1125902b6SBryan Drewery# $FreeBSD$ 2125902b6SBryan Drewery 3125902b6SBryan Drewery# Setup variables for the linker. 4125902b6SBryan Drewery# 5125902b6SBryan Drewery# LINKER_TYPE is the major type of linker. Currently binutils and lld support 6125902b6SBryan Drewery# automatic detection. 7125902b6SBryan Drewery# 8125902b6SBryan Drewery# LINKER_VERSION is a numeric constant equal to: 9125902b6SBryan Drewery# major * 10000 + minor * 100 + tiny 10125902b6SBryan Drewery# It too can be overridden on the command line. 11125902b6SBryan Drewery# 1208154765SBryan Drewery# These variables with an X_ prefix will also be provided if XLD is set. 1308154765SBryan Drewery# 14125902b6SBryan Drewery# This file may be included multiple times, but only has effect the first time. 15125902b6SBryan Drewery# 16125902b6SBryan Drewery 17125902b6SBryan Drewery.if !target(__<bsd.linker.mk>__) 18125902b6SBryan Drewery__<bsd.linker.mk>__: 19125902b6SBryan Drewery 2008154765SBryan Drewery.for ld X_ in LD $${_empty_var_} XLD X_ 2108154765SBryan Drewery.if ${ld} == "LD" || !empty(XLD) 22*19fad655SBryan Drewery# Try to import LINKER_TYPE and LINKER_VERSION from parent make. 23*19fad655SBryan Drewery# The value is only used/exported for the same environment that impacts 24*19fad655SBryan Drewery# LD and LINKER_* settings here. 25*19fad655SBryan Drewery_exported_vars= ${X_}LINKER_TYPE ${X_}LINKER_VERSION 26*19fad655SBryan Drewery${X_}_ld_hash= ${${ld}}${MACHINE}${PATH} 27*19fad655SBryan Drewery${X_}_ld_hash:= ${${X_}_ld_hash:hash} 28*19fad655SBryan Drewery# Only import if none of the vars are set somehow else. 29*19fad655SBryan Drewery_can_export= yes 30*19fad655SBryan Drewery.for var in ${_exported_vars} 31*19fad655SBryan Drewery.if defined(${var}) 32*19fad655SBryan Drewery_can_export= no 33*19fad655SBryan Drewery.endif 34*19fad655SBryan Drewery.endfor 35*19fad655SBryan Drewery.if ${_can_export} == yes 36*19fad655SBryan Drewery.for var in ${_exported_vars} 37*19fad655SBryan Drewery.if defined(${var}.${${X_}_ld_hash}) 38*19fad655SBryan Drewery${var}= ${${var}.${${X_}_ld_hash}} 39*19fad655SBryan Drewery.endif 40*19fad655SBryan Drewery.endfor 41*19fad655SBryan Drewery.endif 42*19fad655SBryan Drewery 4308154765SBryan Drewery.if ${ld} == "LD" || (${ld} == "XLD" && ${XLD} != ${LD}) 4408154765SBryan Drewery 4508154765SBryan Drewery_ld_version!= ${${ld}} --version 2>/dev/null | head -n 1 || echo none 46125902b6SBryan Drewery.if ${_ld_version} == "none" 4708154765SBryan Drewery.error Unable to determine linker type from ${ld}=${${ld}} 48125902b6SBryan Drewery.endif 49125902b6SBryan Drewery.if ${_ld_version:[1..2]} == "GNU ld" 5008154765SBryan Drewery${X_}LINKER_TYPE= binutils 51125902b6SBryan Drewery_v= ${_ld_version:[3]} 52125902b6SBryan Drewery.elif ${_ld_version:[1]} == "LLD" 5308154765SBryan Drewery${X_}LINKER_TYPE= lld 54125902b6SBryan Drewery_v= ${_ld_version:[2]} 55125902b6SBryan Drewery.else 5608154765SBryan Drewery.error Unknown linker from ${ld}=${${ld}}: ${_ld_version} 57125902b6SBryan Drewery.endif 5808154765SBryan Drewery${X_}LINKER_VERSION!= echo "${_v:M[1-9].[0-9]*}" | \ 5908154765SBryan Drewery awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' 6008154765SBryan Drewery.undef _ld_version 6108154765SBryan Drewery.undef _v 6208154765SBryan Drewery.endif # ${ld} == "LD" || (${ld} == "XLD" && ${XLD} != ${LD}) 6308154765SBryan Drewery 64*19fad655SBryan Drewery# Export the values so sub-makes don't have to look them up again, using the 65*19fad655SBryan Drewery# hash key computed above. 66*19fad655SBryan Drewery.for var in ${_exported_vars} 67*19fad655SBryan Drewery${var}.${${X_}_ld_hash}:= ${${var}} 68*19fad655SBryan Drewery.export-env ${var}.${${X_}_ld_hash} 69*19fad655SBryan Drewery.undef ${var}.${${X_}_ld_hash} 70*19fad655SBryan Drewery.endfor 71*19fad655SBryan Drewery 7208154765SBryan Drewery.endif # ${ld} == "LD" || !empty(XLD) 7308154765SBryan Drewery.endfor # .for ld in LD XLD 7408154765SBryan Drewery 75125902b6SBryan Drewery 76125902b6SBryan Drewery.endif # !target(__<bsd.linker.mk>__) 77