c57ab17687
Linux is (as far as I know) the only mainstream operating system that requires linking with libdl for dlopen. On BSD, libdl doesn't exist, so on non-FreeBSD BSDs linking will currently fail. On macOS, it's apparently just a symlink to libSystem (macOS libc), presumably present for compatibility with things that assume Linux. So the right thing to do here is to only add -ldl on Linux, not to add it for everything that isn't FreeBSD.
46 lines
1.5 KiB
Makefile
46 lines
1.5 KiB
Makefile
libraries += libexpr
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libexpr_NAME = libnixexpr
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libexpr_DIR := $(d)
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libexpr_SOURCES := \
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$(wildcard $(d)/*.cc) \
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$(wildcard $(d)/primops/*.cc) \
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$(wildcard $(d)/flake/*.cc) \
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$(d)/lexer-tab.cc \
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$(d)/parser-tab.cc
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libexpr_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/libmain -I src/libexpr
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libexpr_LIBS = libutil libstore libfetchers
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libexpr_LDFLAGS = -lboost_context
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ifeq ($(OS), Linux)
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libexpr_LDFLAGS += -ldl
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endif
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# The dependency on libgc must be propagated (i.e. meaning that
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# programs/libraries that use libexpr must explicitly pass -lgc),
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# because inline functions in libexpr's header files call libgc.
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libexpr_LDFLAGS_PROPAGATED = $(BDW_GC_LIBS)
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libexpr_ORDER_AFTER := $(d)/parser-tab.cc $(d)/parser-tab.hh $(d)/lexer-tab.cc $(d)/lexer-tab.hh
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$(d)/parser-tab.cc $(d)/parser-tab.hh: $(d)/parser.y
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$(trace-gen) bison -v -o $(libexpr_DIR)/parser-tab.cc $< -d
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$(d)/lexer-tab.cc $(d)/lexer-tab.hh: $(d)/lexer.l
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$(trace-gen) flex --outfile $(libexpr_DIR)/lexer-tab.cc --header-file=$(libexpr_DIR)/lexer-tab.hh $<
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clean-files += $(d)/parser-tab.cc $(d)/parser-tab.hh $(d)/lexer-tab.cc $(d)/lexer-tab.hh
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$(eval $(call install-file-in, $(d)/nix-expr.pc, $(prefix)/lib/pkgconfig, 0644))
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$(foreach i, $(wildcard src/libexpr/flake/*.hh), \
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$(eval $(call install-file-in, $(i), $(includedir)/nix/flake, 0644)))
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$(d)/primops.cc: $(d)/imported-drv-to-derivation.nix.gen.hh $(d)/primops/derivation.nix.gen.hh $(d)/fetchurl.nix.gen.hh
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$(d)/flake/flake.cc: $(d)/flake/call-flake.nix.gen.hh
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