diff --git a/easybuild/easyconfigs/f/FFTW/FFTW-3.3.10-GCC-13.3.0.eb b/easybuild/easyconfigs/f/FFTW/FFTW-3.3.10-GCC-13.3.0.eb
new file mode 100644
index 00000000000..bf18544e701
--- /dev/null
+++ b/easybuild/easyconfigs/f/FFTW/FFTW-3.3.10-GCC-13.3.0.eb
@@ -0,0 +1,17 @@
+name = 'FFTW'
+version = '3.3.10'
+
+homepage = 'https://www.fftw.org'
+description = """FFTW is a C subroutine library for computing the discrete Fourier transform (DFT)
+in one or more dimensions, of arbitrary input size, and of both real and complex data."""
+
+toolchain = {'name': 'GCC', 'version': '13.3.0'}
+toolchainopts = {'pic': True}
+
+source_urls = [homepage]
+sources = [SOURCELOWER_TAR_GZ]
+checksums = ['56c932549852cddcfafdab3820b0200c7742675be92179e59e6215b340e26467']
+
+runtest = 'check'
+
+moduleclass = 'numlib'
diff --git a/easybuild/easyconfigs/g/gfbf/gfbf-2024.05.eb b/easybuild/easyconfigs/g/gfbf/gfbf-2024.05.eb
new file mode 100644
index 00000000000..f0c1233309a
--- /dev/null
+++ b/easybuild/easyconfigs/g/gfbf/gfbf-2024.05.eb
@@ -0,0 +1,20 @@
+easyblock = 'Toolchain'
+
+name = 'gfbf'
+version = '2024.05'
+
+homepage = '(none)'
+description = """GNU Compiler Collection (GCC) based compiler toolchain, including
+ FlexiBLAS (BLAS and LAPACK support) and (serial) FFTW."""
+
+toolchain = SYSTEM
+
+local_gccver = '13.3.0'
+
+dependencies = [
+    ('GCC', local_gccver),
+    ('FlexiBLAS', '3.4.4', '', ('GCC', local_gccver)),
+    ('FFTW', '3.3.10', '', ('GCC', local_gccver)),
+]
+
+moduleclass = 'toolchain'