Re: Unable to install M4 1.4.17 using PGI 15.10 compilers

[Bruno Haible]

> Here are some smaller attachments.

Thanks. From the build.out:

builtin.o: In function `xnmalloc':
/scratch/ajstewart/m4-1.4.17/src/../lib/xalloc.h:104: multiple definition of 
`xnmalloc'
m4.o:/scratch/ajstewart/m4-1.4.17/src/../lib/xalloc.h:104: first defined here

This means, the compilers sees a conflict between two definitions of
'xnmalloc', both with _GL_INLINE, in different compilation units.
_GL_INLINE expands to 'inline' or 'static', depending on the compiler.
(See m4/extern-inline.m4.) We can assume that if _GL_INLINE expanded to
'static', you wouldn't see this error.

Here's a proposed fix (in gnulib) (based on the predef list at
https://sourceforge.net/p/predef/wiki/Compilers/):


>From cf4e1225e443180a5a838846d3f9b12baa376605 Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sat, 5 Mar 2016 01:35:03 +0100
Subject: [PATCH] extern-inline: port to PGI CC

* m4/extern-inline.m4 (gl_EXTERN_INLINE): For PGI CC, don't use the
keyword 'inline'.
Reported by Adam James Stewart in:
http://lists.gnu.org/archive/html/bug-gnulib/2016-03/msg00006.html
---
 ChangeLog           | 8 ++++++++
 m4/extern-inline.m4 | 1 +
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 8634579..2ccfcb7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2016-03-05  Bruno Haible  <address@hidden>
+
+       extern-inline: port to PGI CC
+       * m4/extern-inline.m4 (gl_EXTERN_INLINE): For PGI CC, don't use the
+       keyword 'inline'.
+       Reported by Adam James Stewart in:
+       http://lists.gnu.org/archive/html/bug-gnulib/2016-03/msg00006.html
+
 2016-02-20  Paul Eggert  <address@hidden>
 
        signbit: port back to pre-C++11 GCC
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index fe282a5..1e578f3 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -54,6 +54,7 @@ AC_DEFUN([gl_EXTERN_INLINE],
       ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
       : (199901L <= __STDC_VERSION__ \
          && !defined __HP_cc \
+         && !defined __PGI \
          && !(defined __SUNPRO_C && __STDC__))) \
      && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
 # define _GL_INLINE inline
-- 
2.6.4