+## Bernstein's `ChaCha' stream cipher.
+pkginclude_HEADERS += chacha.h chacha-core.h
+libsymm_la_SOURCES += chacha.c
+if CPUFAM_X86
+libsymm_la_SOURCES += chacha-x86ish-sse2.S
+endif
+if CPUFAM_AMD64
+libsymm_la_SOURCES += chacha-x86ish-sse2.S
+endif
+TESTS += chacha.t$(EXEEXT)
+EXTRA_DIST += t/chacha
+ALL_CIPHERS += chacha20 chacha12 chacha8
+ALL_CIPHERS += xchacha20 xchacha12 xchacha8
+STUBS_HDR += ChaCha20,chacha20,chacha
+STUBS_HDR += ChaCha12,chacha12,chacha
+STUBS_HDR += ChaCha8,chacha8,chacha
+STUBS_HDR += XChaCha20,xchacha20,chacha
+STUBS_HDR += XChaCha12,xchacha12,chacha
+STUBS_HDR += XChaCha8,xchacha8,chacha
+