From d7d59de2f79e0ce06043f56c29d0202569b88e62 Mon Sep 17 00:00:00 2001
From: Augustin Cavalier <waddlesplash@gmail.com>
Date: Tue, 15 Jul 2014 10:39:30 -0400
Subject: Add minimal Haiku support; based on Adrien's patch.


diff --git a/configure.py b/configure.py
index 2eacbfe..97919db 100755
--- a/configure.py
+++ b/configure.py
@@ -55,13 +55,15 @@ class Platform(object):
             self._platform = 'msvc'
         elif self._platform.startswith('bitrig'):
             self._platform = 'bitrig'
+        elif self._platform.startswith('haiku'):
+            self._platform = 'haiku'
         elif self._platform.startswith('netbsd'):
             self._platform = 'netbsd'
 
     @staticmethod
     def known_platforms():
       return ['linux', 'darwin', 'freebsd', 'openbsd', 'solaris', 'sunos5',
-              'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd']
+              'mingw', 'msvc', 'gnukfreebsd', 'bitrig', 'netbsd', 'haiku']
 
     def platform(self):
         return self._platform
@@ -88,6 +90,9 @@ class Platform(object):
     def is_solaris(self):
         return self._platform == 'solaris'
 
+    def is_haiku(self):
+        return self._platform == 'is_haiku'
+
     def uses_usr_local(self):
         return self._platform in ('freebsd', 'openbsd', 'bitrig')
 
@@ -427,11 +432,7 @@ if platform.supports_ninja_browse():
 
 n.comment('the depfile parser and ninja lexers are generated using re2c.')
 def has_re2c():
-    try:
-        proc = subprocess.Popen(['re2c', '-V'], stdout=subprocess.PIPE)
-        return int(proc.communicate()[0], 10) >= 1103
-    except OSError:
-        return False
+    return False
 if has_re2c():
     n.rule('re2c',
            command='re2c -b -i --no-generation-date -o $out $in',
diff --git a/src/util.cc b/src/util.cc
index aa47f2f..3308025 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -507,7 +507,7 @@ int GetProcessorCount() {
 #endif
 }
 
-#if defined(_WIN32) || defined(__CYGWIN__)
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(__HAIKU__)
 static double CalculateProcessorLoad(uint64_t idle_ticks, uint64_t total_ticks)
 {
   static uint64_t previous_idle_ticks = 0;
-- 
2.11.0


From 364a8621f81fdab928ea41791463ed66787b7e4f Mon Sep 17 00:00:00 2001
From: Michael Lotz <mmlr@mlotz.ch>
Date: Sat, 19 Dec 2015 23:30:47 +0000
Subject: Add include of sys/select.h to get FD_* definitions.

Apparently these are pulled in by one of the already present headers
on other platforms. A cursory look at the POSIX specs did not reveal
a requirement to expose these types with the given headers though.

diff --git a/src/subprocess-posix.cc b/src/subprocess-posix.cc
index f3baec2..6b27d7e 100644
--- a/src/subprocess-posix.cc
+++ b/src/subprocess-posix.cc
@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <string.h>
+#include <sys/select.h>
 #include <sys/wait.h>
 
 #include "util.h"
-- 
2.11.0


From 5ec9e60993a9c93634371aa06fcae454fa364ce6 Mon Sep 17 00:00:00 2001
From: Jerome Duval <jerome.duval@gmail.com>
Date: Sun, 16 Apr 2017 13:39:04 +0200
Subject: GetLoadAvg to be implemented for Haiku


diff --git a/src/util.cc b/src/util.cc
index 3308025..bc9739c 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -507,7 +507,7 @@ int GetProcessorCount() {
 #endif
 }
 
-#if defined(_WIN32) || defined(__CYGWIN__) || defined(__HAIKU__)
+#if defined(_WIN32) || defined(__CYGWIN__)
 static double CalculateProcessorLoad(uint64_t idle_ticks, uint64_t total_ticks)
 {
   static uint64_t previous_idle_ticks = 0;
@@ -573,6 +573,10 @@ double GetLoadAverage() {
 
   return posix_compatible_load;
 }
+#elif defined(__HAIKU__)
+double GetLoadAverage() {
+    return -0.0f;
+}
 #else
 double GetLoadAverage() {
   double loadavg[3] = { 0.0f, 0.0f, 0.0f };
-- 
2.11.0