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RE: bug#39118: Segfault while building on 64-bit Cygwin

From: dsmich
Subject: RE: bug#39118: Segfault while building on 64-bit Cygwin
Date: Fri, 24 Jan 2020 15:26:42 +0000

Pretty sure that the missing readline symbol is because the macos readline is being used/found instead of GNU readline.



From: "John Cowan"
To: "Ludovic Courtès"
Cc: address@hidden, address@hidden
Sent: Friday January 24 2020 9:36:59AM
Subject: bug#39118: Segfault while building on 64-bit Cygwin

Both Cygwin and MacOS crash in pretty much the same way.  By disabling the JIT, I was able to get the Cygwin build to run to completion.  On MacOS with --disable-jit, however, I am now getting an entirely new failure:

  CC       readline.lo
readline.c:432:7: warning: implicitly declaring library function 'strncmp' with type 'int (const char *, const char *,
      unsigned long)' [-Wimplicit-function-declaration]
  if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
readline.c:432:7: note: include the header <string.h> or explicitly provide a declaration for 'strncmp'
readline.c:432:16: warning: implicit declaration of function 'rl_get_keymap_name' is invalid in C99
  if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
readline.c:432:16: warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'const char *'
  if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
3 warnings generated.
Undefined symbols for architecture x86_64:
  "_rl_get_keymap_name", referenced from:
      _scm_init_readline in readline.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

On Thu, Jan 23, 2020 at 3:35 PM Ludovic Courtès <address@hidden> wrote:

John Cowan <address@hidden> skribis:

> Thanks.  Unfortunately, the standard recipe for making core dumps on Mac

This bug report is about Cygwin, not macOS, right?  :-)


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