Hi,
I'm trying (again) to work out how to build a GNAT cross compiler with
no runtime, but with the tools.
Firstly, I'd just like to ask, is this supposed to be possible?
If it is possible, why is it so hard/impossible and why will nobody from
AdaCore answer my questions regarding it?
I'm wanting to start development on my kernel and would prefer not to
use a hacky way to do it.
I'm currently using binutils-2.21, newlib-1.19.0, gcc-4.5.2, latest
mpfr, bmp, mpc and am trying to target arm-none-eabi to start with.
I've firstly build binutils, then gcc C compiler, then newlib, now i'm
trying to build C + Ada. I need the C stuff with newlib so I can build
u-boot, but when I get to Ada, I don't need it at all.
I'm configuring the second gcc build with:
../../../src/gcc-$GCC_VERSION/configure \
--prefix=$PREFIX \
--target=$1 \
$2 \
--enable-multilib \
--with-newlib \
--with-headers=../../../src/newlib-$NEWLIB_VERSION/newlib/libc/include \
--disable-nls \
--disable-shared \
--disable-threads \
--with-gnu-as \
--with-gnu-ld \
--enable-languages=c,ada \
--disable-libssp \
--disable-libada \
--with-gmp=$GCC_LIBS_PREFIX/gmp \
--with-mpfr=$GCC_LIBS_PREFIX/mpfr \
--with-mpc=$GCC_LIBS_PREFIX/mpc &> log.config.txt
$1 is arm-none-eabi and $2 is the --enable-interworking passed as
parameters to my build function. When I do a "make" it fails around
here:
make[2]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc'
mkdir -p -- ./gnattools
Configuring in ./gnattools
configure: creating cache ./config.cache
checking for a BSD-compatible install... /usr/bin/install -c
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... arm-none-eabi
checking whether ln -s works... yes
checking for x86_64-unknown-linux-gnu-gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
configure: updating cache ./config.cache
configure: creating ./config.status
config.status: creating Makefile
make[2]: Entering directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gnattools'
rm -rf ../gcc/ada/tools
mkdir -p ../gcc/ada/tools
(cd ../gcc/ada/tools; ln
-s ../sdefault.adb ../snames.ads ../snames.adb .)
touch ../gcc/stamp-tools
# gnattools1-re
make -C ../gcc/ada/tools -f ../Makefile \
"CC=gcc" "CFLAGS=-g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes" "LDFLAGS=" "ADAFLAGS=-gnatpg -gnata" "ADA_CFLAGS="
"INCLUDES=-I. -I.. -I../..
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/config
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/../include
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc"
"ADA_INCLUDES=-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada"
"exeext="
"fsrcdir=/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc"
"srcdir=/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc"
"GNATMAKE=gnatmake" "GNATLINK=gnatlink" "GNATBIND=gnatbind"
"TOOLSCASE=cross" "LIBGNAT=" INCLUDES="" \
gnatmake-re gnatlink-re
make[3]: Entering directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada/tools'
gcc -c -DCROSS_DIRECTORY_STRUCTURE -DIN_GCC `echo -g -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes |sed -e
's/-pedantic//g' -e 's/-Wtraditional//g'` \
/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/link.c
-o link.o
gcc -c -DCROSS_DIRECTORY_STRUCTURE -DIN_GCC `echo -g -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes |sed -e
's/-pedantic//g' -e 's/-Wtraditional//g'` \
-I. -I.. -I../..
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/../include
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc \
/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/targext.c
-o targext.o
gnatmake -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada -u
sdefault --GCC="gcc "
gcc -c -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada
sdefault.adb
gnatmake -c -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada gnatmake
--GCC="gcc -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -gnatpg -gnata"
gcc -c -I./ -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada -g -O2 -W
-Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -gnatpg
-gnata
-I- /home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/gnatmake.adb
gcc -c -I./ -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada -g -O2 -W
-Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -gnatpg
-gnata
-I- /home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/gnatvsn.adb
gcc -c -I./ -I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/../adainclude
-I/usr/lib/gcc/x86_64-linux-gnu/4.4.3/adalib/ -I.
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada -g -O2 -W
-Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -gnatpg
-gnata
-I- /home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/make.adb
make.adb:7489:07: "Create_Temp_Output_File" is undefined
gnatmake:
"/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada/make.adb"
compilation error
make[3]: *** [gnatmake-re] Error 4
make[3]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada/tools'
make[2]: *** [gnattools-cross] Error 2
make[2]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gnattools'
make[1]: *** [all-gnattools] Error 2
make[1]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2'
make: *** [all] Error 2
It's almost as if it should be building a native rts for gnattools.
