Add FreeBSD CI test

.github/workflows/freebsd.yml

@@ -0,0 +1,38 @@
+name: Test
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: A job to run test in FreeBSD
+    env:
+      MYTOKEN : "lala"
+      MYTOKEN2: "value2"
+    steps:
+    - uses: actions/checkout@v4
+    - name: Test in FreeBSD
+      id: test
+      uses: vmactions/freebsd-vm@v1
+      with:
+        envs: 'MYTOKEN MYTOKEN2'
+        usesh: true
+        prepare: |
+          set -x
+          pkg install -y curl mbedtls automake fltk
+
+        run: |
+          set -x
+          pwd
+          ls -lah
+          whoami
+          env
+          freebsd-version
+          ls -l /usr/local
+          ls -l /usr/local/include
+          ./autogen.sh
+          ./configure
+          cat config.log
+          make
+          make check
+          make distcheck

configure.ac

@@ -76,8 +76,8 @@ dnl (this is somewhat a religious problem)
 dnl --------------------------------------
 dnl
 if test "`$CPP -v < /dev/null 2>&1 | grep '/usr/local/include' 2>&1`" = ""; then
-  CPPFLAGS="$CPPFLAGS -I/usr/local/include"
-  LDFLAGS="$LDFLAGS -L/usr/local/lib"
+  AX_CPPFLAGS="$AX_CPPFLAGS -I/usr/local/include"
+  AX_LDFLAGS="$AX_LDFLAGS -L/usr/local/lib"
 fi
 
 dnl ------------------------------------