make: /usr/local/wine-proton/proton/Makefile:3: Invalid line "ifeq ($(build_name),)", expanded to "ifeq "
make: /usr/local/wine-proton/proton/Makefile:4: warning: Invalid character " " in variable name "shell git symbolic-ref --short HEAD 2>/dev/null"
make: /usr/local/wine-proton/proton/Makefile:5: Invalid line "else"
make: /usr/local/wine-proton/proton/Makefile:7: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:9: Invalid line "ifeq ($(_build_name),)", expanded to "ifeq "
make: /usr/local/wine-proton/proton/Makefile:10: Invalid line " $(error ERROR: Unable to auto-detect build name. Check out a branch or specify with "build_name=...")", expanded to " "
make: /usr/local/wine-proton/proton/Makefile:11: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:14: Unknown modifier ":alnum"
while evaluating variable "shell echo | tr -dc '[" with value ""
make: /usr/local/wine-proton/proton/Makefile:19: warning: Invalid character " " in variable name "shell echo $(build_name) | sed -e 's/ /_/g'"
make: /usr/local/wine-proton/proton/Makefile:22: Invalid line "ifeq ($(build_name),)", expanded to "ifeq "
make: /usr/local/wine-proton/proton/Makefile:23: warning: Invalid character " " in variable name "shell git describe --tags --always --exclude proton-sdk*"
make: /usr/local/wine-proton/proton/Makefile:24: Invalid line "else"
make: /usr/local/wine-proton/proton/Makefile:26: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:28: Invalid line "ifneq ($(module),)", expanded to "ifneq "
make: /usr/local/wine-proton/proton/Makefile:29: warning: Invalid character " " in variable name "findstring .drv,"
make: /usr/local/wine-proton/proton/Makefile:29: Invalid line " ifneq ($(findstring .drv,$(module)),)", expanded to " ifneq "
make: /usr/local/wine-proton/proton/Makefile:31: warning: Invalid character " " in variable name "subst .drv,.so,"
make: /usr/local/wine-proton/proton/Makefile:32: warning: Invalid character " " in variable name "findstring .sys,"
make: /usr/local/wine-proton/proton/Makefile:32: Invalid line " else ifneq ($(findstring .sys,$(module)),)", expanded to " else ifneq "
make: /usr/local/wine-proton/proton/Makefile:34: warning: Invalid character " " in variable name "subst .sys,.so,"
make: /usr/local/wine-proton/proton/Makefile:35: Invalid line " else"
make: /usr/local/wine-proton/proton/Makefile:38: Invalid line " endif"
make: /usr/local/wine-proton/proton/Makefile:39: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:41: Invalid line "ifneq ($(unstripped),)", expanded to "ifneq "
make: /usr/local/wine-proton/proton/Makefile:44: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:49: Invalid line "ifneq ($(protonsdk_version),)", expanded to "ifneq "
make: /usr/local/wine-proton/proton/Makefile:51: Invalid line "else"
make: /usr/local/wine-proton/proton/Makefile:52: Unknown modifier ": -f2"
while evaluating variable "shell grep '^STEAMRT_IMAGE ' Makefile.in|xargs echo|cut -d" with value ""
make: /usr/local/wine-proton/proton/Makefile:53: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:56: Invalid line "ifneq ($(enable_ccache),0)", expanded to "ifneq "
make: /usr/local/wine-proton/proton/Makefile:58: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:61: warning: Invalid character " " in variable name "filter-out all any clean configure deploy downloads help install module proton protonsdk redist,"
make: /usr/local/wine-proton/proton/Makefile:62: warning: Invalid character " " in variable name "filter-out all any clean configure deploy downloads help install module proton protonsdk redist,"
make: /usr/local/wine-proton/proton/Makefile:62: warning: Invalid character " " in variable name "filter-out build/%,$(filter-out all any clean configure deploy downloads help install module proton protonsdk redist,$(MAKECMDGOALS))"
make: /usr/local/wine-proton/proton/Makefile:62: warning: Invalid character " " in variable name "filter-out all any clean configure deploy downloads help install module proton protonsdk redist,"
make: /usr/local/wine-proton/proton/Makefile:118: warning: Invalid character " " in variable name "shell echo | sed -e 's/ /_/g'"
make: /usr/local/wine-proton/proton/Makefile:123: Unknown modifier ": -f2"
while evaluating variable "shell grep '^STEAMRT_IMAGE ' Makefile.in|xargs echo|cut -d" with value ""
while evaluating variable "protonsdk_version" with value "$(shell grep '^STEAMRT_IMAGE ' Makefile.in|xargs echo|cut -d: -f2)"
make: /usr/local/wine-proton/proton/Makefile:123: Invalid line "ifeq ($(protonsdk_version),local)", expanded to "ifeq "
make: /usr/local/wine-proton/proton/Makefile:125: Invalid line "endif"
make: /usr/local/wine-proton/proton/Makefile:167: warning: Invalid character " " in variable name "filter-out all any clean configure deploy downloads help install module proton protonsdk redist,"
make: /usr/local/wine-proton/proton/Makefile:167: warning: Invalid character " " in variable name "filter-out build/%,"
make: Fatal errors encountered -- cannot continue
make: stopped making "install" in /usr/local/wine-proton/proton