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doc: hardcode SDK paths in meson cross-file, use \$HOME for prefix

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Using <<'EOF' prevents variable expansion so compiler paths are always
literal.  Replace \$DW_SYSROOT with \$HOME/dw-sysroot in the meson
--prefix to avoid empty-variable errors if the env var is not set.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Raymond Knopp <raymond.knopp@eurecom.fr>
This commit is contained in:
Raymond Knopp
2026-05-23 17:34:58 +00:00
parent ac3e9022e5
commit 0f9da769e1
1 changed files with 6 additions and 10 deletions
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16
doc/dragonwing-build.md
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@@ -248,12 +248,12 @@ sudo apt-get install -y meson ninja-build python3-pyelftools
#### 3.1.2 Create a meson cross-file
```shell
cat > ~/aarch64-dragonwing.ini <<EOF
cat > ~/aarch64-dragonwing.ini <<'EOF'
[binaries]
c = '${DW_TC}-gcc'
cpp = '${DW_TC}-g++'
ar = '${DW_TC}-ar'
strip = '${DW_TC}-strip'
c = '/opt/Hexagon_SDK/6.4.0.2/tools/gcc_tools_64/bin/aarch64-none-linux-gnu-gcc'
cpp = '/opt/Hexagon_SDK/6.4.0.2/tools/gcc_tools_64/bin/aarch64-none-linux-gnu-g++'
ar = '/opt/Hexagon_SDK/6.4.0.2/tools/gcc_tools_64/bin/aarch64-none-linux-gnu-ar'
strip = '/opt/Hexagon_SDK/6.4.0.2/tools/gcc_tools_64/bin/aarch64-none-linux-gnu-strip'
pkg-config = 'pkg-config'
[host_machine]
@@ -270,10 +270,6 @@ cpp_link_args = ['-L/usr/lib/aarch64-linux-gnu']
EOF
```
> **Important:** the `export DW_TC=...` and `export DW_SYSROOT=...` lines at the
> top of this section must be run in the same shell before any of the commands
> below. `$DW_SYSROOT` must be a non-empty absolute path or meson will error.
#### 3.1.3 Download, build and install
```shell
@@ -285,7 +281,7 @@ cd dpdk-stable-24.11.4
meson setup build-dragonwing \
--cross-file ~/aarch64-dragonwing.ini \
--prefix=$DW_SYSROOT \
--prefix=$HOME/dw-sysroot \
-Dplatform=generic \
-Ddisable_drivers=net/ice,net/i40e,net/iavf,net/ixgbe # trim x86 NICs
ninja -C build-dragonwing