[Bug target/97865] libtool needs to be updated for Darwin20.

["juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97865

--- Comment #16 from Jürgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Iain Sandoe from comment #15)
> (In reply to Jürgen Reuter from comment #14)
> > If there is a git branch or so, I could also test it on my system with our
> > code whether this works as expected.
> 
> Here you go - this is config.{sub, guess}, libtool and a small patch to
> enable libsanitizer for darwin20 (which I'll likely push soon).
> 
> https://github.com/iains/gcc-git/tree/master-wip-config-darwin20

I tested your branch. Several observations: 
(1) make worked, (I used gmp, mpfr and mpc without patches for them, there 
     libtool is also outdated, but I'm not sure whether it has any influence)
(2) make check did not work because of the first error below.
(3) make install did produce an error, strangely enough, as make worked without 
     problem.
(4) I checked that on my system there is an older version of libasan installed.
     I thought this comes with every gcc installation, but apparently it 
     doesn't. Or do I have to build with a special sanitizer flag? 
(5) Your branch does NOT solve the problems in our codes, I do see the same 
    failures in our test suite like with the gcc trunk/master. 

The test-suite for the gcc itself did not work because
of this:
sys/types.h
/usr/local/packages/iains_gcc_git/fixincludes/tests/base/sys/types.h differ:
char 243, line 12
*** sys/types.h 2020-11-19 08:29:08.000000000 +0100
--- /usr/local/packages/iains_gcc_git/fixincludes/tests/base/sys/types.h       
2020-11-18 22:28:10.000000000 +0100
***************
*** 9,19 ****


- #if defined( AIX_PHYSADR_T_CHECK )
- typedef struct __physadr_s {
- #endif  /* AIX_PHYSADR_T_CHECK */
- 
- 
  #if defined( GNU_TYPES_CHECK )
  #if !defined(_GCC_PTRDIFF_T)
  #define _GCC_PTRDIFF_T
--- 9,14 ----

There were fixinclude test FAILURES
make[2]: *** [check] Error 1
make[1]: *** [check-fixincludes] Error 2
make: *** [do-check] Error 2


Also `make install` did not work properly due to the following error (which is
strange, as make worked without problems). 



 -L/usr/local//lib -lmpc -lmpfr -lgmp   -L./../zlib -lz 
clang: error: argument unused during compilation: '-no-pie'
[-Werror,-Wunused-command-line-argument]
make[2]: [cc1plus] Error 1 (ignored)
g++ -std=c++11 -no-pie   -g -O2 -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H  -o f951 \
                fortran/arith.o fortran/array.o fortran/bbt.o fortran/check.o
fortran/class.o fortran/constructor.o fortran/cpp.o fortran/data.o
fortran/decl.o fortran/dump-parse-tree.o fortran/error.o fortran/expr.o
fortran/interface.o fortran/intrinsic.o fortran/io.o fortran/iresolve.o
fortran/match.o fortran/matchexp.o fortran/misc.o fortran/module.o
fortran/openmp.o fortran/options.o fortran/parse.o fortran/primary.o
fortran/resolve.o fortran/scanner.o fortran/simplify.o fortran/st.o
fortran/symbol.o fortran/target-memory.o darwin-f.o fortran/convert.o
fortran/dependency.o fortran/f95-lang.o fortran/trans.o fortran/trans-array.o
fortran/trans-common.o fortran/trans-const.o fortran/trans-decl.o
fortran/trans-expr.o fortran/trans-intrinsic.o fortran/trans-io.o
fortran/trans-openmp.o fortran/trans-stmt.o fortran/trans-types.o
fortran/frontend-passes.o libbackend.a main.o libcommon-target.a libcommon.a
../libcpp/libcpp.a ../libdecnumber/libdecnumber.a -L./../zlib -lz libcommon.a
../libcpp/libcpp.a ./../intl/libintl.a -liconv 
../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a
../libdecnumber/libdecnumber.a  attribs.o \
                 -L/usr/local//lib -L/usr/local//lib -lmpc -lmpfr -lgmp  
-L./../zlib -lz 
clang: error: argument unused during compilation: '-no-pie'
[-Werror,-Wunused-command-line-argument]
make[2]: [f951] Error 1 (ignored)
g++ -std=c++11 -no-pie   -g -O2 -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H  -o lto1 \
                lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o
lto/lto-partition.o lto/lto-symtab.o lto/lto-common.o libbackend.a main.o
libcommon-target.a libcommon.a ../libcpp/libcpp.a
../libdecnumber/libdecnumber.a  -L/usr/local//lib -L/usr/local//lib -lmpc
-lmpfr -lgmp   -L./../zlib -lz  libcommon.a ../libcpp/libcpp.a
./../intl/libintl.a -liconv  ../libbacktrace/.libs/libbacktrace.a
../libiberty/libiberty.a ../libdecnumber/libdecnumber.a 
clang: error: argument unused during compilation: '-no-pie'
[-Werror,-Wunused-command-line-argument]
make[2]: [lto1] Error 1 (ignored)
g++ -std=c++11 -no-pie   -g -O2 -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H  -o lto-dump \
                lto/lto-lang.o lto/lto-object.o attribs.o lto/lto-partition.o
lto/lto-symtab.o lto/lto-dump.o lto/lto-common.o libbackend.a main.o
libcommon-target.a libcommon.a ../libcpp/libcpp.a
../libdecnumber/libdecnumber.a  -L/usr/local//lib -L/usr/local//lib -lmpc
-lmpfr -lgmp   -L./../zlib -lz  libcommon.a ../libcpp/libcpp.a
./../intl/libintl.a -liconv  ../libbacktrace/.libs/libbacktrace.a
../libiberty/libiberty.a ../libdecnumber/libdecnumber.a 
clang: error: argument unused during compilation: '-no-pie'
[-Werror,-Wunused-command-line-argument]
make[2]: [lto-dump] Error 1 (ignored)