On 28.11.24 17:48, Peter Polgar wrote:
This commit adds info about the needed package to cross compile
U-Boot to ARMv7 (32 bit) architecture on Debian based distros.
---
doc/build/gcc.rst | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/doc/build/gcc.rst b/doc/build/gcc.rst
index d8fcfdc4bf..c552e7b590 100644
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -19,6 +19,12 @@ You could install GCC and the GCC cross compiler
for the ARMv8 architecture with
sudo apt-get install gcc gcc-aarch64-linux-gnu
+For the ARMv7 architecture (32 bit) use the below command instead
+
+.. code-block:: bash
+
+ sudo apt-get install gcc crossbuild-essential-armhf
crossbuild-essential-armhf depends on
gcc-arm-linux-gnueabihf gcc:armhf, g++-arm-linux-gnueabihf, g++:armhf,
dpkg-cross
But gcc-arm-linux-gnueabi is all you need for cross-compiling 32-bit ARM
U-Boot.
Adding an example for every architecture seems too much to me.
Can't we simply update this sentence pointing out the the arm
cross-compiler has a suffix.
"On Debian based systems the cross compiler packages are named
gcc-<architecture>-linux-gnu".
E.g. add
"gcc-arm-linux-gnueabi is the 32-bit ARM cross-compiler package."
+
Depending on the build targets further packages maybe needed
.. code-block:: bash
@@ -118,6 +124,12 @@ Assuming cross compiling on Debian for ARMv8 this would be
CROSS_COMPILE=aarch64-linux-gnu- make
+Also on Debian but for ARMv7 it would be
+
+.. code-block:: bash
+
+ CROSS_COMPILE=arm-linux-gnueabihf- make
U-Boot supports ARM SoCs prior to ARMv7. U-Boot doesn't use floating
point. So arm-linux-gnueabi is the right choice for all 32-bit ARM boards.
Best regards
Heinrich
+
Out-of-tree building
~~~~~~~~~~~~~~~~~~~~
