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.

diff --git a/Makefile b/Makefile
index 7185b83..59ba71e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,7 @@ bindir = $(exec_prefix)/bin
 prefix = /usr/local/musl
 includedir = $(prefix)/include
 libdir = $(prefix)/lib
 prefix = /usr/local/musl
 includedir = $(prefix)/include
 libdir = $(prefix)/lib

+syslibdir = /lib

 
 SRCS = $(sort $(wildcard src/*/*.c))
 OBJS = $(SRCS:.c=.o)
 
 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
 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
 
 ALL_TOOLS = tools/musl-gcc
 

+LDSO_PATHNAME = $(syslibdir)/ld-musl-$(ARCH).so.1
+

 -include config.mak
 
 all: $(ALL_LIBS) $(ALL_TOOLS) $(ALL_LDSO)
 
 -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
 
 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 $@ $<
 
 %.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)
        $(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
        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 $< $@
 
        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 $< $@
 
 $(DESTDIR)$(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/%)
 
 
 .PRECIOUS: $(CRT_LIBS:lib/%=crt/%)
 

diff --git a/dist/config.mak b/dist/config.mak
index f0b8fd8..5429582 100644 (file)
--- 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
 
 # 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
 
 # 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.
 #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 6a35c71..42fdaec 100644 (file)
--- a/tools/gen-musl-gcc.sh
+++ b/tools/gen-musl-gcc.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
 #!/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
 
 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"$libgcc" -lgcc -Lxxxxxx \
 ' -std=gnu99 -nostdinc -nostdlib \
   -isystem "$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
 EOF