From 09a27ff89060cfb08979f34a8c5fdfe4d1f79572 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Sat, 11 Feb 2023 03:53:43 +0000
Subject: [PATCH] net-analyzer/rrdtool: fix configure w/ clang 16

Signed-off-by: Sam James <sam@gentoo.org>
---
 .../rrdtool-1.8.0-configure-clang16.patch     | 34 +++++++++++++++++++
 ....8.0-r2.ebuild => rrdtool-1.8.0-r3.ebuild} |  1 +
 2 files changed, 35 insertions(+)
 create mode 100644 net-analyzer/rrdtool/files/rrdtool-1.8.0-configure-clang16.patch
 rename net-analyzer/rrdtool/{rrdtool-1.8.0-r2.ebuild => rrdtool-1.8.0-r3.ebuild} (99%)

diff --git a/net-analyzer/rrdtool/files/rrdtool-1.8.0-configure-clang16.patch b/net-analyzer/rrdtool/files/rrdtool-1.8.0-configure-clang16.patch
new file mode 100644
index 0000000000000..355436cb82f2c
--- /dev/null
+++ b/net-analyzer/rrdtool/files/rrdtool-1.8.0-configure-clang16.patch
@@ -0,0 +1,34 @@
+https://github.com/oetiker/rrdtool-1.x/commit/f3334fcbde0a77aa48938ba38602bff91c09cf85
+
+From f3334fcbde0a77aa48938ba38602bff91c09cf85 Mon Sep 17 00:00:00 2001
+From: Ryan Schmidt <git@ryandesign.com>
+Date: Sun, 20 Mar 2022 16:29:10 -0500
+Subject: [PATCH] acinclude.m4: Include <stdlib.h> when using exit
+
+Fixes:
+
+conftest.c:124:33: error: implicitly declaring library function 'exit'
+with type 'void (int) __attribute__((noreturn))'
+--- a/m4/acinclude.m4
++++ b/m4/acinclude.m4
+@@ -582,7 +582,8 @@ AC_DEFUN([GC_TIMEZONE], [
+         AC_REQUIRE([AC_STRUCT_TM])
+         AC_CACHE_CHECK([tm_gmtoff in struct tm], gq_cv_have_tm_gmtoff,
+                 gq_cv_have_tm_gmtoff=no
+-                AC_TRY_COMPILE([#include <time.h>
++                AC_TRY_COMPILE([#include <stdlib.h>
++                                #include <time.h>
+                                 #include <$ac_cv_struct_tm>
+                                 ],
+                                [struct tm t;
+@@ -595,7 +596,8 @@ AC_DEFUN([GC_TIMEZONE], [
+ 
+         AC_CACHE_CHECK([__tm_gmtoff in struct tm], gq_cv_have___tm_gmtoff,
+                 gq_cv_have___tm_gmtoff=no
+-                AC_TRY_COMPILE([#include <time.h>
++                AC_TRY_COMPILE([#include <stdlib.h>
++                                #include <time.h>
+                                 #include <$ac_cv_struct_tm>
+                                 ],
+                                [struct tm t;
+
diff --git a/net-analyzer/rrdtool/rrdtool-1.8.0-r2.ebuild b/net-analyzer/rrdtool/rrdtool-1.8.0-r3.ebuild
similarity index 99%
rename from net-analyzer/rrdtool/rrdtool-1.8.0-r2.ebuild
rename to net-analyzer/rrdtool/rrdtool-1.8.0-r3.ebuild
index 06f1d9e0cf3ba..57e9b04d676aa 100644
--- a/net-analyzer/rrdtool/rrdtool-1.8.0-r2.ebuild
+++ b/net-analyzer/rrdtool/rrdtool-1.8.0-r3.ebuild
@@ -74,6 +74,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-1.4.9-disable-rrd_graph-perl.patch
 	"${FILESDIR}"/${PN}-1.7.0-disable-rrd_graph-cgi.patch
 	"${FILESDIR}"/${PN}-1.7.1-configure.ac.patch
+	"${FILESDIR}"/${P}-configure-clang16.patch
 )
 
 pkg_setup() {