From 48dc5f853aeb553348dfbdb1479414857d9e66b9 Mon Sep 17 00:00:00 2001
From: David Roundy <roundyd@physics.oregonstate.edu>
Date: Sat, 28 Feb 2015 13:11:58 -0800
Subject: [PATCH] only use sendfile on linux

---
 Makefile    | 2 +-
 new-build.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 22d134c..5c20369 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ targets.o : lib/iterablehash.h lib/listset.h lib/sha1.h fac.h targets.c
 clean.o : lib/iterablehash.h lib/listset.h lib/sha1.h fac.h clean.c
 	gcc -std=c11 -c clean.c
 
-new-build.o : lib/hashset.h environ.h lib/listset.h lib/bigbrother.h lib/sha1.h lib/iterablehash.h fac.h new-build.c new-build.h
+new-build.o : lib/hashset.h environ.h lib/iterablehash.h lib/listset.h lib/bigbrother.h lib/sha1.h fac.h new-build.c new-build.h
 	gcc -std=c11 -c new-build.c
 
 git.o : lib/iterablehash.h lib/listset.h lib/sha1.h fac.h git.c
diff --git a/new-build.c b/new-build.c
index e23c1b9..92f7516 100644
--- a/new-build.c
+++ b/new-build.c
@@ -11,7 +11,11 @@
 #include <sys/stat.h>
 #include <sys/wait.h>
 #include <sys/time.h>
+
+#ifdef __linux__
 #include <sys/sendfile.h>
+#endif
+
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -516,7 +520,9 @@ static void build_marked(struct all_targets *all, const char *log_directory) {
           if (bs[i]->all_done != built || show_output) {
             off_t stdoutlen = lseek(bs[i]->stdouterrfd, 0, SEEK_END);
             off_t myoffset = 0;
+#ifdef __linux__
             sendfile(1, bs[i]->stdouterrfd, &myoffset, stdoutlen);
+#endif
           }
           if (bs[i]->all_done != built && bs[i]->all_done != failed) {
             printf("INTERRUPTED!  bs[i]->all_done == %s\n",