Qt Creator compile error when executing step "make", -fno-stack-limit

Question

Having some problems compiling a project, project was provided by the school and even if I don't change anything I get these errors while compiling in Qt Creator:

clang: error: unknown argument: '-fno-stack-limit'
clang: error: unknown argument: '-fno-stack-limit'
clang: error: unknown argument: '-fno-stack-limit'
clang: error: unknown argument: '-fno-stack-limit'
make: clang: error: unknown argument: '-fno-stack-limit'
*** [adapter.o] Error 1
make: *** Waiting for unfinished jobs....
clang: error: unknown argument: '-fno-stack-limit'
make: *** [trailblazer.o] Error 1
make: *** [types.o] Error 1
make: *** [trailblazergui.o] Error 1
make: *** [BasicGraph.o] Error 1
clang: error: unknown argument: '-fno-stack-limit'
make: *** [console.o] Error 1
clang: error: unknown argument: '-fno-stack-limit'
make: *** [costs.o] Error 1
make: *** [direction.o] Error 1
22:27:18: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project Trailblazer (kit: Desktop Qt 5.13.0 clang 64bit)
When executing step "Make"

Any ideas on what could be wrong? Running on Mac OS

The error message says it. Your compiler (clang) does not recognize `-fno-stack-limit` flag. It seems like your school folks use GCC. The flag is probably set in your `.pro` file. You can try to remove it. If you really need a huge stack then you can look for questions on how to increase stack limit on Mac OS with clang. — mip, Dec 07 '19 at 23:17
After googling a while, it seems to me that there is no such option for Clang. (I don't know such option for MSVC++, so I wouldn't wonder.) Instead, you can increase the default stack size: [SO: How do I increase the stack size when compiling with Clang on OS X?](https://stackoverflow.com/a/18912422/7478597) — Scheff's Cat, Dec 09 '19 at 10:53

score 1 · Accepted Answer · answered Dec 09 '19 at 20:22

The clang compiler doesn't support '-fno-stack-limit'. But you can get the same effect by passing the --stack flag to GNU linker:

   --stack reserve
   --stack reserve,commit
       Specify the number of bytes of memory to reserve (and optionally commit) to be used as stack for this program.  The default is 2MB
       reserved, 4K committed.  [This option is specific to the i386 PE targeted port of the linker]

For Mac OS default linker you can pass -stack_size:

-stack_size size
    Specifies the maximum stack size for the main thread in a program. Without this
    option a program has a 8MB stack. The argument size is a hexadecimal number with
    an optional leading 0x. The size should be an even multiple of 4KB, that is the
    last three hexadecimal digits should be zero.

to pass a flag to linker you can use -Wl. e.g.,

clang++ -Wl,-stack_size -Wl,0x1000000 -o test test.cpp

Where 0x1000000 = size of stack 16MB.

Qt Creator compile error when executing step "make", -fno-stack-limit

1 Answers1