improved error output -- variant/mark bounds;
simplified infer_types -- always freeze, no result substitution;
## targets
default: Isar
## global settings
SRC = $(ISABELLE_HOME)/src
OUT = $(ISABELLE_OUTPUT)
LOG = $(OUT)/log
USEDIR = $(ISATOOL) usedir -i false -g false -d false -D document -v true
## Isar
Isar: $(LOG)/HOL-Isar.gz
$(LOG)/HOL-Isar.gz: Isar/ROOT.ML Isar/document/intro.tex \
Isar/document/root.tex Isar/document/root.bib Isar/*.thy
@$(USEDIR) HOL Isar
## clean
clean:
@rm -f $(LOG)/HOL-Isar.gz