Bug#561475: libgcrypt11/mips(el): FTBFS with gcc-4.4

[Aurelien Jarno]

Package: libgcrypt11
Version: 1.4.1-1
Severity: serious
Tags: patch
Justification: fails to build from source

mpfr fails to build on mips(el) with gcc-4.4. A full build log can be
found here:
https://buildd.debian.org/fetch.cgi?pkg=libgcrypt11&arch=mipsel&ver=1.4.5-1&stamp=1260977092&file=log&as=raw

This is due to a change in GCC 4.4, the h asm constraint is not 
supported anymore on mips. For more details please have a look at:
http://gcc.gnu.org/gcc-4.4/changes.html

The patch below fixes the problem by implementing the solution
recommended by the previous web page. With it libgcrypt11 builds 
successfully.

--- libgcrypt11-1.4.5.orig/mpi/longlong.h
+++ libgcrypt11-1.4.5/mpi/longlong.h
@@ -714,7 +714,15 @@ extern USItype __udiv_qrnnd ();
  **************  MIPS  *****************
  ***************************************/
 #if defined (__mips__) && W_TYPE_SIZE == 32
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+#if (__GNUC__ >= 5) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+#define umul_ppmm(w1, w0, u, v) \
+  do {                                                                  \
+    UDItype _r;                                                         \
+    _r = (UDItype) u * v;                                               \
+    (w1) = _r >> 32;                                                    \
+    (w0) = (USItype) _r;                                                \
+  } while (0)
+#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
 #define umul_ppmm(w1, w0, u, v) \
   __asm__ ("multu %2,%3"                                                \
 	   : "=l" ((USItype)(w0)),                                      \
@@ -739,7 +747,16 @@ extern USItype __udiv_qrnnd ();
  **************  MIPS/64  **************
  ***************************************/
 #if (defined (__mips) && __mips >= 3) && W_TYPE_SIZE == 64
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
+#if (__GNUC__ >= 5) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+typedef unsigned int UTItype __attribute__ ((mode (TI)));
+#define umul_ppmm(w1, w0, u, v) \
+  do {                                                                 \
+    UTItype _r;                                                        \
+    _r = (UTItype) u * v;                                              \
+    (w1) = _r >> 64;                                                   \
+    (w0) = (UDItype) _r;                                               \
+  } while (0)
+#elif __GNUC__ > 2 || __GNUC_MINOR__ >= 7
 #define umul_ppmm(w1, w0, u, v) \
   __asm__ ("dmultu %2,%3"                                               \
 	   : "=l" ((UDItype)(w0)),                                      \


-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: mipsel (mips64)

Kernel: Linux 2.6.26-2-5kc-malta
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash