From 657378005efb48ea3f036633165bdcf53c902c70 Mon Sep 17 00:00:00 2001
From: ken <ken@mihrtec.com>
Date: Wed, 28 Sep 2016 15:17:11 -0700
Subject: [PATCH] debugging

---
 src/Makefile | 32 ++++++++++++++++++++++++--------
 1 file changed, 24 insertions(+), 8 deletions(-)

diff --git a/src/Makefile b/src/Makefile
index 06ad276..89ebf6e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -113,10 +113,16 @@ $(eval SLANG_SRC := $(patsubst  ./%, %,$(shell find -name "*.$(slang)" -not -nam
 # Foreach target type in the source-to-source language, add this source's
 # targets to the list of the current source-to-source language targets
 $(eval undefine SLANG_TRG)
-$(eval $(foreach trg,$($(slang)_TRG),
-$(eval SLANG_TRG += $(SLANG_SRC:%.$(slang)=%.$(if $($(slang)_STEM),$($(slang)_STEM).)$(trg)))))
+$(foreach trg,$($(slang)_TRG),
+$(eval SLANG_TRG += $(SLANG_SRC:%.$(slang)=%.$(if $($(slang)_STEM),$($(slang)_STEM).)$(trg))))
 # Stat the source file's last-modified time to the var SRC_TIME
 $(foreach src,$(SLANG_SRC),
+# Establish a command to run for compiling this file
+$(eval SHELL_CMD := cd $(dir $(src)) && $($(slang)_C) $($(slang)_FLAGS) $(notdir $(src)))
+# Evaluate missing targets
+$(eval FOUND_TRG := $(shell find $(dir $(src)) -name "$(basename $(notdir $(src))).*" -not -name ".*"))
+$(eval MISSING_TRG := $(filter-out $(FOUND_TRG), $(SLANG_TRG)))
+# Check timings of existing files
 $(eval SRC_TIME := $(shell stat -c %Y $(src)))
 # For each of the targets created by this source language, evaluate the
 # last-modified times of each potential target.  If the file does not exist, set
@@ -132,17 +138,23 @@ $(eval NEWEST_TRG_TIME := $(word 1,$(subst ==, ,$(TRG_TIMES))))
 # Find the older of the two times (between SRC_TIME and NEWEST_TRG_TIME)
 $(eval OLDER_TIME := $(firstword $(sort $(NEWEST_TRG_TIME) $(SRC_TIME))))
 # If the older of the two times is the newest target time found, then we need to
-# rebuild, but only if our build rule intends to actually make something
+# rebuild, but only if our build rule intends to actually make something.  If it
+# does not intend to make something, drop a functional rule to actually make the
+# target
 $(if $(MAKECMDGOALS),
 $(eval BUILDGOALS := $(filter-out clean scrub purge uninstall,$(MAKECMDGOALS))),
 $(eval BUILDGOALS := all))
-$(if $(and $(BUILDGOALS),$(filter $(OLDER_TIME),$(NEWEST_TRG_TIME))),
-$(eval SHELL_CMD := cd $(dir $(src)) && $($(slang)_C) $($(slang)_FLAGS) $(notdir $(src)))
-$(info $(SHELL_CMD) $(shell $(SHELL_CMD)))
-)))
+$(if $(or $(MISSING_TRG), $(and $(BUILDGOALS),$(filter $(OLDER_TIME),$(NEWEST_TRG_TIME)))),
+$(if $(findstring n,$(MAKEFLAGS)),
+$(SLANG_TRG):
+	$(SHELL_CMD)
+,
+$(info $(SHELL_CMD) $(eval $(shell $(SHELL_CMD)))))
+))
 # Put these targets on the MAKE_TARGETS list to be removed during "clean",
 # regardless of whether or not they were built just now.
 $(eval MAKE_TARGETS += $(SLANG_TRG))
+)
 #/PREMAKE_SOURCE_COMPILER########################################################
 endef
 # Compile a source language to a language that compiles to binary, but only if
@@ -183,7 +195,10 @@ $(eval MDEPS := $(shell echo $(MDEPS) | sed -e 's@[a-zA-Z0-9\-\+/]*\.\./include@
 $(eval ALLDEPS := $(MDEPS) $(DEPS)),\
 $(error Cannot generate deps for: $1, file not found))\
 $(eval SRC_OBJ    := $(basename $1).$($2_OBJ))\
-$(eval MAKE_TARGETS+= $(SRC_OBJ))
+$(eval MAKE_TARGETS += $(SRC_OBJ))
+# Assume that lost dependencies are in the folder with the source
+$(foreach lost,$(LOST),
+$(eval ALLDEPS := $(subst  $(lost), $(dir $1)$(lost),$(ALLDEPS))))
 
 # Find any deps that aren't built yet, which the compiler has flagged
 # as missing, but which we know the expected location of libs for
@@ -197,6 +212,7 @@ $(if $($2_DBG),\
 $(eval DBG_OBJ    := $(dir $1).$($2_DBG)/$(basename $(notdir $1)).$($2_OBJ))\
 $(if $(findstring $(dir $(DBG_OBJ)),$(MAKE_DIRS)),,\
 $(eval MAKE_DIRS += $(dir $(DBG_OBJ))))
+$(eval MAKE_TARGETS += $(DBG_OBJ))
 # Object for $1 with $($2_DBG) symbols
 $(DBG_OBJ): $(ALLDEPS) | $(dir $(DBG_OBJ))
 	$($2_C) $$($2_FLAGS) $(FLG) -Og -g$($2_DBG) -c -o $$@ $1
-- 
2.18.0