diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index 751bff2..0285226 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -33,6 +33,7 @@ jobs:
     needs: [build_stencils]
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
 
@@ -63,7 +64,7 @@ jobs:
         run: cibuildwheel --output-dir wheelhouse
         env:
           # Multi-arch builds
-          CIBW_ARCHS_LINUX: "x86_64 aarch64 armv7" # ppc64le s390x
+          CIBW_ARCHS_LINUX: "x86_64 aarch64"
           CIBW_ARCHS_MACOS: "universal2" # x86_64 arm64
           CIBW_ARCHS_WINDOWS: "AMD64 x86"
 
diff --git a/src/copapy/obj/crosscompile.sh b/src/copapy/obj/crosscompile.sh
index 984d19d..18d44ec 100644
--- a/src/copapy/obj/crosscompile.sh
+++ b/src/copapy/obj/crosscompile.sh
@@ -15,28 +15,29 @@ set -v
 python src/copapy/generate_stencils.py
 SRC=src/copapy/stencils.c
 DEST=src/copapy/obj
+OPT=O3
 mkdir -p $DEST
 
 # Native x86_64
-gcc-12 -c $SRC -o $DEST/stencils_x86_64.o
+gcc-12 -c $SRC -o $DEST/stencils_x86_64_$OPT.o
 
 # ARM64
-aarch64-linux-gnu-gcc-12 -O3 -c $SRC -o $DEST/stencils_aarch64.o
+aarch64-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_aarch64_$OPT.o
 
 # ARMv7
-arm-linux-gnueabihf-gcc-12 -O3 -c $SRC -o $DEST/stencils_armv7.o
+arm-linux-gnueabihf-gcc-12 -$OPT -c $SRC -o $DEST/stencils_armv7_$OPT.o
 
 # PowerPC64LE
-# powerpc64le-linux-gnu-gcc-12 -O3 -c $SRC -o $DEST/stencils_ppc64le.o
+# powerpc64le-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_ppc64le_$OPT.o
 
 # S390x
-# s390x-linux-gnu-gcc-12 -O3 -c $SRC -o $DEST/stencils_s390x.o
+# s390x-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_s390x_$OPT.o
 
 # Mips
-mips-linux-gnu-gcc-12 -O3 -c $SRC -o $DEST/stencils_mips.o
+mips-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_mips_$OPT.o
 
 # RISCV 32 Bit
-riscv64-linux-gnu-gcc-12 -O3 -march=rv32imac -mabi=ilp32 -c $SRC -o $DEST/stencils_riscv32.o
+riscv64-linux-gnu-gcc-12 -$OPT -march=rv32imac -mabi=ilp32 -c $SRC -o $DEST/stencils_riscv32_$OPT.o
 
 # RISCV 64 Bit
-riscv64-linux-gnu-gcc-12 -O3 -c $SRC -o $DEST/stencils_riscv64.o
\ No newline at end of file
+riscv64-linux-gnu-gcc-12 -$OPT -c $SRC -o $DEST/stencils_riscv64_$OPT.o
\ No newline at end of file