Need help building a Canadian Cross

[Georg-Johann Lay via Gcc-help <gcc-help@xxxxxxxxxxx>]

Maybe someone can give a hint what goes wrong building a canadian cross.

build = x86_64-pc-linux-gnu
host = i686-w64-mingw32
target = avr

$ g++ --version
g++ (Debian 14.2.0-19) 14.2.0

$ i686-w64-mingw32-g++ --version
i686-w64-mingw32-g++ (GCC) 14-win32

What works:
* Building a v15.1 native-cross (B=H=x86_64-pc-linux-gnu, T=avr)
* Building a v15.1 canadian-cross

* Building a v8.5 native-cross (B=H=x86_64-pc-linux-gnu, T=avr)

What fails:
* Building a v8.5 canadian-cross

In any case:
* configure options for native and canadian are the same (except for 
--host --enable-mingw-wildcard and --prefix)
* The native-cross is installed and in front of PATH when the canadian 
is configured / build.
* builddir is outside of srcdir

The error occurs when building gcc/diagnostic-color.c:

i686-w64-mingw32-g++ -fno-PIE -c   -g  -DIN_GCC 
-DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti 
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings 
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic 
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings 
-DHAVE_CONFIG_H -I. -I. -I../../src-gcc/gcc -I../../src-gcc/gcc/. 
-I../../src-gcc/gcc/../include -I../../src-gcc/gcc/../libcpp/include 
-I/home/gjl/boo8/obj-gcc-w32/./gmp -I/home/gjl/boo8/src-gcc/gmp 
-I/home/gjl/boo8/obj-gcc-w32/./mpfr/src 
-I/home/gjl/boo8/src-gcc/mpfr/src -I/home/gjl/boo8/src-gcc/mpc/src 
-I../../src-gcc/gcc/../libdecnumber 
-I../../src-gcc/gcc/../libdecnumber/dpd -I../libdecnumber 
-I../../src-gcc/gcc/../libbacktrace 
-I/home/gjl/boo8/obj-gcc-w32/./isl/include 
-I/home/gjl/boo8/src-gcc/isl/include  -o diagnostic-color.o -MT 
diagnostic-color.o -MMD -MP -MF ./.deps/diagnostic-color.TPo 
../../src-gcc/gcc/diagnostic-color.c
../../src-gcc/gcc/system.h:737:30: error: expected identifier before 
string constant
   737 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
       |                              ^~~~~~~~
../../src-gcc/gcc/system.h:737:30: error: expected ‘,’ or ‘...’ before 
string constant
../../src-gcc/gcc/system.h:737:30: error: expected identifier before 
string constant
   737 | #define abort() fancy_abort (__FILE__, __LINE__, __FUNCTION__)
       |                              ^~~~~~~~
../../src-gcc/gcc/system.h:737:30: error: expected ‘,’ or ‘...’ before 
string constant

Maybe this rings a bell and someone knows how to fix that.  Compiling by 
hand and adding -save-temps -dumpbase "" -g3 changes the error message to

In file included from /usr/share/mingw-w64/include/urlmon.h:458,
                  from /usr/share/mingw-w64/include/objbase.h:163,
                  from /usr/share/mingw-w64/include/ole2.h:17,
                  from /usr/share/mingw-w64/include/wtypes.h:13,
                  from /usr/share/mingw-w64/include/winscard.h:10,
                  from /usr/share/mingw-w64/include/windows.h:97,
                  from ../../src-gcc/gcc/diagnostic-color.c:24:
/usr/share/mingw-w64/include/msxml.h:1104:51: error: expected identifier 
before string constant
  1104 |     virtual HRESULT STDMETHODCALLTYPE abort(
       |                                                   ^
/usr/share/mingw-w64/include/msxml.h:1104:51: error: expected ‘,’ or 
‘...’ before string constant
/usr/share/mingw-w64/include/msxml.h:8309:51: error: expected identifier 
before string constant
  8309 |     virtual HRESULT STDMETHODCALLTYPE abort(
       |                                                   ^
/usr/share/mingw-w64/include/msxml.h:8309:51: error: expected ‘,’ or 
‘...’ before string constant

Attached you find diagnostic-color.ii as generated with -g3 for 
reference.  When I remove all line notes from the ii so that
the real lines are displayed, the error message is:

diagnostic-color-ii.c:84249:51: error: expected identifier before string 
constant
84249 |                                      fancy_abort 
("/usr/share/mingw-w64/include/msxml.h", 1104, __FUNCTION__)
       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diagnostic-color-ii.c:84249:51: error: expected ‘,’ or ‘...’ before 
string constant
diagnostic-color-ii.c:84724:51: error: expected identifier before string 
constant
84724 |                                      fancy_abort 
("/usr/share/mingw-w64/include/msxml.h", 8309, __FUNCTION__)
       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diagnostic-color-ii.c:84724:51: error: expected ‘,’ or ‘...’ before 
string constant

This is the code:

     virtual HRESULT __attribute__((__stdcall__))
                                      fancy_abort 
("/usr/share/mingw-w64/include/msxml.h", 1104, __FUNCTION__)
          = 0;

For reference, here is I configured GCC v8.5:

$ ../src-gcc/configure --target=avr --enable-languages=c,c++ 
--with-gnu-as --with-gnu-ld --with-dwarf2 --disable-nls --disable-libcc1 
--disable-libssp --disable-plugin --enable-checking=release 
--host=i686-w64-mingw32 --build=x86_64-pc-linux-gnu --enable-mingw-wildcard

Thank you

Johann

<<attachment: diagnostic-color.ii.zip>>