From 2f060c5f23b849ca82571a823d3be71f42899aff Mon Sep 17 00:00:00 2001
From: stenn <stenn@ntp.org>
Date: Sun, 14 May 2017 06:22:11 -0400
Subject: [PATCH] Provide Makefile variables LIBEVENT_{CFLAGS,CPPFLAGS,LDFLAGS}

This will allow a parent package to specify compiler, CPP, and linker
flags to a libevent built as a sub-package.

Picked-from: #506
Closes: #506
(cherry picked from commit 1a448088e3aef5b6baf161eb0f6d17e18a77313c)
---
 Makefile.am | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 0c07d77e..9ec7ca2e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -228,7 +228,11 @@ NO_UNDEFINED =
 MAYBE_CORE =
 endif
 
-GENERIC_LDFLAGS = -version-info $(VERSION_INFO) $(RELEASE) $(NO_UNDEFINED)
+AM_CFLAGS = $(LIBEVENT_CFLAGS)
+AM_CPPFLAGS = -I$(srcdir)/compat -I$(srcdir)/include -I./include $(SYS_INCLUDES) $(LIBEVENT_CPPFLAGS)
+AM_LDFLAGS = $(LIBEVENT_LDFLAGS)
+
+GENERIC_LDFLAGS = -version-info $(VERSION_INFO) $(RELEASE) $(NO_UNDEFINED) $(AM_LDFLAGS)
 
 libevent_la_SOURCES = $(CORE_SRC) $(EXTRAS_SRC)
 libevent_la_LIBADD = @LTLIBOBJS@ $(SYS_LIBS)
@@ -299,8 +303,6 @@ else
 noinst_HEADERS += $(EVENT1_HDRS)
 endif
 
-AM_CPPFLAGS = -I$(srcdir)/compat -I$(srcdir)/include -I./include $(SYS_INCLUDES)
-
 verify: check
 
 doxygen: FORCE