xref: /relibc/Makefile (revision 98c60c357f8a4ff29c00334469efff56a22cf12c) 
1TARGET?=$(shell rustc -Z unstable-options --print target-spec-json | grep llvm-target | cut -d '"' -f4)
2
3CARGO?=cargo
4CARGO_TEST?=$(CARGO)
5CARGOFLAGS?=-Z build-std=core,alloc,compiler_builtins
6RUSTCFLAGS?=
7export OBJCOPY?=objcopy
8
9# When using xargo, build it in local location
10export XARGO_HOME=$(CURDIR)/target/xargo
11
12BUILD="target/$(TARGET)"
13CARGOFLAGS+="--target=$(TARGET)"
14
15ifeq ($(TARGET),aarch64-unknown-linux-gnu)
16	export CC=aarch64-linux-gnu-gcc
17	export LD=aarch64-linux-gnu-ld
18	export AR=aarch64-linux-gnu-ar
19	export OBJCOPY=aarch64-linux-gnu-objcopy
20endif
21
22ifeq ($(TARGET),aarch64-unknown-redox)
23	export CC=aarch64-unknown-redox-gcc
24	export LD=aarch64-unknown-redox-ld
25	export AR=aarch64-unknown-redox-ar
26	export OBJCOPY=aarch64-unknown-redox-objcopy
27endif
28
29ifeq ($(TARGET),x86_64-unknown-linux-gnu)
30	export CC=x86_64-linux-gnu-gcc
31	export LD=x86_64-linux-gnu-ld
32	export AR=x86_64-linux-gnu-ar
33	export OBJCOPY=x86_64-linux-gnu-objcopy
34endif
35
36ifeq ($(TARGET),x86_64-unknown-redox)
37	export CC=x86_64-unknown-redox-gcc
38	export LD=x86_64-unknown-redox-ld
39	export AR=x86_64-unknown-redox-ar
40	export OBJCOPY=x86_64-unknown-redox-objcopy
41endif
42
43SRC=\
44	Cargo.* \
45	$(shell find src -type f)
46
47# FIXME: Remove the following line. It's only required since xargo automatically links with compiler_builtins, which conflicts with the compiler_builtins that rustc always links with.
48WEAKEN_SYMBOLS=\
49	-W __divti3 \
50	-W __fixdfti \
51	-W __floattidf \
52	-W __muloti4 \
53	-W __udivti3 \
54	-W __umodti3 \
55	-W __rust_probestack
56
57.PHONY: all clean fmt install install-headers libs submodules test
58
59all: | libs
60
61clean:
62	$(CARGO) clean
63	$(MAKE) -C tests clean
64	rm -rf sysroot
65
66check:
67	$(CARGO) check
68
69fmt:
70	./fmt.sh
71
72install-headers: libs
73	mkdir -pv "$(DESTDIR)/include"
74	cp -rv "include"/* "$(DESTDIR)/include"
75	cp -rv "target/include"/* "$(DESTDIR)/include"
76	cp -v "openlibm/include"/*.h "$(DESTDIR)/include"
77	cp -v "openlibm/src"/*.h "$(DESTDIR)/include"
78	cp -v "pthreads-emb/"*.h "$(DESTDIR)/include"
79
80libs: \
81	$(BUILD)/release/libc.a \
82	$(BUILD)/release/libc.so \
83	$(BUILD)/release/crt0.o \
84	$(BUILD)/release/crti.o \
85	$(BUILD)/release/crtn.o \
86	$(BUILD)/release/ld_so
87
88install-libs: libs
89	mkdir -pv "$(DESTDIR)/lib"
90	cp -v "$(BUILD)/release/libc.a" "$(DESTDIR)/lib"
91	cp -v "$(BUILD)/release/libc.so" "$(DESTDIR)/lib"
92	ln -frsv "$(DESTDIR)/lib/libc.so" "$(DESTDIR)/lib/libc.so.6"
93	cp -v "$(BUILD)/release/crt0.o" "$(DESTDIR)/lib"
94	cp -v "$(BUILD)/release/crti.o" "$(DESTDIR)/lib"
95	cp -v "$(BUILD)/release/crtn.o" "$(DESTDIR)/lib"
96	cp -v "$(BUILD)/release/ld_so" "$(DESTDIR)/lib/ld64.so.1"
97	cp -v "$(BUILD)/openlibm/libopenlibm.a" "$(DESTDIR)/lib/libm.a"
98	cp -v "$(BUILD)/pthreads-emb/libpthread.a" "$(DESTDIR)/lib/libpthread.a"
99
100install: install-headers install-libs
101
102submodules:
103	git submodule sync
104	git submodule update --init --recursive
105
106sysroot: all
107	rm -rf $@
108	rm -rf $@.partial
109	mkdir -p $@.partial
110	$(MAKE) install DESTDIR=$@.partial
111	mv $@.partial $@
112	touch $@
113
114test: sysroot
115	# TODO: Fix SIGILL when running cargo test
116	# $(CARGO_TEST) test
117	$(MAKE) -C tests verify
118
119# Debug targets
120
121$(BUILD)/debug/libc.a: $(BUILD)/debug/librelibc.a $(BUILD)/pthreads-emb/libpthread.a $(BUILD)/openlibm/libopenlibm.a
122	echo "create $@" > "$@.mri"
123	for lib in $^; do\
124		echo "addlib $$lib" >> "$@.mri"; \
125	done
126	echo "save" >> "$@.mri"
127	echo "end" >> "$@.mri"
128	$(AR) -M < "$@.mri"
129
130$(BUILD)/debug/libc.so: $(BUILD)/debug/librelibc.a $(BUILD)/pthreads-emb/libpthread.a $(BUILD)/openlibm/libopenlibm.a
131	$(CC) -nostdlib -shared -Wl,--allow-multiple-definition -Wl,--whole-archive $^ -Wl,--no-whole-archive -Wl,-soname,libc.so.6 -o $@
132
133$(BUILD)/debug/librelibc.a: $(SRC)
134	CARGO_INCREMENTAL=0 $(CARGO) rustc $(CARGOFLAGS) -- --emit link=$@ $(RUSTCFLAGS)
135	# FIXME: Remove the following line. It's only required since xargo automatically links with compiler_builtins, which conflicts with the compiler_builtins that rustc always links with.
