if [ -z "$first_time_icc_check" ]; then

			first_time_icc_check=no

			if [ $cc_version -lt 90 ]; then

				log 1 "WARNING: you seem to be using very old version of ICC"

				log 1 "WARNING: OpenTTD hasn't been tested with this version"

				sleep 5

			elif [ $cc_version -lt 120 ]; then

				log 1 "WARNING: you seem to be using unsupported ICC version"

				log 1 "WARNING: ICC older than 12.0 is known to fail to compile OpenTTD"

				sleep 5

			fi

		fi

		flags="$flags -Wall"

		# remark #111: statement is unreachable

		flags="$flags -wd111"

		# remark #181: argument is incompatible with corresponding format string conversion

		# ICC is very picky about signedness of operands, warnings provided by GCC are enough

		flags="$flags -wd181"

		# remark #271: trailing comma is nonstandard

		flags="$flags -wd271"

		# remark #280: selector expression is constant

		flags="$flags -wd280"

		# remark #304: access control not specified ("public" by default)

		flags="$flags -wd304"

		# remark #383: value copied to temporary, reference to temporary used

		flags="$flags -wd383"

		# remark #444: destructor for base class ... is not virtual

		flags="$flags -wd444"

		# remark #593: variable ... was set but never used

		flags="$flags -wd593"

		# warning #654: overloaded virtual function ... is only partially overridden in class ...

		flags="$flags -wd654"

		# remark #810: conversion from ... to ... may lose significant bits

		flags="$flags -wd810"

		# remark #869: parameter ... was never referenced

		flags="$flags -wd869"

		# warning #873: function ... ::operator new ... has no corresponding operator delete ...

		flags="$flags -wd873"

		# remark #981: operands are evaluated in unspecified order

		flags="$flags -wd981"

		# remark #1418: external function definition with no prior declaration

		flags="$flags -wd1418"

		# remark #1419: external declaration in primary source file

		flags="$flags -wd1419"

		# remark #1572: floating-point equality and inequality

		flags="$flags -wd1572"

		# remark #1599: declaration hides variable/parameter ...

		flags="$flags -wd1599"

		# remark #1720: function ... ::operator new ... has no corresponding member operator delete ...

		flags="$flags -wd1720"

		if [ $cc_version -lt 110 ]; then

			# warns about system headers with recent glibc:

			# warning #1292: attribute "__nonnull__" ignored

			flags="$flags -wd1292"

		fi

		if [ $cc_version -ge 100 ]; then

			# warning #1899: multicharacter character literal (potential portability problem)

			flags="$flags -wd1899"

			# vec report defaults to telling where it did loop vectorisation, which is not very important

			flags="$flags -vec-report=0 "

			# remark #2259: non-pointer conversion from ... to ... may lose significant bits

			flags="$flags -wd2259"