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[bug-gettext] Compile error for gettext-

From: Perry Smith
Subject: [bug-gettext] Compile error for gettext-
Date: Wed, 28 Aug 2013 11:25:52 -0500

I'm on AIX 6.1 TL07 SP03.  gcc is 4.5.2.  I'm doing an out of tree build.

In the build directory, I get two float.h files:


which are essentially identical.

They define union gl_long_double_union which upsets the compiler when both 
copies are included.  This may be an issue way further up stream in the build 
process.  I see these files come from:


which are identical.  I think the text from the build that you need is:

> gcc -std=gnu99 -DLOCALEDIR=\"/gsa/ausgsa/projects/r/ruby/share/locale\" 
> -DHAVE_CONFIG_H -I. -I/usr/work/src/gettext- -I.. 
>  -I../libgettextpo 
> -I/usr/work/src/gettext- -I.. 
> -I../gnulib-lib -I/usr/work/src/gettext- 
> -I../intl -D_THREAD_SAFE -I/gsa/ausgsa/projects/r/ruby/include  -g -O2 -c -o 
> gettextpo_1_prg-gettextpo-1-prg.o `test -f 'gettextpo-1-prg.c' || echo 
> '/usr/work/src/gettext-'`gettextpo-1-prg.c
> In file included from /usr/include/sys/limits.h:302:0,
>                  from /usr/include/sys/localedef.h:42,
>                  from 
> /gsa/ausgsa-p9/06/ruby/bin/../lib/gcc/powerpc-ibm-aix6.1.0.0/4.5.2/include-fixed/stdlib.h:600,
>                  from ../gnulib-lib/stdlib.h:36,
>                  from ../libgettextpo/stdlib.h:36,
>                  from ../libgettextpo/gettext-po.h:21,
>                  from 
> /usr/work/src/gettext-
> ../libgettextpo/float.h:150:7: error: redefinition of 'union 
> gl_long_double_union'
> ../gnulib-lib/float.h:150:7: note: originally defined here
> ../libgettextpo/float.h:155:41: error: conflicting types for 'gl_LDBL_MAX'
> ../gnulib-lib/float.h:155:41: note: previous declaration of 'gl_LDBL_MAX' was 
> here

Line 302 of limits.h has:

#include <float.h>

I cobbled around it by doing this:

> ***************
> *** 147,157 ****
> --- 147,160 ----
>      Unfortunately, this is not a constant expression, and the latter 
> expression
>      does not work well when GCC is optimizing..  */
> + #ifndef BLAH
> + #define BLAH
>   union gl_long_double_union
>     {
>       struct { double hi; double lo; } dd;
>       long double ld;
>     };
> + #endif
>   extern const union gl_long_double_union gl_LDBL_MAX;
>   # define LDBL_MAX (gl_LDBL_MAX.ld)
>   #endif

in both files.  It may be that float.h needs to be renamed if it is going to 
conflict with an existing file.  Fun fun fun building on AIX :-)

I am not sure if I am subscribed to this list or not.  If you need help in 
debugging this, drop me a direct email.

Good luck and thank you,
Perry Smith

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