can not build samples/01-nosys without c++

[hinxx]

I understand, as per #4 (comment) comment, that it should be possible to build first sample even if configuring with --no-cpp.
I can build all samples if I use C++ standard library support, so my toolchain should be OK, I guess.

With the following:

hinxx@obzen ~/Code/circle-stdlib $ ./configure -n -p /home/hinxx/Projects/baremetal-rpi/gcc-arm-9.2-2019.12-x86_64-arm-none-eabi/bin/arm-none-eabi-
hinxx@obzen ~/Code/circle-stdlib $ cat libs/circle/Config.mk 
RASPPI = 1
PREFIX = /home/hinxx/Projects/baremetal-rpi/gcc-arm-9.2-2019.12-x86_64-arm-none-eabi/bin/arm-none-eabi-
FLOAT_ABI = hard
STDLIB_SUPPORT = 2
STDDEF_INCPATH = "/home/hinxx/Projects/baremetal-rpi/gcc-arm-9.2-2019.12-x86_64-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/9.2.1/include"
CFLAGS = -Wno-parentheses 
hinxx@obzen ~/Code/circle-stdlib $ make -j6

I get the following error:

hinxx@obzen ~/Code/circle-stdlib $ make build-samples 
make -C samples/01-nosys
make[1]: Entering directory '/home/hinxx/Code/circle-stdlib/samples/01-nosys'
make[1]: *** No rule to make target 'cstring', needed by 'main.o'.  Stop.
make[1]: Leaving directory '/home/hinxx/Code/circle-stdlib/samples/01-nosys'
Makefile:31: recipe for target 'build-stdlib-samples' failed
make: *** [build-stdlib-samples] Error 2

[hinxx]

I guess it is this line that wants cstring causes this.
Is cstring needed for the strcmp() here , only ?

Maybe using string.h instead makes it more C friendly?

[Stephan Mühlstrasser]

@hinxx You are right that replacing <cstring> with <string.h> fixes the build error when configuring with --no-cpp. I made that change and pushed it to master.

Thanks for the suggestion.