Add comments to README about compiler and library dependencies.

[openocd] / README

diff --git a/README b/README
index 07aaf9a4967df6f12078686ca032b063ee0c0408..5fc9655881b125c6f8b1490fd00421219502b82f 100644 (file)
--- a/README
+++ b/README
@@ -128,7 +128,14 @@ those looking for a quick-install
 OpenOCD Dependencies
 --------------------
 
-You will need to install the appropriate driver files, if you want to
+Presently, GCC is required to build OpenOCD.  The developers have begun
+to enforce strict code warnings (-Wall, -Werror, -Wextra, and more) and
+use C99-specific features: inline functions, named initializers, mixing
+declarations with code, and other tricks.  While it may be possible to
+use other compilers, they must be somewhat modern and could require
+extending support to conditionally remove GCC-specific extensions.
+
+Also, you need to install the appropriate driver files, if you want to
 build support for a USB or FTDI-based interface:
 
 - ft2232, jlink, rlink, vsllink, usbprog, arm-jtag-ew:
@@ -139,6 +146,9 @@ build support for a USB or FTDI-based interface:
     or the Amontec version (from @uref{http://www.amontec.com}), for
     easier support of JTAGkey's vendor and product IDs.
 
+Many Linux distributions provide these packages through their automated
+installation and update mechanisms.
+
 Compiling OpenOCD
 -----------------