Your message dated Fri, 19 Feb 2021 16:18:45 +0000
with message-id <[email protected]>
and subject line Bug#980484: fixed in gmap 2021-02-12+ds-1
has caused the Debian Bug report #980484,
regarding gmap FTCBFS: AC_RUN_IFELSE
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
980484: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980484
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: gmap
Version: 2020-12-17+ds-2
Tags: patch upstream
User: [email protected]
Usertags: ftcbfs
gmap fails to cross build from source, because it uses AC_RUN_IFELSE a
lot. I wa able to reduce the impact somewhat with the attached patch:
* When checking for e.g. __builtin_popcount, still check that it works
on native builds, but during cross builds assume that it works when
the symbol is available.
* The bsr assembler instruction test doesn't gain anything from running
it. It can be demoted to a link test.
* Checks involving #include <immintrin.h> can be skipped when the
header is unavailable.
This still leaves a number of remaining AC_RUN_IFELSE and gmap will not
become cross buildable. Please consider applying my patch as an
incremental improvement nonetheless.
Helmut
--- gmap-2020-12-17+ds.orig/config/builtin-popcount.m4
+++ gmap-2020-12-17+ds/config/builtin-popcount.m4
@@ -33,29 +33,41 @@
# Test for __builtin functions with or without the -mpopcnt compiler flag
CFLAGS="$CFLAGS_ORIG $POPCNT_CFLAGS"
-AC_MSG_CHECKING(for __builtin_popcount)
+AC_CHECK_DECL([__builtin_popcount],[
+AC_MSG_CHECKING(whether __builtin_popcount works)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[]],
[[return (__builtin_popcount(0xffffffffu) == 32) ? 0 : 9;]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_BUILTIN_POPCOUNT],[1],[Define to 1 if __builtin_popcount works.])],
- [AC_MSG_RESULT(no)])
+ [AC_MSG_RESULT(no)],
+ [AC_MSG_RESULT([cross, guessing yes])
+ AC_DEFINE([HAVE_BUILTIN_POPCOUNT],[1],[Define to 1 if __builtin_popcount works.])])
+],[])
-AC_MSG_CHECKING(for __builtin_clz)
+AC_CHECK_DECL([__builtin_clz],[
+AC_MSG_CHECKING(whether __builtin_clz works)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[]],
[[return (__builtin_clz(0x1u) == 31) ? 0 : 9;]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_BUILTIN_CLZ],[1],[Define to 1 if __builtin_clz works.])],
- [AC_MSG_RESULT(no)])
+ [AC_MSG_RESULT(no)],
+ [AC_MSG_RESULT([cross, guessing yes])
+ AC_DEFINE([HAVE_BUILTIN_CLZ],[1],[Define to 1 if __builtin_clz works.])])
+],[])
-AC_MSG_CHECKING(for __builtin_ctz)
+AC_CHECK_DECL([__builtin_ctz],[
+AC_MSG_CHECKING(whether __builtin_ctz works)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[]],
[[return (__builtin_ctz(0x80000000u) == 31) ? 0 : 9;]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_BUILTIN_CTZ],[1],[Define to 1 if __builtin_ctz works.])],
- [AC_MSG_RESULT(no)])
+ [AC_MSG_RESULT(no)],
+ [AC_MSG_RESULT([cross, guessing yes])
+ AC_DEFINE([HAVE_BUILTIN_CTZ],[1],[Define to 1 if __builtin_ctz works.])])
+])
CFLAGS=$CFLAGS_ORIG
--- gmap-2020-12-17+ds.orig/config/asm-bsr.m4
+++ gmap-2020-12-17+ds/config/asm-bsr.m4
@@ -4,7 +4,7 @@
AC_LANG(C)
AC_MSG_CHECKING(for bsr instruction in assembly)
-AC_RUN_IFELSE(
+AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[ ]],
[[int msb; unsigned int x = rand(); asm("bsr %1,%0" : "=r"(msb) : "r"(x));]])],
[AC_MSG_RESULT(yes)
--- gmap-2020-12-17+ds.orig/config/ax_cpuid_intel.m4
+++ gmap-2020-12-17+ds/config/ax_cpuid_intel.m4
@@ -1,6 +1,7 @@
AC_DEFUN([AX_CPUID_INTEL],
[AC_REQUIRE([AC_PROG_CC])
AC_LANG_PUSH([C])
+AC_CHECK_HEADER([immintrin.h],[
# Test for SSE2 support
AC_MSG_CHECKING(for sse2 support)
AC_RUN_IFELSE(
@@ -63,7 +64,7 @@
[AC_MSG_RESULT(yes)
ax_cv_cpu_has_avx512bw_ext=yes],
[AC_MSG_RESULT(no)])
-
+],[])
AC_LANG_POP([C])
])
--- End Message ---
--- Begin Message ---
Source: gmap
Source-Version: 2021-02-12+ds-1
Done: Michael R. Crusoe <[email protected]>
We believe that the bug you reported is fixed in the latest version of
gmap, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Michael R. Crusoe <[email protected]> (supplier of updated gmap package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Fri, 19 Feb 2021 16:32:15 +0100
Source: gmap
Architecture: source
Version: 2021-02-12+ds-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Med Packaging Team
<[email protected]>
Changed-By: Michael R. Crusoe <[email protected]>
Closes: 980484
Changes:
gmap (2021-02-12+ds-1) unstable; urgency=medium
.
* Team upload.
* Apply patch from Helmut Grohne for slightly better cross building
support. Closes: #980484
* New upstream release.
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