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Re: [PATCH 3/3] Introduce _REENT_GLOBAL_STDIO_STREAMS

On 23/06/17 23:53, Freddie Chopin wrote:


On Fri, 2017-06-23 at 11:22 +0200, Sebastian Huber wrote:

Introduce a new Newlib configuration option
_REENT_GLOBAL_STDIO_STREAMS
to enable the use of global stdio FILE objects.  Use this option for
RTEMS.

Coult this be turned into an option for ./configure script? This seems
like a very useful change for any microcontroller target (like "arm-
none-eabi-"), but if this option can be enabled only by modifications
of the source code, then doing that for a generic case (no specific
RTOS) probably won't be popular.
How safe is it to use configure generated options in header files? For example during libgcc build, the Newlib configure didn't run yet. For example: 

[...]
make[2]: Entering directory '/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/libgcc' 
# If this is the top-level multilib, build all the other
/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/xgcc -B/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/ -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include -g -O2 -O2 -I/home/EB/sebastian_h/archive/gcc-git/libgcc/../newlib/libc/sys/rtems/include -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -I. -I. -I../.././gcc -I/home/EB/sebastian_h/archive/gcc-git/libgcc -I/home/EB/sebastian_h/archive/gcc-git/libgcc/. -I/home/EB/sebastian_h/archive/gcc-git/libgcc/../gcc -I/home/EB/sebastian_h/archive/gcc-git/libgcc/../include -DHAVE_CC_TLS -o _mulsi3_s.o -MT _mulsi3_s.o -MD -MP -MF _mulsi3_s.dep -DSHARED -DL_mulsi3 -xassembler-with-cpp -c /home/EB/sebastian_h/archive/gcc-git/libgcc/config/sparc/lb1spc.S 
[....]
=== configuring in libc (/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/libc) configure: running /bin/sh /home/EB/sebastian_h/archive/gcc-git/newlib/libc/configure --disable-option-checking '--prefix=/opt/rtems-4.12' '--with-multisubdir=soft' '--with-multisrctop=' '--enable-multilib' '--with-cross-host=x86_64-pc-linux-gnu' '--verbose' '--with-gnu-as' '--with-gnu-ld' '--with-newlib' '--disable-libstdcxx-pch' '--disable-nls' '--disable-lto' '--disable-plugin' '--without-included-gettext' '--disable-win32-registry' '--enable-version-specific-runtime-libs' '--enable-threads' '--enable-newlib-iconv' '--enable-newlib-iconv-encodings=big5,cp775,cp850,cp852,cp855,cp866,euc_jp,euc_kr,euc_tw,iso_8859_1,iso_8859_10,iso_8859_11,iso_8859_13,iso_8859_14,iso_8859_15,iso_8859_2,iso_8859_3,iso_8859_4,iso_8859_5,iso_8859_6,iso_8859_7,iso_8859_8,iso_8859_9,iso_ir_111,koi8_r,koi8_ru,koi8_u,koi8_uni,ucs_2,ucs_2_internal,ucs_2be,ucs_2le,ucs_4,ucs_4_internal,ucs_4be,ucs_4le,us_ascii,utf_16,utf_16be,utf_16le,utf_8,win_1250,win_1251,win_1252,win_1253,win_1254,win_1255,win_1256,win_1257,win_1258' '--enable-newlib-io-c99-formats' '--enable-libgomp' '--enable-languages=c,c++' '--program-transform-name=s&^&sparc-rtems4.12-&' '--with-target-subdir=sparc-rtems4.12' '--build=x86_64-pc-linux-gnu' '--host=sparc-rtems4.12' '--target=sparc-rtems4.12' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=sparc-rtems4.12' 'target_alias=sparc-rtems4.12' 'CC=/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/xgcc -B/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/ -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include ' 'CFLAGS=-g -O2' 'LDFLAGS=' 'CPPFLAGS=' 'CC=/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/xgcc -B/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/ -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include -msoft-float' 'CXX=/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/xg++ -B/build/git-build/b-gcc-git-sparc-rtems4.12/./gcc/ -nostdinc++ -funconfigured-libstdc++-v3 -L/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/libstdc++-v3/src -L/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/libstdc++-v3/src/.libs -L/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/libstdc++-v3/libsupc++/.libs -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include -msoft-float' 'F77= -msoft-float' 'GCJ= -msoft-float' 'GFORTRAN=sparc-rtems4.12-gfortran -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include -msoft-float' 'GOC=sparc-rtems4.12-gccgo -nostdinc -B/build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/ -isystem /build/git-build/b-gcc-git-sparc-rtems4.12/sparc-rtems4.12/soft/newlib/targ-include -isystem /home/EB/sebastian_h/archive/gcc-git/newlib/libc/include -B/opt/rtems-4.12/sparc-rtems4.12/bin/ -B/opt/rtems-4.12/sparc-rtems4.12/lib/ -isystem /opt/rtems-4.12/sparc-rtems4.12/include -isystem /opt/rtems-4.12/sparc-rtems4.12/sys-include -msoft-float' 'LD_LIBRARY_PATH=/build/git-build/b-gcc-git-sparc-rtems4.12/./gmp/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./prev-gmp/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./mpfr/src/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./prev-mpfr/src/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./mpc/src/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./prev-mpc/src/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./isl/.libs:/build/git-build/b-gcc-git-sparc-rtems4.12/./prev-isl/.libs' --cache-file=.././config.cache --srcdir=/home/EB/sebastian_h/archive/gcc-git/newlib/libc 

--
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber@embedded-brains.de
PGP     : Public key available on request.

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