In reply to @aleksana:mozilla.org
There's something going wrong with gettext and glibc iconv (checking for working iconv...no and iconv_ostream__flush has incompatible pointer type)

This is the part of the "checking for working iconv" test that fails

#include <iconv.h>
#include <string.h>

int
main (void)
{
int result = 0;

  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
     provided.  */
  {
    /* Try standardized names.  */
    iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP");
    /* Try IRIX, OSF/1 names.  */
    iconv_t cd2 = iconv_open ("UTF-8", "eucJP");
    /* Try AIX names.  */
    iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP");
    /* Try HP-UX names.  */
    iconv_t cd4 = iconv_open ("utf8", "eucJP");
    if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1)
        && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1))
      result |= 16;
    if (cd1 != (iconv_t)(-1))
      iconv_close (cd1);
    if (cd2 != (iconv_t)(-1))
      iconv_close (cd2);
    if (cd3 != (iconv_t)(-1))
      iconv_close (cd3);
    if (cd4 != (iconv_t)(-1))
      iconv_close (cd4);
  }
  return result;

  ;
  return 0;
}

Looks like something related to locales which we don't install in bootstrapTools...

libgcc> /nix/store/l4dz7i8kbrrdgrvy1mfd1biwxn29hawv-aarch64-unknown-linux-gnu-binutils-2.44/bin/aarch64-unknown-linux-gnu-ld: error in /build/ccvydBN9.ltrans0.ltrans.o(.eh_frame); no .eh_frame_hdr table will be created
libgcc> /nix/store/l4dz7i8kbrrdgrvy1mfd1biwxn29hawv-aarch64-unknown-linux-gnu-binutils-2.44/bin/aarch64-unknown-linux-gnu-ld: libgcc.a(cas_8_4.o): in function `__aarch64_cas8_acq_rel':
libgcc> /build/gcc-14-20250322/libgcc/config/aarch64/lse.S:196:(.text+0x0): undefined reference to `__aarch64_have_lse_atomics'
libgcc> /nix/store/l4dz7i8kbrrdgrvy1mfd1biwxn29hawv-aarch64-unknown-linux-gnu-binutils-2.44/bin/aarch64-unknown-linux-gnu-ld: /build/gcc-14-20250322/libgcc/config/aarch64/lse.S:196:(.text+0x4): undefined reference to `__aarch64_have_lse_atomics'
libgcc> /nix/store/l4dz7i8kbrrdgrvy1mfd1biwxn29hawv-aarch64-unknown-linux-gnu-binutils-2.44/bin/aarch64-unknown-linux-gnu-ld: libgcc.a(swp_8_4.o): in function `__aarch64_swp8_acq_rel':
libgcc> /build/gcc-14-20250322/libgcc/config/aarch64/lse.S:259:(.text+0x0): undefined reference to `__aarch64_have_lse_atomics'
libgcc> /nix/store/l4dz7i8kbrrdgrvy1mfd1biwxn29hawv-aarch64-unknown-linux-gnu-binutils-2.44/bin/aarch64-unknown-linux-gnu-ld: /build/gcc-14-20250322/libgcc/config/aarch64/lse.S:259:(.text+0x4): undefined reference to `__aarch64_have_lse_atomics'
libgcc> collect2: error: ld returned 1 exit status
libgcc> make: *** [Makefile:1005: libgcc_s.so] Error 1

Fighting this issue

In reply to @aleksana:mozilla.org
There's something going wrong with gettext and glibc iconv (checking for working iconv...no and iconv_ostream__flush has incompatible pointer type)

checking for iconv... yes
checking for working iconv... no
checking whether iconv is compatible with its POSIX signature... yes

and

iconv-ostream.c:311:3: warning: initialization of 'void (*)(struct any_ostream_representation *, ostream_flush_scope_t)' from incompatible pointer type 'void (*)(struct any_ostream_representation *)' []
  311 |   iconv_ostream__flush,
      |   ^~~~~~~~~~~~~~~~~~~~

in https://hydra.nixos.org/build/294707390/nixlog/10

$ nix-store --query --graph $(nix-instantiate -A stdenv)  | grep -P -- '->.*perl-5.40.0.drv' | awk '{print $3}' | sort -u

"92dqkd8x6yh185ps4bbmqdnyzcswsc1q-perl-5.40.0.drv"
"r566ksw3ydjyr1vyzgzn6pbrjx052xs7-perl-5.40.0.drv"
"wgkgyyh5lha8nf6l3w8i3g62gcpwyyfw-perl-5.40.0.drv"

suggests we build it 3 times. Not too many.

In reply to @trofi:matrix.org

$ nix-store --query --graph $(nix-instantiate -A stdenv)  | grep -P -- '->.*perl-5.40.0.drv' | awk '{print $3}' | sort -u

"92dqkd8x6yh185ps4bbmqdnyzcswsc1q-perl-5.40.0.drv"
"r566ksw3ydjyr1vyzgzn6pbrjx052xs7-perl-5.40.0.drv"
"wgkgyyh5lha8nf6l3w8i3g62gcpwyyfw-perl-5.40.0.drv"

suggests we build it 3 times. Not too many.