GSoC mandatory step error

[Leul Abiy via Gcc]

Dear Sir/Madam,

I just wanted to ask about the build of gcc. I know it is a required step
before applying to GCC for the GSoC 2025. However, I get an error.

Here is the error:

/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/./prev-gcc/xg++
-B/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/./prev-gcc/
-B/home/stoplight/GitProjects/install_dir/x86_64-pc-linux-gnu/bin/
-nostdinc++
-B/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-B/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
 
-I/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
 
-I/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/include
 -I/home/stoplight/GitProjects/GCC-PROJECT/gcc/libstdc++-v3/libsupc++
-L/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs
-L/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs
 -fno-PIE -c   -O -fno-checking -gtoggle -DIN_GCC-fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-error=narrowing
-Wwrite-strings -Wcast-qual -Wmissing-format-attribute
-Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror  -DHAVE_CONFIG_H
-fno-PIE -I. -I. -I../../../gcc -I../../../gcc/. -I../../../gcc/../include
 -I../../../gcc/../libcpp/include -I../../../gcc/../libcody
 -I../../../gcc/../libdecnumber -I../../../gcc/../libdecnumber/bid
-I../libdecnumber -I../../../gcc/../libbacktrace   -o tree-tailcall.o -MT
tree-tailcall.o -MMD -MP -MF ./.deps/tree-tailcall.TPo
../../../gcc/tree-tailcall.cc
../../../gcc/tree-tailcall.cc: In function ‘void
find_tail_calls(basic_block, tailcall**, bool, bool&, bool)’:
../../../gcc/tree-tailcall.cc:612:27: error: ‘stmt’ may be used
uninitialized [-Werror=maybe-uninitialized]
  612 |   if ((stmt_could_throw_p (cfun, stmt)
  |~~~^~~~
../../../gcc/tree-tailcall.cc:480:11: note: ‘stmt’ was declared here
  480 |   gimple *stmt;
  |   ^~~~
cc1plus: all warnings being treated as errors
make[3]: *** [Makefile:1210: tree-tailcall.o] Error 1
make[3]: Leaving directory
'/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object/gcc'
make[2]: *** [Makefile:5116: all-stage2-gcc] Error 2
make[2]: Leaving directory
'/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object'
make[1]: *** [Makefile:25506: stage2-bubble] Error 2
make[1]: Leaving directory
'/home/stoplight/GitProjects/GCC-PROJECT/gcc/build/object'
make: *** [Makefile:25718: bootstrap] Error 2

ChatGPT doesn't seem to be able to fix it.

I used this command for configure: ../../configure
--prefix=$HOME/GCC-Project/install_dir --enable-languages=c,c++. I did this
in a build/object folder in gcc folder. THe prefix is outside of the gcc
folder. THen I ran make BOOT_CFLAGS='-O' bootstrap. I tried rerunning it
with make CFLAGS="-Wno-error=maybe-uninitialized"
CXXFLAGS="-Wno-error=maybe-uninitialized" BOOT_CFLAGS='-O' bootstrap, but
it didn't work. Please let me know what I should do next. I really want to
work for gcc this summer.

Best Wishes,
Leul Shiferaw

GSoC

[Leul Abiy via Gcc]

Dear Sir/Madam,

I would like to work on the rust frontend for this summer. I am trying to
break down all the steps for the first project in the rust frontend. So far
I plan on creating the visitor class as stated and then using it to deal
with all the different types of errors such as dead code, and unused
variables. Can you go into a little more depth on the project? For example
what is GCC internal infrastructure that is currently being used called? Is
it GIMPLE (according to chatgpt)?

I would also like to maybe test this code with maybe an unused variable and
put a breakpoint in the GIMPLE. This will help me see the workflow better.
Please try to guide me into doing this if possible.

Best Wishes,
Leul Shiferaw