From f4fe90ea6db587096e1b56981619b93bc6fb4dbe Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Fri, 22 Nov 2019 19:00:56 +0300
Subject: [PATCH] C fn definitions on Linux

---
 vlib/builtin/cfns.v              | 2 ++
 vlib/clipboard/clipboard_linux.v | 1 +
 vlib/os/os.v                     | 7 +++++--
 vlib/readline/readline_linux.v   | 7 ++++++-
 4 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/vlib/builtin/cfns.v b/vlib/builtin/cfns.v
index 862a7d1470..570bc21038 100644
--- a/vlib/builtin/cfns.v
+++ b/vlib/builtin/cfns.v
@@ -85,6 +85,8 @@ fn C.DEFAULT_LT() bool
 fn C.DEFAULT_GE() bool
 fn C.isatty() int
 
+fn C.syscall() int
+
 
 
 
diff --git a/vlib/clipboard/clipboard_linux.v b/vlib/clipboard/clipboard_linux.v
index 0f6e2bef57..fa91e1bb53 100644
--- a/vlib/clipboard/clipboard_linux.v
+++ b/vlib/clipboard/clipboard_linux.v
@@ -15,6 +15,7 @@ import (
 struct C.Display
 struct C.Atom
 struct C.Window
+fn C.XFree()
 fn C.XInitThreads() int
 fn C.XCloseDisplay(d &Display)
 fn C.XFlush(d &Display)
diff --git a/vlib/os/os.v b/vlib/os/os.v
index 546dd798a5..2e12419f6f 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -752,12 +752,15 @@ fn on_segfault(f voidptr) {
 
 fn C.getpid() int
 fn C.proc_pidpath (int, byteptr, int) int
+fn C.readlink() int
 
-// executable return the path name of the executable that started the current process.
+
+// executable returns the path name of the executable that started the current
+// process.
 pub fn executable() string {
 	$if linux {
 		mut result := malloc(MAX_PATH)
-		count := int(C.readlink('/proc/self/exe', result, MAX_PATH ))
+		count := C.readlink('/proc/self/exe', result, MAX_PATH)
 		if count < 0 {
 			panic('error reading /proc/self/exe to get exe path')
 		}
diff --git a/vlib/readline/readline_linux.v b/vlib/readline/readline_linux.v
index 759df0cf04..161708199f 100644
--- a/vlib/readline/readline_linux.v
+++ b/vlib/readline/readline_linux.v
@@ -34,10 +34,15 @@ enum Action {
   suspend
 }
 
+fn C.tcgetattr() int
+fn C.tcsetattr() int
+fn C.ioctl() int
+fn C.raise()
+
 // Toggle raw mode of the terminal by changing its attributes
 // Catches SIGUSER (CTRL+C) Signal to reset tty
 fn (r mut Readline) enable_raw_mode() {
-  if ( C.tcgetattr(0, &r.orig_termios) == -1 ) {
+  if C.tcgetattr(0, &r.orig_termios) == -1 {
     r.is_tty = false
     r.is_raw = false
     return