## www/chromium Makefile.local [contrib]

##
## Synopsis: Using a simple _WRAP_TOOL handling - lazily analogous onto 
## pkgsrc cwrappers - for local cc, c++ cmds. These would match cmds under 
## base system pathanmes. In each being provided via CC and CXX, these cmds
## may furthermore be locally configured to use ccache. As such, these 
## cmds may not easily be provided with a modification onto BINARY_ALIAS 
##
## Otherwise, using BINARY_ALIAS for defining generic toolchain cmds.
##
##
## Rationale: Ensure that the toolchain variables configured in the build
## environment will be used to provide any generic toolchain cmds used in
## the build
##
## A more specific rationale: Ensure that ccache will be used, throughout 
## the build, when CC and/or CXX represents a ccache wrapper
##
## Possible side effects: May serve to ensure a libtool-like configuration
## for build
##
##
## Assumptions
##
## - RM => rm -f
##
## - This cannot not be used when building ports-mgmt/pkg, if without
##   modification, due to an early binding of BINARY_LINKDIR in this file
##
##
## Further remarks
##
## - A similar build configuration may be of use when building the ports
##   devel/chromium-gn, www/qt5-webtools (if using GN for chromium), ...
##
## - This does not provide any modification onto GN_ARGS such as
##   for quoted GN cc, cxx, ld, nm, ar, and possibly readelf args. 
##   Those arguments may not appear to be used in most of the build, 
##   but may be provided to gn regardless.
##

.if empty(_WRAP_TOOL:Mcc=*)
_WRAP_TOOL+=	cc=${CC:Q}
.endif

.if empty(_WRAP_TOOL:Mc++=*)
_WRAP_TOOL+=	c++=${CXX:Q}
.endif


##
## Bind BINARY_LINKDIR early, before bsd.port.mk is evaluated
##
## This may serve to ensure that a tgt can be defined onto
## BINARY_LINKDIR in this file
##
.ifndef BINARY_LINKDIR
BINARY_LINKDIR!=	${MAKE} -C ${PORTSDIR:U/usr/ports}/ports-mgmt/pkg -V BINARY_LINKDIR
.export BINARY_LINKDIR
. ifdef MK_VERBOSE
.  info Using BINARY_LINKDIR ${BINARY_LINKDIR}
. endif
.endif


##
## trivial cc, cxx wrappers - cf. pkgsrc
##
.for .cmd. .tool. in ${_WRAP_TOOL:C/=/ /}

. ifdef MK_VERBOSE
.  info Wrapping ${.cmd.} => ${.tool.}
. endif

${BINARY_LINKDIR}/${.cmd.}: ${BINARY_LINKDIR} .EXEC
	@${RM} ${BINARY_LINKDIR}/${.cmd.}
	@${ECHO} '#!${SH}' > ${BINARY_LINKDIR}/${.cmd.}
	@${ECHO} 'exec ${.tool.} "$$@"' >> ${BINARY_LINKDIR}/${.cmd.}
	@${CHMOD} +x ${BINARY_LINKDIR}/${.cmd.}

_WRAP_TOOL_TGT+=	${BINARY_LINKDIR}/${.cmd.}

_PATCH_REAL_SEQ+=	${BINARY_LINKDIR}/${.cmd.}
.endfor

##
## utility tgt for purpose of build configuration testing
##
wrap-tools: ${_WRAP_TOOL_TGT} .PHONY


##
## also modify BINARY_ALIAS locally
##
.for .CMD. in CPP LD AR NM OBJCOPY OBJDUMP SIZE STRINGS RANLIB AS TBLGEN READELF
. if empty(BINARY_ALIAS:M${.CMD.:tl}=*)
BINARY_ALIAS+=	${.CMD.:tl}=${${.CMD.}:Q}
.  ifdef MK_VERBOSE
.   info Alias ${.CMD.:tl} => ${${.CMD.}:Q}
.  endif
. endif
.endfor