Hi Pádraig,
Test of coreutils-8.24.161-1204d on Mac OS X 10.5.8:
Compilation fails:
$ ./configure --prefix=/Users/bruno/data/local-macos CPPFLAGS=-Wall
$ make
...
CCLD src/libstdbuf.so
Undefined symbols:
"_main", referenced from:
start in crt1.10.5.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [src/libstdbuf.so] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
Looking more closely which command fails:
$ make AM_DEFAULT_VERBOSITY=1
make all-recursive
Making all in po
make[2]: Nothing to be done for `all'.
Making all in .
gcc -std=gnu99 -fPIC -g -O2 -shared -o src/libstdbuf.so
src/src_libstdbuf_so-libstdbuf.o -L/Users/bruno/data/local-macos/lib -lintl
-liconv -lc -Wl,-framework -Wl,CoreFoundation
Undefined symbols:
"_main", referenced from:
start in crt1.10.5.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [src/libstdbuf.so] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
This fails because the gcc here is Apple GCC:
$ gcc -v
Using built-in specs.
Target: i686-apple-darwin9
Configured with: /var/tmp/gcc/gcc-5465~16/src/configure --disable-checking
-enable-werror --prefix=/usr --mandir=/share/man
--enable-languages=c,objc,c++,obj-c++
--program-transform-name=/^[cg][^.-]*$/s/$/-4.0/
--with-gxx-include-dir=/include/c++/4.0.0 --with-slibdir=/usr/lib
--build=i686-apple-darwin9 --with-arch=apple --with-tune=generic
--host=i686-apple-darwin9 --target=i686-apple-darwin9
Thread model: posix
gcc version 4.0.1 (Apple Inc. build 5465)
and it ignores the -shared option.
The correct command line would be
$ gcc -std=gnu99 -fPIC -g -O2 -dynamiclib -o src/libstdbuf.so
src/src_libstdbuf_so-libstdbuf.o -L/Users/bruno/data/local-macos/lib -lintl
-liconv -lc -Wl,-framework -Wl,CoreFoundation
or even better, incorporating info from libtool:
$ gcc -std=gnu99 -fPIC -fno-common -DPIC -g -O2 -dynamiclib -o
src/libstdbuf.so src/src_libstdbuf_so-libstdbuf.o
-L/Users/bruno/data/local-macos/lib -lintl -liconv -lc -Wl,-framework
-Wl,CoreFoundation
The cause of this portability problem is that the Makefile is attempting to
create a shared library without libtool.
"make check" then passes, but of course with some skipped tests:
no-ctx.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/cp/no-ctx.sh
r-root.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/rm/r-root.sh
csplit-io-err.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/misc/csplit-io-err.sh
nfs-removal-race.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/cp/nfs-removal-race.sh
no-mtab-status.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/df/no-mtab-status.sh
skip-duplicates.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/df/skip-duplicates.sh
getxattr-speedup.sh: skipped test: $CC -shared ... failed to build a shared lib
SKIP: tests/ls/getxattr-speedup.sh
Bruno
