Base on The patch from Arch[1] but better suited to Gentoo needs.

[1]: https://gitlab.archlinux.org/archlinux/packaging/packages/libnvidia-container/-/raw/a642a3cc488862a8483075ee63f8a8c470860149/fix-makefile.patch
diff --git a/Makefile b/Makefile
index 6fb6976..c6f26d3 100644
--- a/Makefile
+++ b/Makefile
@@ -18,18 +18,16 @@
 ##### Global variables #####
 
 WITH_NVCGO   ?= yes
-WITH_LIBELF  ?= no
-WITH_TIRPC   ?= no
+WITH_TIRPC   ?= yes
 WITH_SECCOMP ?= yes
 
 ##### Global definitions #####
 
-export prefix      = /usr/local
+export prefix     ?= /usr
 export exec_prefix = $(prefix)
 export bindir      = $(exec_prefix)/bin
-export libdir      = $(exec_prefix)/lib
+export libdir     ?= $(exec_prefix)/lib64
 export docdir      = $(prefix)/share/doc
-export libdbgdir   = $(prefix)/lib/debug$(libdir)
 export includedir  = $(prefix)/include
 export pkgconfdir  = $(libdir)/pkgconfig
 
@@ -158,20 +156,17 @@ ifeq ($(WITH_NVCGO), yes)
 LIB_CPPFLAGS       += -DWITH_NVCGO
 LIB_LDLIBS_SHARED  += -lpthread
 endif
-ifeq ($(WITH_LIBELF), yes)
+# Build with system libelf unconditionally
 LIB_CPPFLAGS       += -DWITH_LIBELF
 LIB_LDLIBS_SHARED  += -lelf
-else
-LIB_LDLIBS_STATIC  += -l:libelf.a
-endif
 ifeq ($(WITH_TIRPC), yes)
-LIB_CPPFLAGS       += -isystem $(DEPS_DIR)$(includedir)/tirpc -DWITH_TIRPC
-LIB_LDLIBS_STATIC  += -l:libtirpc.a
-LIB_LDLIBS_SHARED  += -lpthread
+LIB_CPPFLAGS       += -isystem $(includedir)/tirpc -DWITH_TIRPC
+# dynamically link with system tirpc
+LIB_LDLIBS_SHARED  += -lpthread -ltirpc
 endif
 ifeq ($(WITH_SECCOMP), yes)
-LIB_CPPFLAGS       += -DWITH_SECCOMP $(shell pkg-config --cflags libseccomp)
-LIB_LDLIBS_SHARED  += $(shell pkg-config --libs libseccomp)
+LIB_CPPFLAGS       += -DWITH_SECCOMP $(shell $(PKG_CONFIG) --cflags libseccomp)
+LIB_LDLIBS_SHARED  += $(shell $(PKG_CONFIG) --libs libseccomp)
 endif
 LIB_CPPFLAGS       += $(CPPFLAGS)
 LIB_CFLAGS         += $(CFLAGS)
@@ -222,22 +217,14 @@ $(BIN_OBJS): %.o: %.c | shared
 -include $(DEPENDENCIES)
 
 $(LIB_SHARED): $(LIB_OBJS)
-	$(MKDIR) -p $(DEBUG_DIR)
 	$(CC) $(LIB_CFLAGS) $(LIB_CPPFLAGS) $(LIB_LDFLAGS) $(OUTPUT_OPTION) $^ $(LIB_SCRIPT) $(LIB_LDLIBS)
-	$(OBJCPY) --only-keep-debug $@ $(LIB_SONAME)
-	$(OBJCPY) --add-gnu-debuglink=$(LIB_SONAME) $@
-	$(MV) $(LIB_SONAME) $(DEBUG_DIR)
-	$(STRIP) --strip-unneeded -R .comment $@
 
 $(LIB_STATIC_OBJ): $(LIB_OBJS)
 	# FIXME Handle user-defined LDFLAGS and LDLIBS
 	$(LD) -d -r --exclude-libs ALL -L$(DEPS_DIR)$(libdir) $(OUTPUT_OPTION) $^ $(LIB_LDLIBS_STATIC)
-	$(OBJCPY) --localize-hidden $@
-	$(STRIP) --strip-unneeded -R .comment $@
 
 $(BIN_NAME): $(BIN_OBJS)
 	$(CC) $(BIN_CFLAGS) $(BIN_CPPFLAGS) $(BIN_LDFLAGS) $(OUTPUT_OPTION) $^ $(BIN_SCRIPT) $(BIN_LDLIBS)
-	$(STRIP) --strip-unneeded -R .comment $@
 
