From 22588250baa1bfa5c00f57d39329d0c144fc8112 Mon Sep 17 00:00:00 2001

From: Florian Festi <ffesti@redhat.com>

Date: Thu, 2 Jun 2016 15:54:01 +0200

Subject: [PATCH] Add support for _buildhost macro for setting the build host

 manually.

This is useful for reproducible builds. See rhbz#1309367.

---

 build/pack.c | 25 +++++++++++++++++--------

 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/build/pack.c b/build/pack.c

index f9fb3a0..82c1262 100644

--- a/build/pack.c

+++ b/build/pack.c

@@ -179,16 +179,25 @@ static const char * buildHost(void)

     static char hostname[1024];

     static int oneshot = 0;

     struct hostent *hbn;

+    char *bhMacro;

     if (! oneshot) {

-        (void) gethostname(hostname, sizeof(hostname));

-	hbn = gethostbyname(hostname);

-	if (hbn)

-	    strcpy(hostname, hbn->h_name);

-	else

-	    rpmlog(RPMLOG_WARNING,

-			_("Could not canonicalize hostname: %s\n"), hostname);

-	oneshot = 1;

+        bhMacro = rpmExpand("%{?_buildhost}", NULL);

+        if (strcmp(bhMacro, "") != 0 && strlen(bhMacro) < 1024) {

+            strcpy(hostname, bhMacro);

+        } else {

+            if (strcmp(bhMacro, "") != 0)

+                rpmlog(RPMLOG_WARNING, _("The _buildhost macro is too long\n"));

+            (void) gethostname(hostname, sizeof(hostname));

+            hbn = gethostbyname(hostname);

+            if (hbn)

+                strcpy(hostname, hbn->h_name);

+            else

+                rpmlog(RPMLOG_WARNING,

+                        _("Could not canonicalize hostname: %s\n"), hostname);

+        }

+        free(bhMacro);

+        oneshot = 1;

     }

     return(hostname);

 }

-- 

2.5.5