r10456: More SCons fixes:

 - Add framework for fallback generating code
 - Move pread / pwrite replacement functions to libreplace
 - Support pidl builds correctly
 - Support asn1 builds correctly
 - Move OS-specific checks to lib/replace/SConscript
(This used to be commit fbbfad0a1f7dedbf48e835a864f8285f283d72f3)

7 files changed, 200 insertions, 12 deletions

diff --git a/source4/lib/charset/SConscript b/source4/lib/charset/SConscript
index 53e5db44bb..b3305579e1 100644
--- a/source4/lib/charset/SConscript
+++ b/source4/lib/charset/SConscript
@@ -1,15 +1,91 @@
+#!/usr/bin/env python
+# tastes like -*- python -*-
+
 Import('hostenv')
-SConscript('../../build/scons/iconv.py')
-#            tastes like -*- python -*-
 
-#conf = Configure( custom_tests = { 'CheckIconv' : CheckIconv })
-#(have_iconv,iconv) = conf.CheckIconv()
-#conf.Finish()
+def _CheckIconvPath(context,path):
+	# Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  	# those with the standalone portable libiconv installed).
+	context.Message("checking for iconv in " + path + " ... ")
+
+	main = """
+int main()
+{
+	iconv_t cd = iconv_open("","");
+    iconv(cd,NULL,NULL,NULL,NULL);
+    iconv_close(cd);
+	return 0;
+}"""
+
+	have_giconv_iconv = context.TryLink("""
+#include <stdlib.h>
+#include <giconv.h>
+""" + main, '.c')
+	if have_giconv_iconv:
+		context.Result(1)
+		return ("giconv.h", "")
+
+	have_iconv_iconv = context.TryLink("""
+#include <stdlib.h>
+#include <iconv.h>
+""" + main, '.c')
+
+	if have_iconv_iconv:
+		context.Result(1)
+		return ("iconv.h", "")
+
+	#FIXME: Add -lgiconv
+	have_giconv_lib_iconv = context.TryLink("""
+#include <stdlib.h>
+#include <giconv.h>
+""" + main, '.c')
+	if have_giconv_lib_iconv:
+		context.Result(1)
+		return ("giconv.h", "-lgiconv")
+
+	#FIXME: Add -liconv
+	have_iconv_lib_iconv = context.TryLink("""
+#include <stdlib.h>
+#include <iconv.h>
+"""+main,'.c')
+
+	if have_iconv_lib_iconv:
+		context.Result(1)
+		return ("iconv.h", "-liconv")
+
+	return None
+
+def CheckIconv(context):
+	context.Message("checking for iconv ... ")
+	
+	look_dirs = ['/usr','/usr/local','/sw']
+
+	for p in look_dirs:
+		_CheckIconvPath(context,p) #FIXME: Handle return value
+
+	if context.TryRun("""
+#include <iconv.h>
+main() {
+       iconv_t cd = iconv_open("ASCII", "UCS-2LE");
+       if (cd == 0 || cd == (iconv_t)-1) return -1;
+       return 0;
+}
+""", '.c'):
+		context.Result(1)
+		return (1,[])
+	
+	context.Result(0)
+	return (0,[])
 
-#if not have_iconv:
-#	print "Install iconv for better charset compatibility"
+if hostenv['configure']:
+	conf = hostenv.Configure( custom_tests = { 'CheckIconv' : CheckIconv })
+	(have_iconv,iconv) = conf.CheckIconv()
+	conf.Finish()
 
-iconv = []
+	if not have_iconv:
+		print "Install iconv for better charset compatibility"
+else:
+	iconv = [] # FIXME
 
 charset = hostenv.StaticLibrary('charset',['iconv.c','charcnv.c',iconv])
 Export('charset')
diff --git a/source4/lib/registry/SConscript b/source4/lib/registry/SConscript
index a90557532b..aa2d587260 100644
--- a/source4/lib/registry/SConscript
+++ b/source4/lib/registry/SConscript
@@ -9,4 +9,12 @@ regshell = hostenv.Program('regshell', ['tools/regshell.c',registry,talloc,basic
 regpatch = hostenv.Program('regpatch', ['tools/regpatch.c',registry,talloc,basic,popt_common,popt,param])
 regdiff = hostenv.Program('regdiff', ['tools/regdiff.c',registry,talloc,basic,popt_common,popt,param])
 
+hostenv.StaticLibrary('reg_backend_dir.c')
+hostenv.StaticLibrary('reg_backend_gconf.c')
+hostenv.StaticLibrary('reg_backend_ldb.c')
+hostenv.StaticLibrary('reg_backend_nt4', ['reg_backend_nt4.c',hostenv.TdrMarshaller('regf.idl')])
+hostenv.StaticLibrary('reg_backend_rpc.c')
+hostenv.StaticLibrary('reg_backend_w95.c')
+hostenv.StaticLibrary('reg_backend_wine.c')
+
 hostenv.Install(paths['BINDIR'], [regtree,regshell,regpatch,regdiff])
diff --git a/source4/lib/replace/README b/source4/lib/replace/README
index 6575112eff..eb3360b74a 100644
--- a/source4/lib/replace/README
+++ b/source4/lib/replace/README
@@ -46,6 +46,8 @@ bzero
 strerror
 errno
 mkstemp (a secure one!)
+pread
+pwrite
 
