From efbae17abe758123c683511216f87d5e2c36218a Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 13 May 2019 10:48:09 +0200
Subject: core/pacman: add patches for automatically changing "i686" to
 "pentium4" if "Architecture = auto"

---
 core/pacman/PKGBUILD                   | 13 ++++++++++
 core/pacman/pentium4-auto-config.patch | 37 +++++++++++++++++++++++++++
 core/pacman/pentium4-tests.patch       | 46 ++++++++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 core/pacman/pentium4-auto-config.patch
 create mode 100644 core/pacman/pentium4-tests.patch

diff --git a/core/pacman/PKGBUILD b/core/pacman/PKGBUILD
index f75db89a..ae268502 100644
--- a/core/pacman/PKGBUILD
+++ b/core/pacman/PKGBUILD
@@ -22,3 +22,16 @@ if [ ! "${CARCH}" = "i686" ]; then
       '
   )"
 fi
+
+# patches for the "i686" -> "pentium4" mangling if "Architecture = auto"
+# see auto-pentium4 branch in git.archlinux32.org:archlinux32/pacman.git
+source+=('pentium4-auto-config.patch'
+         'pentium4-tests.patch')
+sha256sums+=('266276a16aac85a9ee4745968a7bcac833505afa2896b60301997bbe2863fabd'
+             '8e3d1b2dff0cfd7db462bae0d1def5bb83d169128117e2b6ea72d489ab7b0077')
+
+prepare() {
+  cd "$pkgname-$pkgver"
+  patch -p1 -i ../pentium4-auto-config.patch
+  patch -p1 -i ../pentium4-tests.patch
+}
diff --git a/core/pacman/pentium4-auto-config.patch b/core/pacman/pentium4-auto-config.patch
new file mode 100644
index 00000000..5401a64b
--- /dev/null
+++ b/core/pacman/pentium4-auto-config.patch
@@ -0,0 +1,37 @@
+diff --git a/src/pacman/conf.c b/src/pacman/conf.c
+index 3b79fbc7..2325f688 100644
+--- a/src/pacman/conf.c
++++ b/src/pacman/conf.c
+@@ -308,6 +308,11 @@ int config_set_arch(const char *arch)
+ 		struct utsname un;
+ 		uname(&un);
+ 		config->arch = strdup(un.machine);
++		if(strcmp(config->arch, "i686") == 0) {
++			__builtin_cpu_init();
++			if (__builtin_cpu_supports("sse2"))
++				config->arch = strdup("pentium4");
++		}
+ 	} else {
+ 		config->arch = strdup(arch);
+ 	}
+diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c
+index 3bb622e6..abb6f933 100644
+--- a/src/pacman/pacman.c
++++ b/src/pacman/pacman.c
+@@ -274,8 +274,15 @@ static void setuseragent(void)
+ 	int len;
+ 
+ 	uname(&un);
++	char machine[8];
++	strncpy(machine, un.machine, 8);
++	if(strcmp(machine, "i686") == 0) {
++		__builtin_cpu_init();
++		if (__builtin_cpu_supports("sse2"))
++			strncpy(machine, "pentium4", 8);
++	}
+ 	len = snprintf(agent, 100, "pacman/%s (%s %s) libalpm/%s",
+-			PACKAGE_VERSION, un.sysname, un.machine, alpm_version());
++			PACKAGE_VERSION, un.sysname, machine, alpm_version());
+ 	if(len >= 100) {
+ 		pm_printf(ALPM_LOG_WARNING, _("HTTP_USER_AGENT truncated\n"));
+ 	}
diff --git a/core/pacman/pentium4-tests.patch b/core/pacman/pentium4-tests.patch
new file mode 100644
index 00000000..bf0ee2da
--- /dev/null
+++ b/core/pacman/pentium4-tests.patch
@@ -0,0 +1,46 @@
+diff --git a/test/pacman/tests/upgrade082.py b/test/pacman/tests/upgrade082.py
+index 0bdbdf71..8c30ec32 100644
+--- a/test/pacman/tests/upgrade082.py
++++ b/test/pacman/tests/upgrade082.py
+@@ -3,6 +3,18 @@
+ import os
+ machine = os.uname()[4]
+ 
++if machine == 'i686':
++	import re
++	fo = open('/proc/cpuinfo')
++	for line in fo:
++		name_value = [s.strip() for s in line.split(':', 1)]
++		if len(name_value) != 2:
++			continue
++		name, value = name_value
++		if name == "flags":
++			if re.match(r'.*?\bsse2\b', value) is not None:
++				machine = 'pentium4'
++
+ p = pmpkg("dummy")
+ p.files = ["bin/dummy",
+            "usr/man/man1/dummy.1"]
+diff --git a/test/pacman/tests/upgrade083.py b/test/pacman/tests/upgrade083.py
+index 097ae02c..7195e35b 100644
+--- a/test/pacman/tests/upgrade083.py
++++ b/test/pacman/tests/upgrade083.py
+@@ -3,6 +3,18 @@
+ import os
+ machine = os.uname()[4]
+ 
++if machine == 'i686':
++	import re
++	fo = open('/proc/cpuinfo')
++	for line in fo:
++		name_value = [s.strip() for s in line.split(':', 1)]
++		if len(name_value) != 2:
++			continue
++		name, value = name_value
++		if name == "flags":
++			if re.match(r'.*?\bsse2\b', value) is not None:
++				machine = 'pentium4'
++
+ p = pmpkg("dummy")
+ p.files = ["bin/dummy",
+            "usr/man/man1/dummy.1"]
-- 
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