Re: [PATCH] bash-5.3-rc1 FTBFS when cross compiling with gcc-15

[Chet Ramey]

On 5/21/25 5:02 PM, Bruce Dubbs wrote:

In linuxfromscratch we do a preliminary build of bash in order to



./configure --prefix=/usr               \
             --build=x86_64-pc-linux-gnu \
             --host=x86_64-lfs-linux-gnu \
             --without-bash-malloc

When we do this, the build runs:

   gcc -c  -DHAVE_CONFIG_H -DSHELL -I. -I..  -I.. -I../include -I../lib -I.  \
       -Wno-parentheses -Wno-format-security -DDEBUG  -g -DCROSS_COMPILING   \
        mkbuiltins.c

Looking at ./builtins/mkbuiltins.c we have:

#if !defined (CROSS_COMPILING)
#  include <config.h>
...
#include "../bashansi.h"

run it later in a chroot environment without any dependencies from the host system:

Yes, cross-compiling means that config.h is for the target system, not the
build system. The build system assumes a very conservative C90/XPG6
compilation environment.

Bash-5.3 introduces a buildconf.h file for this situation; I'll see if I
can fix this there and have mkbuiltins.c include it.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    c...@case.edu    http://tiswww.cwru.edu/~chet/

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