Re: Problem building GNAT CE 2021 on Mac Catalina

[Roger Mc <rogermcm2@gmail.com>]

On Friday, June 18, 2021 at 2:49:28 AM UTC+10, Simon Wright wrote:
> Roger Mc <roge...@gmail.com> writes: 
> 
> > Mac OSX 10.15.7 
> > XCode 12.0 
> > 
> > I am attemting to build using the insttructions provided by the 
> > README.BUILD from the source distribution of GNAT. 
> > 
> > I configure successfully from my /opt/GNAT/2021/obj directory with 
> > 
> > ../src/configure --enable-languages="c,ada" --disable-libada 
> > --with-gmp=/usr/local/Cellar/gmp/6.2.1 
> > --with-mpfr=/usr/local/Cellar/mpfr/4.1.0 
> > --with-mpc=/usr/local/Cellar/libmpc/1.1.0 
> > 
> > Although My /usr/local/include directory does include libintl.h 
> > make bootstrap fails with: 
> > In file included from ../../src/libcpp/charset.c:21: 
> > ../../src/libcpp/system.h:279:10: fatal error: libintl.h: No such file 
> > or directory 
> > #include <libintl.h>
> I think those instructions are rather old. Two things: 
> 
> * usually, GCC build instructions say not to make the build directory a 
> subdirectory of the source 
My build directory is not a subdirectory of the source 
> * nowadays you don't need to --disable-libada and then "make -C gcc 
> gnatlib gnattools" 
> 
> What compiler are you starting from? 
GNAT 2020
> 
> What stage of the build did this fail at? (stage_current in the build 
> directory) 
I think stage 3
> 
> It looks as though this is to do with "Native Language Support (NLS), 
> which lets GCC output diagnostics in languages other than American 
> English". The configuration documentation at 
> https://gcc.gnu.org/install/configure.html suggests --disable-nls (which 
> is what I do) or --with-included-gettext.

Thanks for the advice which has been quite helpful.
I have progressed but still, after quit a long time the build fails.
My current method:
In src/gcc/Makefile.in change the  path to the system headers on the build machine to:
BUILD_SYSTEM_HEADER_DIR = /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include

Follow instructions in gnat-2021-20210519-19A70-src/src

 ../src/configure --enable-languages="c,ada" --with-gmp=/usr/local/Cellar/gmp/6.2.1 --with-mpfr=/usr/local/Cellar/mpfr/4.1.0 --with-mpc=/usr/local/Cellar/libmpc/1.1.0 --disable-nls --disable-libstdcxx

make boostrap

results in:
raise-gcc.c:718:18: warning: 'cleanup_filter' defined but not used [-Wunused-const-variable=]
  718 | static const int cleanup_filter = 0;
      |                  ^~~~~~~~~~~~~~
raise-gcc.c:627:1: warning: 'get_ttype_entry_for' defined but not used [-Wunused-function]
  627 | get_ttype_entry_for (region_descriptor *region, long filter)
      | ^~~~~~~~~~~~~~~~~~~
make[6]: *** [raise-gcc.o] Error 1
make[5]: *** [gnatlib] Error 2
make[4]: *** [gnatlib-shared-darwin] Error 2
make[3]: *** [gnatlib-shared] Error 2
make[2]: *** [gnatlib-shared] Error 2
make[1]: *** [all-target-libada] Error 2
make: *** [bootstrap] Error 2

This occurs a long way after:
Comparing stages 2 and 3
Comparison successful.
.....
Configuring in ./fixincludes
.....
Configuring in ./gnattools
.....
Configuring in x86_64-apple-darwin19.6.0/libada
....

This seems to be the relevant command and first error message preceding many other warning and error messages before final failure:
/opt/GNAT/2021/obj/./gcc/xgcc -B/opt/GNAT/2021/obj/./gcc/ -B/usr/local/x86_64-apple-darwin19.6.0/bin/ -B/usr/local/x86_64-apple-darwin19.6.0/lib/ -isystem /usr/local/x86_64-apple-darwin19.6.0/include -isystem /usr/local/x86_64-apple-darwin19.6.0/sys-include   -fchecking=1 -c -DIN_GCC  -W -Wall -g -O2 -g -O2 -fexceptions -DIN_RTS -DHAVE_GETIPINFO   -fno-common -fno-common   \
	      -iquote . -iquote .. -iquote ../.. -iquote /opt/GNAT/2021/src/gcc/ada -iquote /opt/GNAT/2021/src/gcc -I/opt/GNAT/2021/src/include  -I./../.. -fno-omit-frame-pointer tracebak.c -o tracebak.o

In file included from tracebak.c:603:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/unwind.h:208:48: warning: 'unavailable' attribute directive ignored [-Wattributes]
  208 | extern uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context* context) __attribute__((unavailable));

This failure is way beyond my understanding of the build process.
Thanks.