gnatlink vs. -mthumb -march=armv7-a+simd -mfloat-abi=hard

[Sebastian Huber]

Hello,

I test currently the Ada support for RTEMS in GCC 12. We have a -mthumb 
-march=armv7-a+simd -mfloat-abi=hard multilib for which the Ada RTS is 
built like this:

make[4]: Entering directory 
'/tmp/sh/b-gcc-arm-rtems6/arm-rtems6/thumb/armv7-a+simd/hard/libada'
make -C ../../../../.././gcc/ada "MAKEOVERRIDES=" "LDFLAGS=-mthumb 
-march=armv7-a+simd -mfloat-abi=hard" "LN_S=ln -s" "SHELL=/bin/sh" 
"GNATLIBFLAGS=-W -Wall -gnatpg -nostdinc -mthumb -march=armv7-a+simd 
-mfloat-abi=hard" "GNATLIBCFLAGS=-g -O2 -mthumb -march=armv7-a+simd 
-mfloat-abi=hard" "GNATLIBCFLAGS_FOR_C=-W -Wall -g -O2 -g -O2 
-fexceptions -DIN_RTS -DHAVE_GETIPINFO  -mthumb -march=armv7-a+simd 
-mfloat-abi=hard" "PICFLAG_FOR_TARGET=-fPIC" "THREAD_KIND=native" 
"TRACE=no" "MULTISUBDIR=/thumb/armv7-a+simd/hard" 
"libsubdir=/tmp/sh/i-arm-rtems6/lib64/gcc/arm-rtems6/12.0.1/thumb/armv7-a+simd/hard" 
"toolexeclibdir=/tmp/sh/i-arm-rtems6/lib64/gcc/arm-rtems6/12.0.1/thumb/armv7-a+simd/hard/adalib" 
"objext=.o" "prefix=/tmp/sh/i-arm-rtems6" 
"exeext=.exeext.should.not.be.used " 
'CC=the.host.compiler.should.not.be.needed' 
"GCC_FOR_TARGET=/tmp/sh/b-gcc-arm-rtems6/./gcc/xgcc 
-B/tmp/sh/b-gcc-arm-rtems6/./gcc/ -nostdinc 
-B/tmp/sh/b-gcc-arm-rtems6/arm-rtems6/newlib/ -isystem 
/tmp/sh/b-gcc-arm-rtems6/arm-rtems6/newlib/targ-include -isystem 
/home/EB/sebastian_h/src/gcc/newlib/libc/include 
-B/tmp/sh/i-arm-rtems6/arm-rtems6/bin/ 
-B/tmp/sh/i-arm-rtems6/arm-rtems6/lib/ -isystem 
/tmp/sh/i-arm-rtems6/arm-rtems6/include -isystem 
/tmp/sh/i-arm-rtems6/arm-rtems6/sys-include   " "CFLAGS=-g -O2  -mthumb 
-march=armv7-a+simd -mfloat-abi=hard" ./bldtools/oscons/xoscons

When I try to link a test application I get this error:

arm-rtems7-gnatlink 
/tmp/sh/b-rtems/arm/realview_pbx_a9_qemu/testsuites/ada/samples/nsecs/nsecs.ali 
testsuites/ada/samples/nsecs/init.o -qnolinkcmds -T 
linkcmds.realview_pbx_a9_qemu -Wl,--wrap=printf -Wl,--wrap=puts 
-Wl,--wrap=putchar -L. -lrtemscpu -lrtemsbsp -lrtemstest -qrtems -mthumb 
-march=armv7-a+simd -mfloat-abi=hard -mtune=cortex-a9 -Wl,--gc-sections 
-L/home/EB/sebastian_h/src/rtems/bsps/arm/shared/start 
-L/home/EB/sebastian_h/src/rtems/bsps/arm/realview-pbx-a9/start -o 
/tmp/sh/b-rtems/arm/realview_pbx_a9_qemu/testsuites/ada/ada_nsecs.exe
/opt/rtems/7/lib/gcc/arm-rtems7/12.0.1/thumb/armv7-a+simd/hard/adainclude/s-secsta.ads:288:9: 
sorry, unimplemented: Thumb-1 'hard-float' VFP ABI

The s-secsta.ads seems to be from the right multilib directory 
(Thumb-2), however, I get a sorry message related to Thumb-1?

-- 
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Herr Sebastian HUBER
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Germany
email: sebastian.huber@embedded-brains.de
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