To get this far, I commented out the following from configure:
#if test "${ENABLE_LIBADA}" != "yes" ; then
# noconfigdirs="$noconfigdirs gnattools"
#fi
Which according to this
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19959#c14 is totally wrong
and Arno's recommendation of using make -C gcc gnattools fails with:
$ make -C gcc gnattools
make: Entering directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc'
make: *** No rule to make target `gnattools'. Stop.
make: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc'
Now, trying again with normal untouched source (i.e. the configure lines
put back in) and then configured in the same way as above, but without
the --disable-libada flag passed, fails as follows:
test -f stamp-libada || \
make -C ../.././gcc/ada "MAKEOVERRIDES=" "LDFLAGS=" "LN_S=ln -s"
"SHELL=/bin/sh" "GNATLIBFLAGS=-W -Wall -gnatpg " "GNATLIBCFLAGS=-g -O2 "
"GNATLIBCFLA
GS_FOR_C=-g -O2 -fno-inline -Wno-missing-prototypes -fexceptions
-DIN_RTS -DHAVE_GETIPINFO " "TARGET_LIBGCC2_CFLAGS=-fno-inline
-Wno-missing-prototypes" "THRE
AD_KIND=native" "TRACE=no" "MULTISUBDIR="
"libsubdir=/opt/tamp-cross/lib/gcc/arm-none-eabi/4.5.2" "objext=.o"
"prefix=/opt/tamp-cross" "exeext=.exeext.should.
not.be.used " 'CC=the.host.compiler.should.not.be.needed'
"GCC_FOR_TARGET=/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/./gcc/xgcc
-B/home/l
aguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/./gcc/
-B/opt/tamp-cross/arm-none-eabi/bin/
-B/opt/tamp-cross/arm-none-eabi/lib/ -isystem /opt/tamp-c
ross/arm-none-eabi/include
-isystem /opt/tamp-cross/arm-none-eabi/sys-include " "CFLAGS=-g -O2 -W
-Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-protot
ypes" gnatlib \
&& touch stamp-libada
make[3]: Entering directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada'
make -C rts \
CC="`echo
\"/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/./gcc/xgcc
-B/home/laguest/src/mine/tamp/thirdparty/build/arm-none
-eabi/gcc2/./gcc/ -B/opt/tamp-cross/arm-none-eabi/bin/
-B/opt/tamp-cross/arm-none-eabi/lib/
-isystem /opt/tamp-cross/arm-none-eabi/include -isystem /opt/tamp-
cross/arm-none-eabi/sys-include \" \
| sed -e 's,\./xgcc,../../xgcc,' -e 's,-B
\./,-B../../,'`" \
INCLUDES="-I. -I.. -I../..
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5
.2/gcc/../include
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc -I./../.." \
CFLAGS="-g -O2 -fno-inline -Wno-missing-prototypes
-fexceptions -DIN_RTS -DHAVE_GETIPINFO " \
FORCE_DEBUG_ADAFLAGS="-g" \
srcdir=/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc \
-f ../Makefile adadecode.o adaint.o argv.o cio.o
cstreams.o ctrl_c.o errno.o exit.o env.o raise.o sysdep.o aux-io.o
init.o initialize.o seh_in
it.o cal.o arit64.o final.o tracebak.o expect.o mkdir.o socket.o
targext.o
make[4]: Entering directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada/rts'
/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/./gcc/xgcc
-B/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/./gcc/
-B/opt/tam
p-cross/arm-none-eabi/bin/ -B/opt/tamp-cross/arm-none-eabi/lib/
-isystem /opt/tamp-cross/arm-none-eabi/include
-isystem /opt/tamp-cross/arm-none-eabi/sys-incl
ude -c -DCROSS_DIRECTORY_STRUCTURE -DIN_GCC `echo -g -O2 -fno-inline
-Wno-missing-prototypes -fexceptions -DIN_RTS -DHAVE_GETIPINFO |sed -e
's/-pedantic/
/g' -e 's/-Wtraditional//g'` \
-I. -I.. -I../..
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/ada
-I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc/../includ
e -I/home/laguest/src/mine/tamp/thirdparty/src/gcc-4.5.2/gcc -I./../..
adadecode.c -o adadecode.o
In file included
from /opt/tamp-cross/arm-none-eabi/include/dirent.h:6:0,
from adaint.h:39,
from adadecode.c:45:
/opt/tamp-cross/arm-none-eabi/include/sys/dirent.h:10:2: error: #error
"<dirent.h> not supported"
In file included from adadecode.c:45:0:
adaint.h:137:14: error: expected '=', ',', ';', 'asm' or '__attribute__'
before '*' token
adaint.h:138:57: error: expected ')' before '*' token
adaint.h:139:57: error: expected ')' before '*' token
make[4]: *** [adadecode.o] Error 1
make[4]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada/rts'
make[3]: *** [gnatlib] Error 2
make[3]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/gcc/ada'
make[2]: *** [gnatlib-plain] Error 2
make[2]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2/arm-none-eabi/libada'
make[1]: *** [all-target-libada] Error 2
make[1]: Leaving directory
`/home/laguest/src/mine/tamp/thirdparty/build/arm-none-eabi/gcc2'
make: *** [all] Error 2
Which is fairy enough as I don't have a C lib that supports dirent.h and
I essentially, don't want a RTS as I'll be creating a minimal one
outside of the GCC tree.
Now, for completeness, if I configure the normal source with the
--disable-libada flag, I can compile and build, but I do not get the
gnattools, because they seem to be dependent on libgnat.
Ideally, I'd like to be able to build what I need, there must be a way.
Please don't tell me to look at how RTEMS or MarteOS does it, they don't
help at all. I've already looked.
Thanks,
Luke.
