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authorRich Felker <dalias@aerifal.cx>2011-06-23 22:13:47 -0400
committerRich Felker <dalias@aerifal.cx>2011-06-23 22:13:47 -0400
commitec05a0b08f0d93341c149a6f3235e4ee5711b2f8 (patch)
treeefcab9f79ced717da74e9877caa421502351c0c9
parentb7f6e0c6f848b7a8c64b3f7b72014b48a9923729 (diff)
downloadmusl-ec05a0b08f0d93341c149a6f3235e4ee5711b2f8.tar.gz
adapt build/install/gcc-wrapper systems for dynamic linking support
-rw-r--r--Makefile20
-rw-r--r--dist/config.mak4
-rw-r--r--tools/gen-musl-gcc.sh5
3 files changed, 20 insertions, 9 deletions
diff --git a/Makefile b/Makefile
index 5c176423..277aa00a 100644
--- a/Makefile
+++ b/Makefile
@@ -35,14 +35,15 @@ EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
CRT_LIBS = lib/crt1.o lib/crti.o lib/crtn.o
LIBC_LIBS = lib/libc.a
ALL_LIBS = $(LIBC_LIBS) $(CRT_LIBS) $(EMPTY_LIBS)
+ALL_LDSO = lib/ld-musl-$(ARCH).so.1
ALL_TOOLS = tools/musl-gcc
-include config.mak
-all: $(ALL_LIBS) $(ALL_TOOLS)
+all: $(ALL_LIBS) $(ALL_TOOLS) $(ALL_LDSO)
-install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%) $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%)
+install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%) $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%) $(ALL_LDSO:%=$(DESTDIR)/%) $(ALL_LDSO:%/ld-musl-$(ARCH).so.1=$(DESTDIR)$(libdir)/libc.so)
clean:
rm -f crt/*.o
@@ -74,7 +75,7 @@ include/bits/alltypes.h: include/bits/alltypes.h.sh
%.lo: %.c $(GENH)
$(CC) $(CFLAGS) $(INC) $(PIC) -c -o $@ $<
-lib/libc.so: $(LOBJS)
+lib/ld-musl-$(ARCH).so.1: $(LOBJS)
$(CC) $(LDFLAGS) -o $@ $(LOBJS) -lgcc
$(OBJCOPY) --weaken $@
@@ -91,15 +92,24 @@ lib/%.o: crt/%.o
cp $< $@
tools/musl-gcc: tools/gen-musl-gcc.sh config.mak
- sh $< "$(prefix)" > $@ || { rm -f $@ ; exit 1 ; }
+ sh $< "$(prefix)" "$(ARCH)" > $@ || { rm -f $@ ; exit 1 ; }
chmod +x $@
$(DESTDIR)$(bindir)/%: tools/%
install -D $< $@
-$(DESTDIR)$(prefix)/%: %
+$(DESTDIR)$(libdir)/%: lib/%
install -D -m 644 $< $@
+$(DESTDIR)$(includedir)/%: include/%
+ install -D -m 644 $< $@
+
+$(DESTDIR)/lib/ld-musl-$(ARCH).so.1: lib/ld-musl-$(ARCH).so.1
+ install -D -m 755 $< $@
+
+$(DESTDIR)$(libdir)/libc.so: $(DESTDIR)/lib/ld-musl-$(ARCH).so.1
+ echo 'GROUP ( /lib/ld-musl-$(ARCH).so.1 )' > $@
+
.PRECIOUS: $(CRT_LIBS:lib/%=crt/%)
.PHONY: all clean install
diff --git a/dist/config.mak b/dist/config.mak
index 66aa44cd..f0b8fd8f 100644
--- a/dist/config.mak
+++ b/dist/config.mak
@@ -20,5 +20,5 @@ exec_prefix = /usr/local
# Uncomment for warnings (as errors). Might need tuning to your gcc version.
#CFLAGS += -Werror -Wall -Wpointer-arith -Wcast-align -Wno-parentheses -Wno-char-subscripts -Wno-uninitialized -Wno-sequence-point -Wno-missing-braces -Wno-unused-value -Wno-overflow -Wno-int-to-pointer-cast
-# Uncomment if you want to build a shared library (experimental).
-#LIBC_LIBS += lib/libc.so
+# Uncomment if you want to disable building the shared library.
+#ALL_LDSO =
diff --git a/tools/gen-musl-gcc.sh b/tools/gen-musl-gcc.sh
index bf20c1f6..fcd1e4ea 100644
--- a/tools/gen-musl-gcc.sh
+++ b/tools/gen-musl-gcc.sh
@@ -1,6 +1,6 @@
#!/bin/sh
-printf '#!/bin/sh\n\nlibc_prefix="%s"\n' "$1"
+printf '#!/bin/sh\n\nlibc_prefix="%s"\narch="%s"\n' "$1" "$2"
cat <<"EOF"
libc_lib=$libc_prefix/lib
@@ -27,5 +27,6 @@ done
exec "$0" "$@"
' -std=gnu99 -nostdinc -nostdlib \
-isystem "$libc_inc" -isystem "$gcc_inc" \
- -Wl,-xxxxxx "$@" -L"$libc_lib" -lc -L"$libgcc" -lgcc -Lxxxxxx -Wl,-nostdlib
+ -Wl,-xxxxxx "$@" -L"$libc_lib" -lc -L"$libgcc" -lgcc -Lxxxxxx \
+ -Wl,-dynamic-linker /lib/ld-musl-"$arch".so.1 -Wl,-nostdlib
EOF