Fix broadcom GPU build error (#459)

* change the CI build on rpi3b build to use broadcom GPU
* disable -Wcast-qual for hello_fft

.github/platform_build

@@ -0,0 +1,34 @@
+#!/bin/bash -e
+
+platform="${1}"
+
+if [ -z "${platform}" ]; then
+    echo "Error: platform not set"
+    exit -1
+fi
+
+echo "running build for ${platform} on $(source /etc/os-release ; echo ${VERSION})"
+
+case "${platform}" in
+    rpi3b)
+        CMAKE_ARGS="-DPLATFORM=rpiv2 -DCMAKE_BUILD_TYPE=Release -DNFM=TRUE -DBUILD_UNITTESTS=TRUE"
+        ;;
+
+    *)
+        echo "Error: Platform '${platform}' not supported"
+        exit -1
+esac
+
+# make a build dir
+rm -rf build || true ; mkdir build
+cd build
+
+# configure and build
+cmake ${CMAKE_ARGS} ../
+make -j
+
+# run unit tests
+src/unittests
+
+# run rtl_airband to get version string and exit
+src/rtl_airband -v

.github/workflows/build.yml → .github/workflows/ci_build.yml

@@ -2,7 +2,7 @@ name: Run CI
 
 on:
   push:
-    branches: [main, unstable]
+    branches: [main]
     tags: ['v*']
   pull_request:
   workflow_dispatch:
@@ -13,7 +13,7 @@ jobs:
   ci_build:
     strategy:
       matrix:
-        os: [ ubuntu-22.04, macos-12, rpi3b, macos-13, ubuntu-20.04 ]
+        os: [ ubuntu-22.04, macos-12, macos-13, ubuntu-20.04 ]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 35 # runtime across all OSs, runs can get queued
     steps:

.github/workflows/platform_build.yml

@@ -0,0 +1,32 @@
+name: Run CI
+
+on:
+  push:
+    branches: [main]
+    tags: ['v*']
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    - cron: '39 13 * * *' # run daily 
+
+jobs:
+  platform_build:
+    strategy:
+      matrix:
+        os: [ rpi3b ]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 35 # runtime across all OSs, runs can get queued
+    steps:
+    - name: Runner Info
+      run: printenv | sort
+
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: '0' # need full history to get version from git tag
+
+    - name: Install packaged dependencies
+      run: .github/install_dependencies
+
+    - name: Configure Build and Test
+      run: .github/platform_build ${{ matrix.os }}

src/hello_fft/CMakeLists.txt

@@ -16,3 +16,6 @@ target_include_directories(hello_fft PUBLIC
 	"${CMAKE_CURRENT_BINARY_DIR}/.." # needed for config.h
 	${BCM_VC_INCLUDE_DIRS}
 )
+
+# disable -Wcast-qual for this folder
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-cast-qual")