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authorRich Felker <dalias@aerifal.cx>2011-06-27 21:38:11 -0400
committerRich Felker <dalias@aerifal.cx>2011-06-27 21:38:11 -0400
commit207c45d7abdf7a4bd93973f195deb4d8e202c3e3 (patch)
tree87dbe7fe45e66c912d4e5c320318be7d1bbf2fc7
parent230f1813ad8264f09d5247fa0ed1e8e361c21e0e (diff)
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cleanup shared library build system to be more $HOME-local-install friendly
the path for the dynamic linker is now configurable, and failure to install the symlink for it will not stop the build.
-rw-r--r--Makefile28
-rw-r--r--dist/config.mak5
-rw-r--r--tools/gen-musl-gcc.sh4
3 files changed, 21 insertions, 16 deletions
diff --git a/Makefile b/Makefile
index 7185b83c..59ba71e8 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ bindir = $(exec_prefix)/bin
prefix = /usr/local/musl
includedir = $(prefix)/include
libdir = $(prefix)/lib
+syslibdir = /lib
SRCS = $(sort $(wildcard src/*/*.c))
OBJS = $(SRCS:.c=.o)
@@ -33,17 +34,18 @@ ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH))
EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
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
-
+STATIC_LIBS = lib/libc.a $(EMPTY_LIBS)
+SHARED_LIBS = lib/libc.so
+ALL_LIBS = $(CRT_LIBS) $(STATIC_LIBS) $(SHARED_LIBS)
ALL_TOOLS = tools/musl-gcc
+LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH).so.1
+
-include config.mak
all: $(ALL_LIBS) $(ALL_TOOLS) $(ALL_LDSO)
-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)
+install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(ALL_INCLUDES:include/%=$(DESTDIR)$(includedir)/%) $(ALL_TOOLS:tools/%=$(DESTDIR)$(bindir)/%) $(ALL_LDSO:%=$(DESTDIR)/%) $(LDSO_PATHNAME)
clean:
rm -f crt/*.o
@@ -75,8 +77,8 @@ include/bits/alltypes.h: include/bits/alltypes.h.sh
%.lo: %.c $(GENH)
$(CC) $(CFLAGS) $(INC) $(PIC) -c -o $@ $<
-lib/ld-musl-$(ARCH).so.1: $(LOBJS)
- $(CC) $(LDFLAGS) -Wl,-soname=libc.so.1 -o $@ $(LOBJS) -lgcc
+lib/libc.so: $(LOBJS)
+ $(CC) $(LDFLAGS) -Wl,-soname=libc.so -o $@ $(LOBJS) -lgcc
$(OBJCOPY) --weaken $@
lib/libc.a: $(OBJS)
@@ -92,23 +94,23 @@ lib/%.o: crt/%.o
cp $< $@
tools/musl-gcc: tools/gen-musl-gcc.sh config.mak
- sh $< "$(prefix)" "$(ARCH)" > $@ || { rm -f $@ ; exit 1 ; }
+ sh $< "$(prefix)" "$(LDSO_PATHNAME)" > $@ || { rm -f $@ ; exit 1 ; }
chmod +x $@
$(DESTDIR)$(bindir)/%: tools/%
install -D $< $@
+$(DESTDIR)$(libdir)/%.so: lib/%.so
+ install -D -m 755 $< $@
+
$(DESTDIR)$(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)$(libdir)/libc.so: lib/ld-musl-$(ARCH).so.1
- ln -sf /lib/ld-musl-$(ARCH).so.1 $@
+$(DESTDIR)$(LDSO_PATHNAME): lib/libc.so
+ ln -sf $(libdir)/libc.so $@ || true
.PRECIOUS: $(CRT_LIBS:lib/%=crt/%)
diff --git a/dist/config.mak b/dist/config.mak
index f0b8fd8f..5429582c 100644
--- a/dist/config.mak
+++ b/dist/config.mak
@@ -11,6 +11,9 @@ prefix = /usr/local/musl
# Installation prefix for musl-gcc compiler wrapper.
exec_prefix = /usr/local
+# Location for the dynamic linker ld-musl-$(ARCH).so.1
+syslibdir = /lib
+
# Uncomment if you want to build i386 musl on a 64-bit host
#CFLAGS += -m32
@@ -21,4 +24,4 @@ exec_prefix = /usr/local
#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 disable building the shared library.
-#ALL_LDSO =
+#SHARED_LIBS =
diff --git a/tools/gen-musl-gcc.sh b/tools/gen-musl-gcc.sh
index 6a35c71f..42fdaec7 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"\narch="%s"\n' "$1" "$2"
+printf '#!/bin/sh\n\nlibc_prefix="%s"\nldso_pathname="%s"\n' "$1" "$2"
cat <<"EOF"
libc_lib=$libc_prefix/lib
@@ -28,5 +28,5 @@ exec "$0" "$@"
' -std=gnu99 -nostdinc -nostdlib \
-isystem "$libc_inc" -isystem "$gcc_inc" \
-Wl,-xxxxxx "$@" -L"$libc_lib" -lc -L"$libgcc" -lgcc -Lxxxxxx \
- -Wl,-dynamic-linker,/lib/ld-musl-"$arch".so.1 -Wl,-nostdlib
+ -Wl,-dynamic-linker,"$ldso_pathname" -Wl,-nostdlib
EOF