Use gcc-7 to build.

GCC 11 build worked, but on importing blis in python, it produced this error: blis/cy.cpython-36m-aarch64-linux-gnu.so: undefined symbol: __aarch64_ldeor8_rel Building with gcc 7 seems to work, although I have not investigated why
jetson-nano-wheels · Aug 23, 2021 · 9e1acfd · 9e1acfd
1 parent 788741c
commit 9e1acfd
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Showing 3 changed files with 12 additions and 2 deletions.
diff --git a/build.sh b/build.sh
@@ -5,5 +5,12 @@ source venv/bin/activate
 
 source jetson-nano-wheels/commons/envs.sh
 
-PIP_CONSTRAINT=constraint.txt \
-	      pip wheel -vv --only-binary 'numpy' --no-binary 'blis' 'blis>=0.4.0,<0.8.0' -w dist
+# Override these. Blis build only seems to work (i.e. can be successfully
+# imported) when using gcc version 7.
+export CC=gcc-7
+export CXX=g++-7
+export FC=gfortran-7
+
+BLIS_ARCH=cortexa57 \
+  PIP_CONSTRAINT=constraints.txt \
+  pip wheel -vv -c constraints.txt --no-binary 'blis' 'blis>=0.4.0,<0.8.0' -w dist
diff --git a/constraint.txt → constraints.txt b/constraint.txt → constraints.txt
diff --git a/init.sh b/init.sh
@@ -10,3 +10,6 @@ fi
 
 pip install 'https://github.com/jetson-nano-wheels/python3.6-numpy-1.19.4/releases/download/v0.0.2/numpy-1.19.4-cp36-cp36m-linux_aarch64.whl'
 
+deactivate
+
+# Note to self: building blis from source did not work.