gnuradio-nrsc5: add gmpxx-devel to makedepends

Also fix cross building the patched fdkaac lib.

srcpkgs/gnuradio-nrsc5/template

@@ -4,9 +4,9 @@ version=1.0.0
 revision=3
 wrksrc="gr-nrsc5-${version}"
 build_style=cmake
-hostmakedepends="git autoconf automake libtool swig pkg-config"
+hostmakedepends="git automake libtool pkg-config gnuradio swig"
 makedepends="gnuradio-devel boost-devel libcppunit-devel python3-devel
- log4cpp-devel mpir-devel gsl-devel volk-devel"
+ log4cpp-devel gmpxx-devel mpir-devel gsl-devel volk-devel"
 short_desc="GNU Radio implementation of HD Radio"
 maintainer="Remi Pommarel <repk@triplefau.lt>"
 license="GPL-3.0-or-later"
@@ -14,6 +14,13 @@ homepage="https://github.com/argilo/gr-nrsc5/"
 distfiles="https://github.com/argilo/gr-nrsc5/archive/v${version}.tar.gz"
 checksum=d736c4cb1104254d07296d2a61880e07149c9bfd1a49aed504215672d4e09485
 
+pre_configure() {
+	if [ "$CROSS_BUILD" ]; then
+		vsed -i CMakeLists.txt \
+			-e "s;\./configure ;& --host=${XBPS_MACHINE} ;"
+	fi
+}
+
 gnuradio-nrsc5-devel_package() {
 	depends="${makedepends} ${sourcepkg}-${version}_${revision}"
 	short_desc+=" - development files"