lix/src/libexpr/local.mk
John Ericson 5576d5e987 Parse string context elements properly
Prior to this change, we had a bunch of ad-hoc string manipulation code
scattered around. This made it hard to figure out what data model for
string contexts is.

Now, we still store string contexts most of the time as encoded strings
--- I was wary of the performance implications of changing that --- but
whenever we parse them we do so only through the
`NixStringContextElem::parse` method, which handles all cases. This
creates a data type that is very similar to `DerivedPath` but:

 - Represents the funky `=<drvpath>` case as properly distinct from the
   others.

 - Only encodes a single output, no wildcards and no set, for the
   "built" case.

(I would like to deprecate `=<path>`, after which we are in spitting
distance of `DerivedPath` and could maybe get away with fewer types, but
that is another topic for another day.)
2023-01-10 13:10:49 -05:00

49 lines
1.7 KiB
Makefile

libraries += libexpr
libexpr_NAME = libnixexpr
libexpr_DIR := $(d)
libexpr_SOURCES := \
$(wildcard $(d)/*.cc) \
$(wildcard $(d)/value/*.cc) \
$(wildcard $(d)/primops/*.cc) \
$(wildcard $(d)/flake/*.cc) \
$(d)/lexer-tab.cc \
$(d)/parser-tab.cc
libexpr_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/libmain -I src/libexpr
libexpr_LIBS = libutil libstore libfetchers
libexpr_LDFLAGS += -lboost_context -pthread
ifdef HOST_LINUX
libexpr_LDFLAGS += -ldl
endif
# The dependency on libgc must be propagated (i.e. meaning that
# programs/libraries that use libexpr must explicitly pass -lgc),
# because inline functions in libexpr's header files call libgc.
libexpr_LDFLAGS_PROPAGATED = $(BDW_GC_LIBS)
libexpr_ORDER_AFTER := $(d)/parser-tab.cc $(d)/parser-tab.hh $(d)/lexer-tab.cc $(d)/lexer-tab.hh
$(d)/parser-tab.cc $(d)/parser-tab.hh: $(d)/parser.y
$(trace-gen) bison -v -o $(libexpr_DIR)/parser-tab.cc $< -d
$(d)/lexer-tab.cc $(d)/lexer-tab.hh: $(d)/lexer.l
$(trace-gen) flex --outfile $(libexpr_DIR)/lexer-tab.cc --header-file=$(libexpr_DIR)/lexer-tab.hh $<
clean-files += $(d)/parser-tab.cc $(d)/parser-tab.hh $(d)/lexer-tab.cc $(d)/lexer-tab.hh
$(eval $(call install-file-in, $(d)/nix-expr.pc, $(libdir)/pkgconfig, 0644))
$(foreach i, $(wildcard src/libexpr/value/*.hh), \
$(eval $(call install-file-in, $(i), $(includedir)/nix/value, 0644)))
$(foreach i, $(wildcard src/libexpr/flake/*.hh), \
$(eval $(call install-file-in, $(i), $(includedir)/nix/flake, 0644)))
$(d)/primops.cc: $(d)/imported-drv-to-derivation.nix.gen.hh $(d)/primops/derivation.nix.gen.hh $(d)/fetchurl.nix.gen.hh
$(d)/flake/flake.cc: $(d)/flake/call-flake.nix.gen.hh