# slibc — Yet another C library # Copyright © 2015 Mattias Andrée (m@maandree.se) # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # Flags required at compilation of a libc, specifying that unhosted C is used. CCFLAGS_UNHOSTED = -nostdinc -ffreestanding # Preprocessor flags defined by slibc that are required to build the slibc. CCFLAGS_SLIBC_DEFS = -D_SLIBC_SOURCE=1 -D_GNU_SOURCE=1 -D_BSD_SOURCE=1 -D_SLIBC_SUPPRESS_WARNINGS=1 \ -D_POSIX_C_SOURCE=999999L -D_XOPEN_SOURCE=9999 -D_PLAN9_SOURCE=1 -D__BUILDING_SLIBC=1 # __BUILDING_SLIBC is used to that make all prototypes visible, that are otherwise # hidden because the library is compiled with a too old revision of C. # Flag that specifies which C dialect the library is written. CCFLAGS_CSTD = -std=gnu99 # Flags that specify where the system header files (that would in this case # be this library's header files) are located. CCFLAGS_INCLUDES = -Iinclude # Optimisation flags. CCFLAGS_OPTIMISE = -Og -g # Warning flags. CCFLAGS_WARNINGS = -Wall -Wextra -Wdouble-promotion -Wno-format -Winit-self -Wmissing-include-dirs \ -Wtrampolines -Wfloat-equal -Wshadow -Wmissing-prototypes -Wmissing-declarations \ -Wredundant-decls -Wnested-externs -Winline -Wno-variadic-macros -Wsign-conversion \ -Wswitch-default -Wconversion -Wsync-nand -Wunsafe-loop-optimizations -Wcast-align \ -Wstrict-overflow -Wdeclaration-after-statement -Wundef -Wbad-function-cast \ -Wcast-qual -Wwrite-strings -Wlogical-op -Waggregate-return -Wstrict-prototypes \ -Wold-style-definition -Wpacked -Wvector-operation-performance \ -Wunsuffixed-float-constants -Wsuggest-attribute=const -Wsuggest-attribute=noreturn \ -Wsuggest-attribute=pure -Wsuggest-attribute=format -Wnormalized=nfkc # -pedantic is excluded. # -Wno-format is temporarily substituted for -Wformat=1 # All flags used required when compiling the library. CCFLAGS_COMMON = $(CCFLAGS_UNHOSTED) $(CCFLAGS_SLIBC_DEFS) $(CCFLAGS_CSTD) $(CCFLAGS_INCLUDES) \ $(CCFLAGS_OPTIMISE) $(CCFLAGS_WARNINGS) CCFLAGS_COMMON += $(CPPFLAGS) $(CFLAGS) CCFLAGS_STATIC = $(CCFLAGS_COMMON) CCFLAGS_SHARED = $(CCFLAGS_COMMON) -fPIC -DSHARED # Flags required when genering header file dependency list. MMFLAGS = $(CCFLAGS_COMMON) -Igen -MG # Flags to pass into the texinfo manual compilers, when processing with TeX. TEXINFO_FLAGS = # Flags to pass into the texinfo manual compilers, when not processing with TeX. INFO_FLAGS = # This shall be set to 'logo' when doc/logo.svg exists, and is the logo of the project. LOGO = # The number of splits of the info manual. INFOPARTS = 0 # Splits number of the info manual. INFOPARTS_ = $(shell seq $(INFOPARTS)) SHE = '\#' # Object files to build. OBJECTS = $(shell find src | grep '\.c$$' | grep -v $(SHE) | sed -e 's:^src/:obj/:' -e 's:\.c$$:\.o:') # All header files. HEADERS = $(shell find . | grep '\.h$$' | grep -v $(SHE) | sed -e 's:^\./::') # All code files. SOURCES = $(shell find src | grep '\.c$$' | grep -v $(SHE)) # Generated headers files. GENERATED = include/bits/intconf.h # You may add config.mk to the topmost directory # to change any configurations above. -include config.mk # The default rule. .PHONY: default default: all # Include list of file dependencies for object files. include obj/deps.mk # Build everything. .PHONY: all all: $(OBJECTS) doc # Build the library. .PHONY: lib lib: $(OBJECTS) # Build object file. obj/%.o: $(GENERATED) @mkdir -p $$(dirname $@) $(CC) -c -o $@ src/$*.c $(CCFLAGS_SHARED) # Preprocess header files. include/%.h: gen/%.h bin/gen/% @mkdir -p $$(dirname $@) gpp -s // < $< > $@ bin/gen/%: obj/gen/%.o @mkdir -p $$(dirname $@) $(CC) $(CCFLAGS_WARNINGS) -std=c99 -o $@ $^ obj/gen/%.o: gen/%.c @mkdir -p $$(dirname $@) $(CC) -c -o $@ $< # Build the documentation. .PHONY: doc doc: info pdf ps dvi .PHONY: info pdf ps dvi info: bin/slibc.info pdf: bin/slibc.pdf ps: bin/slibc.ps dvi: bin/slibc.dvi # Project logo for the manual. obj/%.svg: doc/%.svg @mkdir -p obj cp $< $@ obj/%.pdf: doc/%.svg @mkdir -p obj rsvg-convert --format=pdf $< > $@ obj/%.eps: obj/%.ps ps2eps $< obj/%.ps: doc/%.svg @mkdir -p obj rsvg-convert --format=ps $< > $@ # Compile texinfo manual. bin/%.info $(foreach P,$(INFOPARTS_),bin/%.info-$(P)): doc/info/%.texinfo doc/info/*.texinfo doc/info/*/*.texinfo @mkdir -p bin $(MAKEINFO) $(INFO_FLAGS) $< mv $*.info bin ifneq ($(INFOPARTS),0) mv $*.info-* bin endif bin/%.pdf: doc/info/%.texinfo doc/info/*.texinfo doc/info/*/*.texinfo $(foreach F,$(LOGO),obj/$(F).pdf) @! test -d obj/pdf || rm -rf obj/pdf @mkdir -p obj/pdf bin cd obj/pdf && texi2pdf $(TEXINFO_FLAGS) ../../$< < /dev/null mv obj/pdf/$*.pdf $@ bin/%.dvi: doc/info/%.texinfo doc/info/*.texinfo doc/info/*/*.texinfo $(foreach F,$(LOGO),obj/$(F).eps) @! test -d obj/dvi || rm -rf obj/dvi @mkdir -p obj/dvi bin cd obj/dvi && $(TEXI2DVI) $(TEXINFO_FLAGS) ../../$< < /dev/null mv obj/dvi/$*.dvi $@ bin/%.ps: doc/info/%.texinfo doc/info/*.texinfo doc/info/*/*.texinfo $(foreach F,$(LOGO),obj/$(F).eps) @! test -d obj/ps || rm -rf obj/ps @mkdir -p obj/ps bin cd obj/ps && texi2pdf $(TEXINFO_FLAGS) --ps ../../$< < /dev/null mv obj/ps/$*.ps $@ # Generate list of file dependencies for object files. obj/deps.mk: Makefile $(HEADERS) $(SOURCES) $(GENERATED) @mkdir -p obj find src | grep '\.c$$' | xargs $(CC) -MM $(MMFLAGS) > $@ sed -i 's#^[^ :]*\.o: src\([^ ]*\)/[^ /]*\.c#obj\1/&#' $@ sed -i 's# gen/\([^ ]*\.h\)# \1#g' $@ # Clean generated files. .PHONY: clean clean: -rm -rf obj bin -rm -f include/bits/intconf.h # Remove all files that are not part of the source. .PHONY: distclean distclean: clean -rm -f config.mk