;">gcc-aarch64-linux-gnu</td>
<td style="text-align: left;">g++-aarch64-linux-gnu</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">arm64</td>
<td style="text-align: left;">aarch64-linux-gnu</td>
<td>(all)</td>
</tr>
<tr class="even">
<td style="text-align: left;">ppc64el</td>
<td style="text-align: left;">gcc-powerpc64le-linux-gnu</td>
<td style="text-align: left;">g++-powerpc64le-linux-gnu</td>
<td style="text-align: left;">ppc64le</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">ppc64el</td>
<td style="text-align: left;">powerpc64le-linux-gnu</td>
<td>(all)</td>
</tr>
<tr class="odd">
<td style="text-align: left;">s390x</td>
<td style="text-align: left;">gcc-s390x-linux-gnu</td>
<td style="text-align: left;">g++-s390x-linux-gnu</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">s390x</td>
<td style="text-align: left;">s390x-linux-gnu</td>
<td>(all)</td>
</tr>
<tr class="even">
<td style="text-align: left;">mipsle</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">mipsel</td>
<td style="text-align: left;">mipsel-linux-gnu</td>
<td>zero</td>
</tr>
<tr class="odd">
<td style="text-align: left;">mips64le</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">mips64el</td>
<td style="text-align: left;">mips64el-linux-gnueabi64</td>
<td>zero</td>
</tr>
<tr class="even">
<td style="text-align: left;">armel</td>
<td style="text-align: left;">buster</td>
<td style="text-align: left;">arm</td>
<td style="text-align: left;">arm-linux-gnueabi</td>
<td>zero</td>
</tr>
<tr class="odd">
<td style="text-align: left;">ppc</td>
<td style="text-align: left;">sid</td>
<td style="text-align: left;">powerpc</td>
<td style="text-align: left;">powerpc-linux-gnu</td>
<td>zero</td>
</tr>
<tr class="even">
<td style="text-align: left;">ppc64be</td>
<td style="text-align: left;">sid</td>
<td style="text-align: left;">ppc64</td>
<td style="text-align: left;">powerpc64-linux-gnu</td>
<td>(all)</td>
</tr>
<tr class="odd">
<td style="text-align: left;">m68k</td>
<td style="text-align: left;">sid</td>
<td style="text-align: left;">m68k</td>
<td style="text-align: left;">m68k-linux-gnu</td>
<td>zero</td>
</tr>
<tr class="even">
<td style="text-align: left;">alpha</td>
<td style="text-align: left;">sid</td>
<td style="text-align: left;">alpha</td>
<td style="text-align: left;">alpha-linux-gnu</td>
<td>zero</td>
</tr>
<tr class="odd">
<td style="text-align: left;">sh4</td>
<td style="text-align: left;">sid</td>
<td style="text-align: left;">sh4</td>
<td style="text-align: left;">sh4-linux-gnu</td>
<td>zero</td>
</tr>
</tbody>
</table>
<p>Additional architectures might be supported by Debian/Ubuntu Ports.</p>
<h3 id="building-for-armaarch64">Building for ARM/aarch64</h3>
<p>A common cross-compilation target is the ARM CPU. When building for ARM, it is useful to set the ABI profile. A number of pre-defined ABI profiles are available using <code>--with-abi-profile</code>: arm-vfp-sflt, arm-vfp-hflt, arm-sflt, armv5-vfp-sflt, armv6-vfp-hflt. Note that soft-float ABIs are no longer properly supported by the JDK.</p>
<h3 id="building-for-musl">Building for musl</h3>

47
doc/building.md
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@ -1089,7 +1089,7 @@ Note that X11 is needed even if you only want to build a headless JDK.
* If the X11 libraries are not properly detected by `configure`, you can
point them out by `--with-x`.
### Creating And Using Sysroots With qemu-deboostrap
### Cross compiling with Debian sysroots
Fortunately, you can create sysroots for foreign architectures with tools
provided by your OS. On Debian/Ubuntu systems, one could use `qemu-deboostrap` to
@ -1110,7 +1110,7 @@ For example, cross-compiling to AArch64 from x86_64 could be done like this:
sudo qemu-debootstrap \
--arch=arm64 \
--verbose \
--include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev \
--include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
--resolve-deps \
buster \
~/sysroot-arm64 \
@ -1124,13 +1124,9 @@ For example, cross-compiling to AArch64 from x86_64 could be done like this:
* Configure and build with newly created chroot as sysroot/toolchain-path:
```
CC=aarch64-linux-gnu-gcc CXX=aarch64-linux-gnu-g++ sh ./configure \
sh ./configure \
--openjdk-target=aarch64-linux-gnu \
--with-sysroot=~/sysroot-arm64 \
--with-toolchain-path=~/sysroot-arm64 \
--with-freetype-lib=~/sysroot-arm64/usr/lib/aarch64-linux-gnu/ \
--with-freetype-include=~/sysroot-arm64/usr/include/freetype2/ \
--x-libraries=~/sysroot-arm64/usr/lib/aarch64-linux-gnu/
--with-sysroot=~/sysroot-arm64
make images
ls build/linux-aarch64-server-release/
```
@ -1138,17 +1134,34 @@ For example, cross-compiling to AArch64 from x86_64 could be done like this:
The build does not create new files in that chroot, so it can be reused for multiple builds
without additional cleanup.
The build system should automatically detect the toolchain paths and dependencies, but sometimes
it might require a little nudge with:
* Native compilers: override `CC` or `CXX` for `./configure`
* Freetype lib location: override `--with-freetype-lib`, for example `${sysroot}/usr/lib/${target}/`
* Freetype includes location: override `--with-freetype-include` for example `${sysroot}/usr/include/freetype2/`
* X11 libraries location: override `--x-libraries`, for example `${sysroot}/usr/lib/${target}/`
Architectures that are known to successfully cross-compile like this are:
Target `CC` `CXX` `--arch=...` `--openjdk-target=...`
------------ ------------------------- --------------------------- ------------- -----------------------
x86 default default i386 i386-linux-gnu
armhf gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf armhf arm-linux-gnueabihf
aarch64 gcc-aarch64-linux-gnu g++-aarch64-linux-gnu arm64 aarch64-linux-gnu
ppc64el gcc-powerpc64le-linux-gnu g++-powerpc64le-linux-gnu ppc64el powerpc64le-linux-gnu
s390x gcc-s390x-linux-gnu g++-s390x-linux-gnu s390x s390x-linux-gnu
Additional architectures might be supported by Debian/Ubuntu Ports.
Target Debian tree Debian arch `--openjdk-target=...` `--with-jvm-variants=...`
------------ ------------ ------------- ------------------------ --------------
x86 buster i386 i386-linux-gnu (all)
arm buster armhf arm-linux-gnueabihf (all)
aarch64 buster arm64 aarch64-linux-gnu (all)
ppc64le buster ppc64el powerpc64le-linux-gnu (all)
s390x buster s390x s390x-linux-gnu (all)
mipsle buster mipsel mipsel-linux-gnu zero
mips64le buster mips64el mips64el-linux-gnueabi64 zero
armel buster arm arm-linux-gnueabi zero
ppc sid powerpc powerpc-linux-gnu zero
ppc64be sid ppc64 powerpc64-linux-gnu (all)
m68k sid m68k m68k-linux-gnu zero
alpha sid alpha alpha-linux-gnu zero
sh4 sid sh4 sh4-linux-gnu zero
### Building for ARM/aarch64