 ##### Public rules #####
 
@@ -262,15 +249,9 @@ deps: $(LIB_RPC_SRCS) $(BUILD_DEFS)
 ifeq ($(WITH_NVCGO), yes)
 	$(MAKE) -f $(MAKE_DIR)/nvcgo.mk DESTDIR=$(DEPS_DIR) MAJOR=$(MAJOR) VERSION=$(VERSION) LIB_NAME=$(LIBGO_NAME) install
 endif
-ifeq ($(WITH_LIBELF), no)
-	$(MAKE) -f $(MAKE_DIR)/elftoolchain.mk DESTDIR=$(DEPS_DIR) install
-endif
-ifeq ($(WITH_TIRPC), yes)
-	$(MAKE) -f $(MAKE_DIR)/libtirpc.mk DESTDIR=$(DEPS_DIR) install
-endif
 
 install: all
-	$(INSTALL) -d -m 755 $(addprefix $(DESTDIR),$(includedir) $(bindir) $(libdir) $(docdir) $(libdbgdir) $(pkgconfdir))
+	$(INSTALL) -d -m 755 $(addprefix $(DESTDIR),$(includedir) $(bindir) $(libdir) $(pkgconfdir))
 	# Install header files
 	$(INSTALL) -m 644 $(LIB_INCS) $(DESTDIR)$(includedir)
 	# Install library files
@@ -279,18 +260,18 @@ install: all
 	$(LN) -sf $(LIB_SONAME) $(DESTDIR)$(libdir)/$(LIB_SYMLINK)
 ifeq ($(WITH_NVCGO), yes)
 	$(INSTALL) -m 755 $(DEPS_DIR)$(libdir)/$(LIBGO_SHARED) $(DESTDIR)$(libdir)
+	# FIXME: for some reason ldconfig stopped creating this symlink after applying Arch Linux LDFLAGS
+	$(LN) -sf $(LIBGO_SHARED) $(DESTDIR)$(libdir)/$(LIBGO_SONAME)
 	$(LN) -sf $(LIBGO_SONAME) $(DESTDIR)$(libdir)/$(LIBGO_SYMLINK)
 endif
 	$(LDCONFIG) -n $(DESTDIR)$(libdir)
-	# Install debugging symbols
-	$(INSTALL) -m 644 $(DEBUG_DIR)/$(LIB_SONAME) $(DESTDIR)$(libdbgdir)
 	# Install configuration files
 	$(MAKE_DIR)/$(LIB_PKGCFG).in "$(strip $(VERSION))" "$(strip $(LIB_LDLIBS_SHARED))" > $(DESTDIR)$(pkgconfdir)/$(LIB_PKGCFG)
 	# Install binary files
 	$(INSTALL) -m 755 $(BIN_NAME) $(DESTDIR)$(bindir)
 	# Install documentation files
-	$(INSTALL) -d -m 755 $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
-	$(INSTALL) -m 644 $(DOC_FILES) $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
+	# $(INSTALL) -d -m 755 $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
+	# $(INSTALL) -m 644 $(DOC_FILES) $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
 
 uninstall:
 	# Uninstall header files
@@ -300,14 +281,12 @@ uninstall:
 ifeq ($(WITH_NVCGO), yes)
 	$(RM) $(addprefix $(DESTDIR)$(libdir)/,$(LIBGO_SHARED) $(LIBGO_SONAME) $(LIBGO_SYMLINK))
 endif
-	# Uninstall debugging symbols
-	$(RM) $(DESTDIR)$(libdbgdir)/$(LIB_SONAME)
 	# Uninstall configuration files
 	$(RM) $(DESTDIR)$(pkgconfdir)/$(LIB_PKGCFG)
 	# Uninstall binary files
 	$(RM) $(DESTDIR)$(bindir)/$(BIN_NAME)
 	# Uninstall documentation files
-	$(RM) -r $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
+	# $(RM) -r $(DESTDIR)$(docdir)/$(LIB_NAME)-$(VERSION)
 
 dist: DESTDIR:=$(DIST_DIR)/$(LIB_NAME)_$(VERSION)$(addprefix -,$(TAG))
 dist: install
@@ -320,12 +299,6 @@ depsclean:
 ifeq ($(WITH_NVCGO), yes)
 	-$(MAKE) -f $(MAKE_DIR)/nvcgo.mk clean
 endif
-ifeq ($(WITH_LIBELF), no)
-	-$(MAKE) -f $(MAKE_DIR)/elftoolchain.mk clean
-endif
-ifeq ($(WITH_TIRPC), yes)
-	-$(MAKE) -f $(MAKE_DIR)/libtirpc.mk clean
-endif
 
