asterisk-15.x: remove build timestamp

Build timestamps prevent reproducible builds [0].
Thanks to debian for the patch

[0] https://reproducible-builds.org/docs/timestamps/

Signed-off-by: Alexander Couzens <lynxis@fe80.eu>

net/asterisk-15.x/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=asterisk15
 PKG_VERSION:=15.1.3
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=asterisk-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.asterisk.org/pub/telephony/asterisk/releases

net/asterisk-15.x/patches/100-build-reproducibly.patch

@@ -0,0 +1,28 @@
+--- a/build_tools/make_build_h
++++ b/build_tools/make_build_h
+@@ -5,6 +5,14 @@
+ OS=`uname -s`
+ USER=`id | awk -F")" '{print $1}'| awk -F"(" '{print $2}' | sed 's/\\\\/\\\\\\\\/g'`
+ DATE=`date -u "+%Y-%m-%d %H:%M:%S"`
++if [ -n "${SOURCE_DATE_EPOCH}" ]; then
++	# building reproducibly, faking some data
++	HOSTNAME='buildd.debian.org'
++	KERNEL='unknown'
++	MACHINE='unknown'
++	USER='nobody'
++	DATE=`date -u "+%Y-%m-%d %H:%M:%S" -d @${SOURCE_DATE_EPOCH}`
++fi
+ cat << END
+ /*
+  * build.h
+--- a/Makefile
++++ b/Makefile
+@@ -465,7 +465,7 @@
+ 	@echo "<docs xmlns:xi=\"http://www.w3.org/2001/XInclude\">" >> $@
+ 	@for x in $(MOD_SUBDIRS); do \
+ 		printf "$$x " ; \
+-		for i in `find $$x -name '*.c'`; do \
++		for i in `find $$x -name '*.c' | LC_ALL=C sort`; do \
+ 			$(AWK) -f build_tools/get_documentation $$i >> $@ ; \
+ 		done ; \
+ 	done