Fix invalid NEON instructions for armv6 Raspberry Pi's (#49)

* add march

* use cpu model without vfp

* disable boringssl neon

* use different method to disable neon

* disable arm cpu test when OPENSSL_STATIC_ARMCAP is defined

* tweak patch format

* disable test

* let macos use gpatch

* try disable asm again

* disable asm at cmake level

* reverse logic

* try soft float

* target even older arm chip

* try generic cpu model

* Revert "try generic cpu model"

This reverts commit 4892cdd.

* use cpu model without float

* manually tweak cpu features

* Only use mcpu

* Disable loop vectorization

* disable more vectorization

* try different vfp

* try another vector disable flag

* use latest zig snapshot

* more vectorize flags

* refactor to pass flags directly to zig

* Revert "use latest zig snapshot"

This reverts commit 2ad7947.

* try restoring original asm behavior

.github/workflows/build-and-test-make.yml

@@ -24,32 +24,27 @@ jobs:
       CC: ${{ github.workspace }}/zigshim/cc
       CXX: ${{ github.workspace }}/zigshim/cxx
       AR: ${{ github.workspace }}/zigshim/ar
-      ZIG_TARGET: ${{ matrix.target }}
-      CFLAGS: ${{ matrix.cflags }}
+      ZIG_FLAGS: ${{ matrix.zigflags }}
     strategy:
       fail-fast: false
       matrix:
         include:
           - arch: x86_64
-            target: x86_64-linux-gnu.2.17
             host: x86_64-linux-gnu
             capture_interface: eth0
-            cflags:
+            zigflags: -target x86_64-linux-gnu.2.17
           - arch: i386
-            target: x86-linux-gnu.2.17
             host: i386-linux-gnu
             capture_interface: eth0
-            cflags:
+            zigflags: -target x86-linux-gnu.2.17
           - arch: aarch64
-            target: aarch64-linux-gnu.2.17
             host: aarch64-linux-gnu
             capture_interface: eth0
-            cflags:
+            zigflags: -target aarch64-linux-gnu.2.17
           - arch: arm
-            target: arm-linux-gnueabihf.2.17
             host: arm-linux-gnueabihf
             capture_interface: eth0
-            cflags: "-mfpu=vfp -mfloat-abi=hard -mcpu=arm1176jzf_s"
+            zigflags: -target arm-linux-gnueabihf.2.17 -mcpu=arm1176jzf_s
     steps:
       - name: Check out the repo
         uses: actions/checkout@v2
@@ -246,7 +241,7 @@ jobs:
 
       - name: Install macOS dependencies
         run: |
-          brew install pkg-config make cmake ninja autoconf automake libtool
+          brew install pkg-config make cmake ninja autoconf automake libtool gpatch
           # Chrome version dependencies, install only not installed.
           which go || brew install go
           # Needed to compile 'minicurl'

zigshim/cc

@@ -1,2 +1,2 @@
 #!/bin/bash
-zig cc -target $ZIG_TARGET "$@"
+zig cc $ZIG_FLAGS "$@"

zigshim/cxx

@@ -1,2 +1,2 @@
 #!/bin/bash
-zig c++ -target $ZIG_TARGET "$@"
+zig c++ $ZIG_FLAGS "$@"