AVX code uses _mm256_setr_m128i() which requires gcc 8
--- pipewire-0.3.2/meson.build.orig	2020-03-26 12:34:54.000000000 +0100
+++ pipewire-0.3.2/meson.build	2020-04-26 08:53:23.909636872 +0200
@@ -77,7 +77,7 @@
 have_ssse3 = cc.has_argument(ssse3_args)
 have_sse41 = cc.has_argument(sse41_args)
 have_fma = cc.has_argument(fma_args)
-have_avx = cc.has_argument(avx_args)
-have_avx2 = cc.has_argument(avx2_args)
+have_avx = cc.has_argument(avx_args) and not ((cc.get_id() == 'gcc') and cc.version().version_compare('< 8'))
+have_avx2 = cc.has_argument(avx2_args) and not ((cc.get_id() == 'gcc') and cc.version().version_compare('< 8'))
 
 cdata = configuration_data()