configure: make zlib an optional dependency which input/stf depends on

[libsigrok.git] / README

diff --git a/README b/README
index 5ab36116c1b646843356def9eeffea0c0679030c..768c8ca2b6612d1850d69f8f25e95c830850aef7 100644 (file)
--- a/README
+++ b/README
@@ -37,6 +37,7 @@ Requirements for the C library:
  - libtool (only needed when building from git)
  - pkg-config >= 0.22
  - libglib >= 2.32.0
+ - zlib (optional, used for CRC32 calculation in STF input)
  - libzip >= 0.10
  - libtirpc (optional, used by VXI, fallback when glibc >= 2.26)
  - libserialport >= 0.1.1 (optional, used by some drivers)
@@ -152,7 +153,7 @@ Mailing list
 IRC
 ---
 
-You can find the sigrok developers in the #sigrok IRC channel on Freenode.
+You can find the sigrok developers in the #sigrok IRC channel on Libera.Chat.
 
 
 Website