Hello,
I've an autotools script to convert to cmake. It has a lot of long case
statement. Any tips to easily convert this statement?
Here an example:
case "$THREADS" in
no | none | single)
THREADS=none
;;
posix | pthreads)
THREADS=posix
THREADDLLIBS=-lpthread
case "$host" in
x86-*-linux* | ia64-*-linux* | i586-*-linux* | i686-*-linux* |
x86_64-*-linux* | alpha-*-linux* | sparc*-*-linux*)
AC_DEFINE(GC_LINUX_THREADS)
AC_DEFINE(_REENTRANT)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
;;
*-*-linux*)
AC_DEFINE(GC_LINUX_THREADS)
AC_DEFINE(_REENTRANT)
;;
*-*-aix*)
AC_DEFINE(GC_AIX_THREADS)
AC_DEFINE(_REENTRANT)
;;
*-*-hpux11*)
AC_MSG_WARN("Only HP/UX 11 POSIX threads are supported.")
AC_DEFINE(GC_HPUX_THREADS)
AC_DEFINE(_POSIX_C_SOURCE,199506L)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
THREADDLLIBS="-lpthread -lrt"
# HPUX needs REENTRANT for the _r calls.
AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.])
;;
*-*-hpux10*)
AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.")
;;
*-*-openbsd*)
AC_DEFINE(GC_OPENBSD_THREADS)
THREADDLLIBS=-pthread
INCLUDES="$INCLUDES -pthread"
openbsd_threads=true
;;
*-*-freebsd*)
AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
AC_DEFINE(GC_FREEBSD_THREADS)
INCLUDES="$INCLUDES -pthread"
;;
*-*-kfreebsd*-gnu)
AC_DEFINE(GC_FREEBSD_THREADS)
INCLUDES="$INCLUDES -pthread"
THREADDLLIBS=-pthread
AC_DEFINE(_REENTRANT)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_DEFINE(USE_COMPILER_TLS)
;;
*-*-gnu*)
AC_DEFINE(GC_GNU_THREADS)
AC_DEFINE(_REENTRANT)
AC_DEFINE(THREAD_LOCAL_ALLOC)
;;
*-*-netbsd*)
AC_MSG_WARN("Only on NetBSD 2.0 or later.")
AC_DEFINE(GC_NETBSD_THREADS)
AC_DEFINE(_REENTRANT)
AC_DEFINE(_PTHREADS)
THREADDLLIBS="-lpthread -lrt"
;;
*-*-solaris*)
AC_DEFINE(GC_SOLARIS_THREADS)
AC_DEFINE(THREAD_LOCAL_ALLOC)
THREADDLLIBS="-lpthread -lrt"
if test "$GCC" != yes; then
CFLAGS="$CFLAGS -O"
need_atomic_ops_asm=true
fi
;;
*-*-irix*)
AC_DEFINE(GC_IRIX_THREADS)
;;
*-*-cygwin*)
AC_DEFINE(GC_THREADS)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
# Cygwin doesn't have a real libpthread, so Libtool can't link
# against it.
THREADDLLIBS=""
win32_threads=true
;;
*-*-darwin*)
AC_DEFINE(GC_DARWIN_THREADS)
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
# Parallel-mark is currently unreliable on Darwin; ignore request
# if test "${enable_parallel_mark}" = yes; then
# AC_DEFINE(PARALLEL_MARK)
# fi
darwin_threads=true
;;
*-*-osf*)
AC_DEFINE(GC_OSF1_THREADS)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
# May want to enable it in other cases, too.
# Measurements havent yet been done.
fi
INCLUDES="$INCLUDES -pthread"
THREADDLLIBS="-lpthread -lrt"
;;
*)
AC_MSG_ERROR("Pthreads not supported by the GC on this platform.")
;;
esac
;;
win32)
AC_DEFINE(GC_THREADS)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
AC_DEFINE(THREAD_LOCAL_ALLOC)
fi
win32_threads=true
AC_DEFINE([EMPTY_GETENV_RESULTS], [1],
[Wine getenv may not return NULL for missing entry.])
;;
dgux386)
THREADS=dgux386
AC_MSG_RESULT($THREADDLLIBS)
# Use pthread GCC switch
THREADDLLIBS=-pthread
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
AC_DEFINE([GC_DGUX386_THREADS], 1,
[Define to enable support for DB/UX threads on i386.])
AC_DEFINE([DGUX_THREADS], 1,
[Define to enable support for DB/UX threads.])
# Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread
INCLUDES="-pthread $INCLUDES"
;;
aix)
THREADS=posix
THREADDLLIBS=-lpthread
AC_DEFINE(GC_AIX_THREADS)
AC_DEFINE(_REENTRANT)
;;
decosf1 | irix | mach | os2 | solaris | dce | vxworks)
AC_MSG_ERROR(thread package $THREADS not yet supported)
;;
*)
AC_MSG_ERROR($THREADS is an unknown thread package)
;;
esac
Nicola Brisotto
vcard
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