Support for building with clang

(cherry picked from commit 7ce0ef67864e58e40a1d7ac399e8228444bdbd3c)

dhcp.spec

@@ -3,7 +3,7 @@
 
 Name:      dhcp
 Version:   4.4.3
-Release:   6
+Release:   7
 Summary:   Dynamic host configuration protocol software
 #Please don't change the epoch on this package
 Epoch:     12
@@ -61,6 +61,7 @@ Patch42: backport-CVE-2022-2795.patch
 Patch43: backport-CVE-2022-38177.patch
 Patch44: backport-CVE-2022-38178.patch
 Patch45: IAID-is-output-has-hexe-if-it-contains-or.patch
+Patch46: support-for-building-with-clang.patch
 
 BuildRequires: gcc autoconf automake libtool openldap-devel krb5-devel libcap-ng-devel
 BuildRequires: systemd systemd-devel
@@ -309,6 +310,12 @@ exit 0
 %{_mandir}/man3/omapi.3.gz
 
 %changelog
+* Thu Mar 20 cf-zhao <zhaochuanfeng@huawei.com> - 12:4.4.3-7
+- Type:enhancement
+- ID:NA
+- SUG:build with clang
+- DESC:Support for building with clang
+
 * Sat Jan 20 2024 renmingshuai <renmingshuai@huawei.com> - 12:4.4.3-6
 - Type:bugfix
 - ID:

support-for-building-with-clang.patch

@@ -0,0 +1,29 @@
+From eb6f6bd959c2f496e4db1a90ea0629bbf9b12185 Mon Sep 17 00:00:00 2001
+From: cf-zhao <zhaochuanfeng@huawei.com>
+Date: Thu, 21 Mar 2024 13:04:26 +0800
+Subject: [PATCH] Support for building with clang
+
+---
+ client/dhclient.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/client/dhclient.c b/client/dhclient.c
+index 3e31dbf..a1f8849 100644
+--- a/client/dhclient.c
++++ b/client/dhclient.c
+@@ -48,7 +48,12 @@
+ /*
+  * Defined in stdio.h when _GNU_SOURCE is set, but we don't want to define
+  * that when building ISC code.
++ * When build with clang, there is also a macro defined in stdio2.h,
++ * undefine it so that we still use the prototype in stdio.h.
+  */
++#ifdef asprintf
++#undef asprintf
++#endif
+ extern int asprintf(char **strp, const char *fmt, ...);
+ 
+ TIME default_lease_time = 43200; /* 12 hours... */
+-- 
+2.33.0
+