try some workarounds

Author: dunglas

.github/workflows/docker.yaml

@@ -197,7 +197,7 @@ jobs:
         run: |
           docker run --platform=${{ matrix.platform }} --rm \
             "$(jq -r '."builder-${{ matrix.variant }}"."containerimage.config.digest"' <<< "${METADATA}")" \
-            sh -c 'go test -tags ${{ matrix.race }} -v ./... && cd caddy && go test -tags nobadger,nomysql,nopgx ${{ matrix.race }} -v ./...'
+            sh -c 'CGO_CFLAGS="-D_GNU_SOURCE" go test -tags ${{ matrix.race }} -v ./... && cd caddy && go test -tags nobadger,nomysql,nopgx ${{ matrix.race }} -v ./...'
         env:
           METADATA: ${{ steps.build.outputs.metadata }}
   # Adapted from https://docs.docker.com/build/ci/github-actions/multi-platform/

.github/workflows/tests.yaml

@@ -54,7 +54,7 @@ jobs:
         working-directory: internal/testcli/
         run: go build
       - name: Run library tests
-        run: go test -race -v ./...
+        run: CGO_CFLAGS="-D_GNU_SOURCE" go test -race -v ./...
       - name: Run Caddy module tests
         working-directory: caddy/
         run: go test -tags nobadger,nomysql,nopgx -race -v ./...

internal/testext/exttest.go

@@ -1,6 +1,14 @@
 package testext
 
-//#include "extension.h"
+// #cgo darwin pkg-config: libxml-2.0
+// #cgo CFLAGS: -Wall -Werror
+// #cgo CFLAGS: -I/usr/local/include -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib
+// #cgo linux CFLAGS: -D_GNU_SOURCE
+// #cgo darwin CFLAGS: -I/opt/homebrew/include
+// #cgo LDFLAGS: -L/usr/local/lib -L/usr/lib -lphp -lm -lutil
+// #cgo linux LDFLAGS: -ldl -lresolv
+// #cgo darwin LDFLAGS: -Wl,-rpath,/usr/local/lib -L/opt/homebrew/lib -L/opt/homebrew/opt/libiconv/lib -liconv -ldl
+// #include "extension.h"
 import "C"
 import (
 	"github.com/dunglas/frankenphp"