Re: [bug #65827] Cross-compilation fails with gcc 14.1.0

[Brett Neumeier]

On 6/3/24 08:30, Chet Ramey wrote:
  On 6/2/24 9:43 AM, Brett Neumeier wrote:
  
    ./configure --build=x86_64-unknown-linux-gnu --host=aarch64-cbl-linux-gnu
    --enable-static-link --without-bash-malloc
    
    I get this failure:
    
    [...]
    
    If I add "#include <unistd.h>" to tparam.c, it builds fine.
  
  Thanks for the report.
  
  I'm more interested in why configuring for your cross-compilation
  environment doesn't find any of the curses libraries or headers. Do
  you have them installed?

Hello Mr Ramey and thank you for your email!

In my previous build, I didn't have ncurses set as a dependency of bash, so 
bash was getting built first -- and then there was no ncurses for it to find.

I made sure ncurses was already available and the initial problem went away. 
When I configured ncurses (6.5) using the default settings, including wide 
character support, I got a different failure:

aarch64-cbl-linux-gnu-gcc -L./builtins -L./lib/readline -L./lib/readline 
-L./lib/glob -L./lib/tilde  -L./lib/sh  
-L/home/lbl/work/sysroot/scaffolding/lib -rdynamic -I/home/lbl/work/sy
sroot/scaffolding/include  -static -o bash shell.o eval.o y.tab.o general.o 
make_cmd.o print_cmd.o  dispose_cmd.o execute_cmd.o variables.o copy_cmd.o 
error.o expr.o flags.o jobs.o su
bst.o hashcmd.o hashlib.o mailcheck.o trap.o input.o unwind_prot.o pathexp.o 
sig.o test.o version.o alias.o array.o arrayfunc.o assoc.o braces.o bracecomp.o 
bashhist.o bashline.o  lis
t.o stringlib.o locale.o findcmd.o redir.o pcomplete.o pcomplib.o syntax.o 
xmalloc.o signames.o -lbuiltins -lglob -lsh -lreadline -lhistory -lncurses 
-ltilde     
/home/lbl/work/crosstools/lib/gcc/aarch64-cbl-linux-gnu/14.1.1/../../../../aarch64-cbl-linux-gnu/bin/ld:
 cannot find -lncurses: No such file or directory

I don't quite understand why having widec support caused a problem -- the bash 
config.log shows:

configure:21471: checking for tgetent in -lncurses
configure:21494: aarch64-cbl-linux-gnu-gcc -o conftest 
-I/home/lbl/work/sysroot/scaffolding/include  
-L/home/lbl/work/sysroot/scaffolding/lib conftest.c -lncurses   >&5
/home/lbl/work/crosstools/lib/gcc/aarch64-cbl-linux-gnu/14.1.1/../../../../aarch64-cbl-linux-gnu/bin/ld:
 cannot find -lncurses: No such file or directory

and

configure:21510: checking for tgetent in -lncursesw
configure:21533: aarch64-cbl-linux-gnu-gcc -o conftest -I/home/lbl/work/sysroot/
scaffolding/include  -L/home/lbl/work/sysroot/scaffolding/lib conftest.c -lncurs
esw   >&5
configure:21533: $? = 0
configure:21543: result: yes
configure:21565: checking which library has the termcap functions
configure:21568: result: using libncursesw

so the configure seems to find libncursesw just fine, but then still tries to 
link against libncurses.

When I rebuilt ncurses with `--disable-widec`, the bash build succeeds.

Thank you again for your help!

Cheers,

Brett