[Buildroot] [PATCH 1/2] apache: add customization of MPM

[Fabrice Fontaine]

MPM can be selected between event, prefork or worker
Set worker as the default one as it was before even if event MPM is
better on system supporting thread safe polling

Signed-off-by: Fabrice Fontaine <fabrice.fontaine at orange.com>
---
 package/apache/Config.in | 40 ++++++++++++++++++++++++++++++++++++++++
 package/apache/apache.mk | 14 +++++++++++++-
 2 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/package/apache/Config.in b/package/apache/Config.in
index 0814a17..3b25988 100644
--- a/package/apache/Config.in
+++ b/package/apache/Config.in
@@ -14,6 +14,46 @@ config BR2_PACKAGE_APACHE
 
 	  http://httpd.apache.org
 
+if BR2_PACKAGE_APACHE
+
+config BR2_PACKAGE_APACHE_EVENT
+	bool
+
+config BR2_PACKAGE_APACHE_PREFORK
+	bool
+
+config BR2_PACKAGE_APACHE_WORKER
+	bool
+
+choice
+	prompt "Multi-Processing Module (MPM)"
+	default BR2_PACKAGE_APACHE_MPM_WORKER
+	help
+	  Select the Multi-Processing Module (MPM).
+
+config BR2_PACKAGE_APACHE_MPM_EVENT
+	bool "event"
+	select BR2_PACKAGE_APACHE_EVENT
+	help
+	  A variant of the worker MPM with the goal of consuming threads
+	  only for connections with active processing
+
+config BR2_PACKAGE_APACHE_MPM_PREFORK
+	bool "prefork"
+	select BR2_PACKAGE_APACHE_PREFORK
+	help
+	  Implements a non-threaded, pre-forking web server
+
+config BR2_PACKAGE_APACHE_MPM_WORKER
+	bool "worker"
+	select BR2_PACKAGE_APACHE_WORKER
+	help
+	  Implements a hybrid multi-threaded multi-process web server
+
+endchoice
+
+endif
+
 comment "apache needs a toolchain w/ dynamic library, threads"
 	depends on BR2_USE_MMU
 	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS
diff --git a/package/apache/apache.mk b/package/apache/apache.mk
index e78545a..a3f49a1 100644
--- a/package/apache/apache.mk
+++ b/package/apache/apache.mk
@@ -20,6 +20,18 @@ APACHE_CONF_ENV= \
 	ap_cv_void_ptr_lt_long=no \
 	PCRE_CONFIG=$(STAGING_DIR)/usr/bin/pcre-config
 
+ifeq ($(BR2_PACKAGE_APACHE_EVENT),y)
+APACHE_MPM = "event"
+endif
+
+ifeq ($(BR2_PACKAGE_APACHE_PREFORK),y)
+APACHE_MPM = "prefork"
+endif
+
+ifeq ($(BR2_PACKAGE_APACHE_WORKER),y)
+APACHE_MPM = "worker"
+endif
+
 APACHE_CONF_OPTS = \
 	--sysconfdir=/etc/apache2 \
 	--with-apr=$(STAGING_DIR)/usr \
@@ -31,7 +43,7 @@ APACHE_CONF_OPTS = \
 	--enable-mime-magic \
 	--without-suexec-bin \
 	--enable-mods-shared=all \
-	--with-mpm=worker \
+	--with-mpm=$(APACHE_MPM) \
 	--disable-lua \
 	--disable-luajit
 
-- 
2.5.0