Compilation error: libc_name_p redeclared

[Pranz]

I get the following error when running make.

In file included from ../../../downloads/gcc-4.9.2/gcc/cp/except.c:1013:0:
cfns.gperf: In function ‘const char* libc_name_p(const char*, unsigned int)’:
cfns.gperf:101:1: error: ‘const char* libc_name_p(const char*, unsigned int)’ redeclared inline with ‘gnu_inline’ attribute
cfns.gperf:26:14: note: ‘const char* libc_name_p(const char*, unsigned int)’ previously declared here
cfns.gperf: At global scope:
cfns.gperf:26:14: warning: inline function ‘const char* libc_name_p(const char*, unsigned int)’ used but never defined
make[3]: *** [Makefile:1058: cp/except.o] Error 1
make[3]: Leaving directory '/home/pranz/gitbuilds/mcb32tools/build/gcc/gcc'
make[2]: *** [Makefile:3967: all-gcc] Error 2
make[2]: Leaving directory '/home/pranz/gitbuilds/mcb32tools/build/gcc'
make[1]: *** [Makefile:229: gcc] Error 2
make[1]: Leaving directory '/home/pranz/gitbuilds/mcb32tools'
make: *** [Makefile:124: all] Error 2

[h4xxel]

Hi! Sorry for taking this long to respond, what operating system and version of gcc is running on your host system?

[helluvamatt]

I'm seeing the same error, using Windows 10 64-bit + MSYS2

$ gcc --version
gcc (GCC) 6.4.0

[h4xxel]

So, it seems there are two options here.
Either patch mcb32-gcc with this patch or update mcb32-gcc to a later version.
Upgrading the gcc version has other benefits as well, such as the better error messages produced by gcc6.

I will investigate this further, but if you want to try a later version of gcc, you can edit the following line in the Makefile:
export BUILD_GCC = gcc-4.9.2
to
export BUILD_GCC = gcc-6.4.0
To my knowledge, this should work but it hasn't been properly tested yet.