https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111527
--- Comment #10 from Deepthi H <deepadeepthi98 at gmail dot com> --- As suggested, We've updated the patch to place the arguments in a file instead of passing it from an env variable. When the COLLECT_GCC_OPTIONS is <128kb the env variable is used and when the size >128kb arguments will be moved to a file. In Collect2: We copy back the contents of the arguments from file into a buffer and pass it on to the Linker. See the updated patch : With_Files_Workaround_for_GCC_driver_LongArgumentList.patch The output of the example program in descripton section as below: ============================================================= $big_100k_var=$(printf "%0*d" 100000 0) $<<GCC_PATH_With_Fix>>/gcc -c a.c -DA=$big_100k_var -DB=$big_100k_var -v Using built-in specs. COLLECT_GCC=/home/sunild/Gcc_Driver_with_FILE/install/home/Gcc_Driver_with_FILE/build/bin/gcc Target: x86_64-pc-linux-gnu Configured with: ../gcc/configure --prefix=/home/Gcc_Driver_with_FILE/build --enable-languages=c --disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 15.0.0 20240513 (experimental) (GCC) /home/Gcc_Driver_with_FILE/install/home/Gcc_Driver_with_FILE/build/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.0/cc1 -quiet -v -imultiarch x86_64-linux-gnu -iprefix /home/Gcc_Driver_with_FILE/install/home/Gcc_Driver_with_FILE/build/bin/../lib/gcc/x86_64-pc-linux-gnu/15.0.0/ -D A=00000000000000000000000000000000000000000000000 .... .... <<trimmed output>> .... .... 0 -D B=000000000000000000000000000... .... .... <<trimmed output>> .... .... 00000000000 a.c -quiet -dumpbase a.c -dumpbase-ext .c -mtune=generic -march=x86-64 -version -o /tmp/cc7Ox5mH.s ============================================================= Please let us know this solution is ok.
