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Build gnat for cross building from x86_64 to armv7 with OS runtime.

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Subject: Build gnat for cross building from x86_64 to armv7 with OS runtime.
From: kostirya@gmail.com (Nick Kostyria)
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by: Nick Kostyria - Thu, 27 Jul 2023 08:03 UTC

Hello.
I have gcc12 and gnat12 on x86_64 freebsd.
I succeed build gnat for cross building to i386 and to aarch64.
But I got error when i try to build for armv7.
I do not want to build for SMT32 or other board on arm.
I want to build for cross building to freebsd on armv7.

Received error is:

/usr/ports/devel/freebsd-gnat12/work-armv7/.build/./gcc/xgcc -B/usr/ports/devel/freebsd-gnat12/work-armv7/.build/./gcc/ -B/usr/local/gnat12/armv7-gnueabi-freebsd13.1/bin/ -B/usr/local/gnat12/armv7-gnueabi-freebsd13.1/lib/ -isystem /usr/local/gnat12/armv7-gnueabi-freebsd13.1/include -isystem /usr/local/gnat12/armv7-gnueabi-freebsd13.1/sys-include --sysroot=/usr/local/freebsd-sysroot/armv7 -c -g -O2 -W -Wall -gnatpg -nostdinc a-assert.adb -o a-assert.o
fatal error, run-time library not installed correctly
cannot locate file system.ads
compilation abandoned
gmake[7]: *** [../gcc-interface/Makefile:301: a-assert.o] Error 1
gmake[7]: Leaving directory '/usr/ports/devel/freebsd-gnat12/work-armv7/.build/gcc/ada/rts'

I suspect that there's a try to build with STM32 runtime. It's true?
`

What should I add to the configuration to get arm OS runtime, like with aarch64?

../configure --target=armv7-gnueabi-freebsd13.1 --disable-nls --enable-languages="c,ada" \
--enable-gnu-indirect-function \
--with-sysroot="/" \
--with-build-sysroot="/usr/local/freebsd-sysroot/armv7" \
--with-as=/usr/local/bin/arm-gnueabi-freebsd13.1-as \
--with-ld=/usr/local/bin/arm-gnueabi-freebsd13.1-ld \
--enable-threads=posix \
--disable-libquadmath \
--enable-host-shared \
--disable-libmudflap \
--with-system-zlib \
--disable-libgomp \
--disable-libssp \
--enable-libada \
--without-zstd

Thanks.

Subject	Author
Build gnat for cross building from x86_64 to armv7 with OS runtime.	Nick Kostyria