Remove Nim support from toolchain

Nim components are best build externally using the Nimble tools and a
Genode SDK.

See https://github.com/ehmry/nim-genode

Fix #2949

repos/base/mk/generic.mk

@@ -102,48 +102,6 @@ CUSTOM_ADA_INCLUDE ?= -I- $(INCLUDES)
 	$(MSG_CONVERT)$@
 	$(VERBOSE)ar p $< $*.0.o > $@
 
-#
-# Compiling Nim source code
-#
-ifneq ($(SRC_NIM),)
-
-ifeq ($(NIM_CPU),)
-$(warning NIM_CPU not defined for any of the following SPECS: $(SPECS))
-else
-
-ifeq ($(wildcard $(NIM)),)
-$(error Nim compiler not found at $(NIM), see the 'tool/tool_chain_nim' script)
-endif
-
-NIM_MAKEFILES := $(foreach X,$(SRC_NIM),$(X).mk)
-
-NIM_ARGS  = --compileOnly --os:genode --cpu:$(NIM_CPU)
-NIM_ARGS += --verbosity:0 --hint[Processing]:off --nimcache:.
-NIM_ARGS += --noCppExceptions
-NIM_ARGS += $(foreach DIR,$(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/include/nim)), --path:$(DIR))
-NIM_ARGS += $(NIM_OPT)
-
-# Generate the C++ sources and compilation info
-#
-# Unfortunately the existing sources must be purged
-# because of comma problems in the JSON recipe
-%.nim.mk: %.nim
-	$(MSG_BUILD)$(basename $@).cpp
-	$(VERBOSE) rm -f stdlib_*.cpp
-	$(VERBOSE)$(NIM) compileToCpp $(NIM_ARGS) $<
-	$(VERBOSE)$(JQ) --raw-output '"SRC_O_NIM +=" + (.link | join(" ")) +"\n" + (.compile | map((.[0] | sub("cpp$$";"o: ") | sub("c$$";"o: ")) + .[0] + "\n\t"+(.[1] | sub("^g\\++";"$$(MSG_COMP)$$@\n\t$$(VERBOSE)$$(NIM_CC)"))) | join("\n"))'  < $(basename $(basename $@)).json > $@
-
-NIM_CC := $(CXX) $(CXX_DEF) $(CC_CXX_OPT) $(INCLUDES) -D__GENODE__
-
-# Parse the generated makefiles
--include $(NIM_MAKEFILES)
-
-# Append the new objects
-SRC_O += $(sort $(SRC_O_NIM))
-
-endif
-endif
-
 #
 # Assembler files that must be preprocessed are fed to the C compiler.
 #

repos/base/mk/global.mk

@@ -54,16 +54,6 @@ GNATMAKE = $(CUSTOM_GNATMAKE)
 HOST_CC  = $(CUSTOM_HOST_CC)
 ADA_CC   = $(CUSTOM_ADA_CC)
 
-#
-# Nim toolchain
-#
-NIM ?= /usr/local/genode-nim/bin/nim
-
-#
-# JSON parsing utility
-#
-JQ ?= jq
-
 #
 # Compiler and Linker options
 #

repos/base/mk/spec/arm.mk

@@ -5,8 +5,6 @@ REP_INC_DIR += include/spec/arm
 
 SPECS += 32bit
 
-NIM_CPU ?= arm
-
 #
 # Prevent compiler message
 # "note: the mangling of 'va_list' has changed in GCC 4.4"

repos/base/mk/spec/release.mk

@@ -1,2 +1 @@
 CC_OPT += -DGENODE_RELEASE
-NIM_OPT += -d:release

repos/base/mk/spec/x86_32.mk

@@ -16,7 +16,5 @@ CC_MARCH ?= -march=i686 -m32
 LD_MARCH ?= -melf_i386
 AS_MARCH ?= -march=i686 --32
 
-NIM_CPU ?= i386
-
 include $(BASE_DIR)/mk/spec/32bit.mk
 include $(BASE_DIR)/mk/spec/x86.mk

repos/base/mk/spec/x86_64.mk

@@ -20,7 +20,5 @@ CC_MARCH ?= -m64 -mcmodel=large
 #
 LD_MARCH ?= -melf_x86_64
 
-NIM_CPU ?= amd64
-
 include $(BASE_DIR)/mk/spec/64bit.mk
 include $(BASE_DIR)/mk/spec/x86.mk