portable build

Author: phearnot

.github/workflows/publish.yml

@@ -38,15 +38,15 @@ jobs:
           - platform: linux
             os: ubuntu-22.04
             extra-packages: gcc-9 g++-9
-            cmd: CC=gcc-9 CXX=g++-9 ./build.sh
+            cmd: CC=gcc-9 CXX=g++-9 ./build.sh -D__BLST_PORTABLE__
           - platform: linux
             arch: aarch64
             extra-packages: gcc-9-aarch64-linux-gnu g++-9-aarch64-linux-gnu
-            cmd: CC=aarch64-linux-gnu-gcc-9 CXX=aarch64-linux-gnu-g++-9 ./build.sh && mv supranational/blst/Linux/{amd64,aarch64}
+            cmd: CC=aarch64-linux-gnu-gcc-9 CXX=aarch64-linux-gnu-g++-9 ./build.sh -D__BLST_PORTABLE__ && mv supranational/blst/Linux/{amd64,aarch64}
           - platform: linux
             arch: x86
             extra-packages: gcc-9-multilib g++-9-multilib
-            cmd: CC='gcc-9 -m32' CXX='g++-9 -m32' ./build.sh && mv supranational/blst/Linux/{amd64,x86}
+            cmd: CC='gcc-9 -m32' CXX='g++-9 -m32' ./build.sh -D__BLST_PORTABLE__ && mv supranational/blst/Linux/{amd64,x86}
           - platform: win32
             os: windows-2022
             cmd: |