136	$(OBJCOPY) $@ $(WEAKEN_SYMBOLS)
137	touch $@
138
139$(BUILD)/debug/crt0.o: $(SRC)
140	CARGO_INCREMENTAL=0 $(CARGO) rustc --manifest-path src/crt0/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
141	touch $@
142
143$(BUILD)/debug/crti.o: $(SRC)
144	CARGO_INCREMENTAL=0 $(CARGO) rustc --manifest-path src/crti/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
145	touch $@
146
147$(BUILD)/debug/crtn.o: $(SRC)
148	CARGO_INCREMENTAL=0 $(CARGO) rustc --manifest-path src/crtn/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
149	touch $@
150
151$(BUILD)/debug/ld_so.o: $(SRC)
152	CARGO_INCREMENTAL=0 $(CARGO) rustc --manifest-path src/ld_so/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
153	touch $@
154
155$(BUILD)/debug/ld_so: $(BUILD)/debug/ld_so.o $(BUILD)/debug/crti.o $(BUILD)/debug/libc.a $(BUILD)/debug/crtn.o
156	$(LD) --no-relax -T src/ld_so/ld_script/$(TARGET).ld --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
157
158# Release targets
159
160$(BUILD)/release/libc.a: $(BUILD)/release/librelibc.a $(BUILD)/pthreads-emb/libpthread.a $(BUILD)/openlibm/libopenlibm.a
161	echo "create $@" > "$@.mri"
162	for lib in $^; do\
163		echo "addlib $$lib" >> "$@.mri"; \
164	done
165	echo "save" >> "$@.mri"
166	echo "end" >> "$@.mri"
167	$(AR) -M < "$@.mri"
168
169$(BUILD)/release/libc.so: $(BUILD)/release/librelibc.a $(BUILD)/pthreads-emb/libpthread.a $(BUILD)/openlibm/libopenlibm.a
170	$(CC) -nostdlib -shared -Wl,--allow-multiple-definition -Wl,--whole-archive $^ -Wl,--no-whole-archive -Wl,-soname,libc.so.6 -o $@
171
172$(BUILD)/release/librelibc.a: $(SRC)
173	CARGO_INCREMENTAL=0 $(CARGO) rustc --release $(CARGOFLAGS) -- --emit link=$@ $(RUSTCFLAGS)
174	$(OBJCOPY) $@ $(WEAKEN_SYMBOLS)
175	touch $@
176
177$(BUILD)/release/crt0.o: $(SRC)
178	CARGO_INCREMENTAL=0 $(CARGO) rustc --release --manifest-path src/crt0/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
179	touch $@
180
181$(BUILD)/release/crti.o: $(SRC)
182	CARGO_INCREMENTAL=0 $(CARGO) rustc --release --manifest-path src/crti/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
183	touch $@
184
185$(BUILD)/release/crtn.o: $(SRC)
186	CARGO_INCREMENTAL=0 $(CARGO) rustc --release --manifest-path src/crtn/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
187	touch $@
188
189$(BUILD)/release/ld_so.o: $(SRC)
190	CARGO_INCREMENTAL=0 $(CARGO) rustc --release --manifest-path src/ld_so/Cargo.toml $(CARGOFLAGS) -- --emit obj=$@ -C panic=abort $(RUSTCFLAGS)
191	touch $@
192
193$(BUILD)/release/ld_so: $(BUILD)/release/ld_so.o $(BUILD)/release/crti.o $(BUILD)/release/libc.a $(BUILD)/release/crtn.o
194	$(LD) --no-relax -T src/ld_so/ld_script/$(TARGET).ld --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
195
196# Other targets
197
198$(BUILD)/openlibm: openlibm
199	rm -rf $@ $@.partial
200	mkdir -p $(BUILD)
201	cp -r $< $@.partial
202	mv $@.partial $@
203	touch $@
204
205$(BUILD)/openlibm/libopenlibm.a: $(BUILD)/openlibm $(BUILD)/release/librelibc.a
206	$(MAKE) AR=$(AR) CC=$(CC) LD=$(LD) CPPFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libopenlibm.a
207
208$(BUILD)/pthreads-emb: pthreads-emb
209	rm -rf $@ $@.partial
210	mkdir -p $(BUILD)
211	cp -r $< $@.partial
212	mv $@.partial $@
213	touch $@
214
215$(BUILD)/pthreads-emb/libpthread.a: $(BUILD)/pthreads-emb $(BUILD)/release/librelibc.a
216	$(MAKE) AR=$(AR) CC=$(CC) LD=$(LD) CFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libpthread.a
217