5 files changed, 25 insertions, 0 deletions
diff --git a/src/os/unix/ngx_darwin_config.h b/src/os/unix/ngx_darwin_config.h
index 39009768f..88aa6f502 100644
--- a/src/os/unix/ngx_darwin_config.h
+++ b/src/os/unix/ngx_darwin_config.h
@@ -56,6 +56,11 @@
 #include <ngx_auto_config.h>
 
 
+#if (NGX_HAVE_POSIX_SEM)
+#include <semaphore.h>
+#endif
+
+
 #if (NGX_HAVE_POLL)
 #include <poll.h>
 #endif
diff --git a/src/os/unix/ngx_freebsd_config.h b/src/os/unix/ngx_freebsd_config.h
index 20cb66640..ec7a375a8 100644
--- a/src/os/unix/ngx_freebsd_config.h
+++ b/src/os/unix/ngx_freebsd_config.h
@@ -68,6 +68,11 @@
 #include <ngx_auto_config.h>
 
 
+#if (NGX_HAVE_POSIX_SEM)
+#include <semaphore.h>
+#endif
+
+
 #if (NGX_HAVE_POLL)
 #include <poll.h>
 #endif
diff --git a/src/os/unix/ngx_linux_config.h b/src/os/unix/ngx_linux_config.h
index cf45e54a1..046095d1d 100644
--- a/src/os/unix/ngx_linux_config.h
+++ b/src/os/unix/ngx_linux_config.h
@@ -58,6 +58,11 @@
 #include <ngx_auto_config.h>
 
 
+#if (NGX_HAVE_POSIX_SEM)
+#include <semaphore.h>
+#endif
+
+
 #if (NGX_HAVE_SYS_PRCTL_H)
 #include <sys/prctl.h>
 #endif
diff --git a/src/os/unix/ngx_posix_config.h b/src/os/unix/ngx_posix_config.h
index 86a80d701..aec8a0a35 100644
--- a/src/os/unix/ngx_posix_config.h
+++ b/src/os/unix/ngx_posix_config.h
@@ -96,6 +96,11 @@
 #include <ngx_auto_config.h>
 
 
+#if (NGX_HAVE_POSIX_SEM)
+#include <semaphore.h>
+#endif
+
+
 #if (NGX_HAVE_POLL)
 #include <poll.h>
 #endif
diff --git a/src/os/unix/ngx_solaris_config.h b/src/os/unix/ngx_solaris_config.h
index ae8212d8a..6b3d42eaa 100644
--- a/src/os/unix/ngx_solaris_config.h
+++ b/src/os/unix/ngx_solaris_config.h
@@ -57,6 +57,11 @@
 #include <ngx_auto_config.h>
 
 
+#if (NGX_HAVE_POSIX_SEM)
+#include <semaphore.h>
+#endif
+
+
 #if (NGX_HAVE_POLL)
 #include <poll.h>
 #endif