 mostlyclean:
 	$(RM) $(LIB_OBJS) $(LIB_STATIC_OBJ) $(BIN_OBJS) $(DEPENDENCIES)
diff --git a/mk/common.mk b/mk/common.mk
index f6d5fbf..594ec08 100644
--- a/mk/common.mk
+++ b/mk/common.mk
@@ -19,6 +19,7 @@ RPCGEN   ?= rpcgen
 BMAKE    ?= MAKEFLAGS= bmake
 DOCKER   ?= docker
 PATCH    ?= patch
+PKG_CONFIG ?= pkg-config
 
 UID      := $(shell id -u)
 GID      := $(shell id -g)
diff --git a/mk/nvcgo.mk b/mk/nvcgo.mk
index 0060f0e..877a72b 100644
--- a/mk/nvcgo.mk
+++ b/mk/nvcgo.mk
@@ -17,7 +17,7 @@ include $(MAKE_DIR)/common.mk
 ##### Source definitions #####
 
 PREFIX         := nvcgo
-SRCS_DIR       := $(DEPS_DIR)/src/$(PREFIX)
+SRCS_DIR       := $(CURDIR)/src/$(PREFIX)
 VERSION        := $(VERSION)
 
 ##### Public rules #####
@@ -25,9 +25,6 @@ VERSION        := $(VERSION)
 .PHONY: all install clean
 
 build:
-	$(RM) -rf $(SRCS_DIR)
-	$(CP) -R $(CURDIR)/src/$(PREFIX) $(SRCS_DIR)
-	$(MAKE) -C $(SRCS_DIR) VERSION=$(VERSION) clean
 	$(MAKE) -C $(SRCS_DIR) VERSION=$(VERSION) build
 
 install: build
diff --git a/mk/nvidia-modprobe.mk b/mk/nvidia-modprobe.mk
index 3406222..339275f 100644
--- a/mk/nvidia-modprobe.mk
+++ b/mk/nvidia-modprobe.mk
@@ -25,7 +25,7 @@ PATCH_FILE     := $(MAKE_DIR)/nvidia-modprobe.patch
 
 ARFLAGS  := -rU
 CPPFLAGS := -D_FORTIFY_SOURCE=2 -DNV_LINUX
-CFLAGS   := -O2 -g -fdata-sections -ffunction-sections -fstack-protector -fno-strict-aliasing -fPIC
+CFLAGS   := -fdata-sections -ffunction-sections -fstack-protector -fno-strict-aliasing -fPIC $(CFLAGS)
 
 ##### Private rules #####
 
diff --git a/src/nvcgo/Makefile b/src/nvcgo/Makefile
index eaee95a..7d5bd74 100644
--- a/src/nvcgo/Makefile
+++ b/src/nvcgo/Makefile
@@ -31,15 +31,15 @@ OBJ_NAME := $(LIB_NAME).so
 HDR_NAME := $(LIB_NAME).h
 CTYPES_H := ctypes.h
 
-CGO_CFLAGS  := -std=gnu11 -O2
-CGO_LDFLAGS := -Wl,--gc-sections -Wl,-s -Wl,-soname,$(LIB_SONAME)
+CGO_CFLAGS  := -std=gnu11 $(CGO_CFLAGS)
+CGO_LDFLAGS := -Wl,--gc-sections -Wl,-soname,$(LIB_SONAME) $(CGO_LDFLAGS)
 
 build: $(OBJ_NAME)
 
 $(OBJ_NAME): $(wildcard $(CURDIR)/*.go) $(wildcard */*.go)
 	export CGO_CFLAGS="$(CGO_CFLAGS)"; \
-	export CGO_LDFLAGS="$(CGO_LDFLAGS)"; \
-	$(GO) build -o $(@) -ldflags "-s -w" -buildmode=c-shared .
+	export CGO_LDFLAGS="-Wl,--gc-sections -Wl,-soname,$(LIB_SONAME) $(CGO_LDFLAGS)"; \
+	$(GO) build -o $(@) -ldflags "$(GO_LDFLAGS)" -buildmode=c-shared .
 
 install: $(OBJ_NAME)
 	$(INSTALL) -d -m 755 $(addprefix $(DESTDIR),$(libdir) $(includedir)/$(PKG_NAME))