testing/firejail: don't override our CFLAGS

testing/firejail/APKBUILD

@@ -3,7 +3,7 @@
 pkgname=firejail
 pkgver=0.9.42_rc1
 _pkgver=${pkgver//_/-}
-pkgrel=0
+pkgrel=1
 pkgdesc="Linux namespaces and seccomp-bpf sandbox"
 url="https://firejail.wordpress.com/"
 arch="all !armhf"
@@ -17,6 +17,13 @@ subpackages="$pkgname-doc $pkgname-bash-completion:bashcomp"
 source="$pkgname-$pkgver.tar.gz::https://github.com/netblue30/$pkgname/archive/$_pkgver.tar.gz"
 
 builddir="$srcdir"/$pkgname-$_pkgver
+prepare() {
+	default_prepare || return 1
+	find "$builddir" -name Makefile.in -exec sed -i -r \
+		-e '/CFLAGS/s: (-O2|-ggdb) : :g' \
+		-e '1iCC=@CC@' {} + || die
+}
+
 build() {
 	cd "$builddir"
 	./configure \