fftw: fix cmake module

srcpkgs/fftw/template

@@ -1,8 +1,8 @@
 # Template file for 'fftw'
 pkgname=fftw
 version=3.3.10
-revision=1
-hostmakedepends="libtool automake"
+revision=2
+hostmakedepends="libtool automake cmake"
 makedepends="libgomp-devel"
 short_desc="Library for computing the discrete Fourier transform (DFT)"
 maintainer="Orphaned <orphan@voidlinux.org>"
@@ -37,6 +37,18 @@ do_configure() {
 	mkdir ${wrksrc}/build-single
 	cd ${wrksrc}/build-single
 	../configure ${configure_args} ${CARGS} --enable-float ${_sse}
+
+	cd ${wrksrc}
+	# fix wrong soname in FFTW3LibraryDepends.cmake
+	vsed -e 's/3.6.9/3.6.10/' -i CMakeLists.txt
+
+	# create missing FFTW3LibraryDepends.cmake
+	cmake -B build -D CMAKE_INSTALL_PREFIX=/usr -D CMAKE_BUILD_TYPE=None \
+			-D ENABLE_OPENMP=ON -D ENABLE_THREADS=ON -D ENABLE_FLOAT=ON \
+			-D ENABLE_LONG_DOUBLE=ON -D ENABLE_QUAD_PRECISION=ON -D ENABLE_SSE=ON \
+			-D ENABLE_SSE2=ON -D ENABLE_AVX=ON -D ENABLE_AVX2=ON
+	# fix broken IMPORTED_LOCATION: https://github.com/FFTW/fftw3/issues/130#issuecomment-1030280157
+	sed -e 's|\(IMPORTED_LOCATION_NONE\).*|\1 "/usr/lib/libfftw3.so.3"|' -i build/FFTW3LibraryDepends.cmake
 }
 
 do_build() {
@@ -58,6 +70,7 @@ do_install() {
 		cd ${wrksrc}/build-${f}
 		make DESTDIR=${DESTDIR} install
 	done
+	vinstall ${wrksrc}/build/FFTW3LibraryDepends.cmake 644 usr/lib/cmake/fftw3/
 }
 
 libfftw_package() {