None:

commit d6d3db0
Author: Hauke Mehrtens hauke@hauke-m.de
Date: Sat Mar 31 21:28:32 2018 +0200

build: Improve GCC version detection

This now makes sure that the beginning of the version number gets checked
and "4.4.5" will not match was a supported version.
GCC 8 and GCC 9 are now marked as supported, but we probably have to fix
some problems for them.

Closes: FS#1433
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

Introduces a build dependency failure on MacOS:

kevin@Kevins-MBP ~/lede (master) $ make
Checking 'working-make'... ok.
Checking 'case-sensitive-fs'... ok.
Checking 'proper-umask'... ok.
Checking 'gcc'... failed.
Checking 'working-gcc'... ok.
Checking 'g++'... failed.
Checking 'working-g++'... ok.
Checking 'ncurses'... ok.
Checking 'zlib'... ok.
Checking 'perl-thread-queue'... ok.
Checking 'tar'... ok.
Checking 'find'... ok.
Checking 'bash'... ok.
Checking 'patch'... ok.
Checking 'diff'... ok.
Checking 'cp'... ok.
Checking 'seq'... ok.
Checking 'awk'... ok.
Checking 'grep'... ok.
Checking 'getopt'... ok.
Checking 'stat'... ok.
Checking 'unzip'... ok.
Checking 'bzip2'... ok.
Checking 'wget'... ok.
Checking 'perl'... ok.
Checking 'python'... ok.
Checking 'git'... ok.
Checking 'file'... ok.
Checking 'ldconfig-stub'... ok.

Build dependency: Please install the GNU C Compiler (gcc) 4.8 or later cc -dumpversion | grep -E '^(4.[8-9]|[5-9].?)'
Build dependency: Please install the GNU C++ Compiler (g++) 4.8 or later c++ -dumpversion | grep -E '^(4.[8-9]|[5-9].?)'

Prerequisite check failed. Use FORCE=1 to override.
make[2]: *** [staging_dir/host/.prereq-build] Error 1
make[1]: *** [prepare-tmpinfo] Error 2
make: *** [world] Error 2