 Types:
 socklen_t
diff --git a/source4/lib/replace/SConscript b/source4/lib/replace/SConscript
index 982120e1bf..a2b3a30e10 100644
--- a/source4/lib/replace/SConscript
+++ b/source4/lib/replace/SConscript
@@ -1,11 +1,31 @@
-Import('hostenv')
+#!/usr/bin/env python
+Import('hostenv defines')
 
 if hostenv['configure']:
 	conf = Configure(hostenv)
-	#FIXME: conf.CheckBrokenInetNtoa() 
+	for f in ['memset','syslog','setnetgrent','getnetgrent','endnetgrent', \
+			'mktemp']:
+		if not conf.CheckFunc(f,'c'):
+			print "Required function `%s' not found" % f
+			exit(1)
+	
 	for f in ['strtoull','__strtoull','strtouq','strtoll','__strtoll','strtoq',
-			  'seteuid','setresuid','setegid','setresgid']:
-		conf.CheckFunc(f,'c')
+			  'seteuid','setresuid','setegid','setresgid','dlsym','dlopen',
+			  'dlerror','dlclose','waitpid','getcwd','strdup','strndup',
+			  'strnlen','strerror','bzero','chroot','strlcpy','strlcat',
+			  'memmove','vsnprintf','asprintf','snprintf','vasprintf',
+			  'innetgr','mktime','rename','ftruncate','chsize','setlinebuf',
+			  'setenv','vsyslog','pread','pwrite']:
+		if conf.CheckFunc(f,'c'):
+			defines['HAVE_' + f.upper()] = 1
+
+	for h in ['dlfcn.h']:
+		if conf.CheckCHeader('dlfcn.h'):
+			defines['HAVE_' + h.upper().replace('.','_').replace('/','_')] = 1
+
+	if not conf.CheckType('socklen_t'):
+		defines['socklen_t'] = 'int'
+
 	conf.Finish()
 
 hostenv.StaticLibrary('repdir', ['repdir/repdir.c'])
diff --git a/source4/lib/replace/config.m4 b/source4/lib/replace/config.m4
index ac4db9ed5b..07fbed9d91 100644
--- a/source4/lib/replace/config.m4
+++ b/source4/lib/replace/config.m4
@@ -22,6 +22,7 @@ AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq)
 AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
 AC_CHECK_FUNCS(timegm setenv vsyslog setlinebuf mktime ftruncate chsize rename)
 AC_CHECK_FUNCS(waitpid strnlen strlcpy strlcat innetgr initgroups memmove strdup)
+AC_CHECK_FUNCS(pread pwrite)
 AC_HAVE_DECL(setresuid, [#include <unistd.h>])
 AC_HAVE_DECL(setresgid, [#include <unistd.h>])
 AC_HAVE_DECL(errno, [#include <errno.h>])
diff --git a/source4/lib/replace/replace.c b/source4/lib/replace/replace.c
index aa79f23fd0..c53b5a5727 100644
--- a/source4/lib/replace/replace.c
+++ b/source4/lib/replace/replace.c
@@ -523,3 +523,25 @@ int rep_mkstemp(char *template)
 	return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
 }
 #endif
+
+#ifndef HAVE_PREAD
+static ssize_t pread(int __fd, void *__buf, size_t __nbytes, off_t __offset)
+{
+	if (lseek(__fd, __offset, SEEK_SET) != __offset) {
+		return -1;
+	}
+	return read(__fd, __buf, __nbytes);
+}
+#endif
+
+#ifndef HAVE_PWRITE
+static ssize_t pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset)
+{
+	if (lseek(__fd, __offset, SEEK_SET) != __offset) {
+		return -1;
+	}
+	return write(__fd, __buf, __nbytes);
+}
+#endif
+
+
diff --git a/source4/lib/socket/SConscript b/source4/lib/socket/SConscript
index db449592c2..c4e791467a 100644
--- a/source4/lib/socket/SConscript
+++ b/source4/lib/socket/SConscript
@@ -1,5 +1,64 @@
+#!/usr/bin/env python
 Import('hostenv')
+
+if hostenv['configure']:
+	conf = hostenv.Configure()
+	conf.CheckCHeader('sys/socket.h')
+	conf.CheckCHeader('sys/sockio.h')
+	conf.CheckCHeader('sys/un.h')
+	#HAVE_SOCK_SIN_LEN
+	conf.TryCompile("""
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+int main(void)
+{
+	struct sockaddr_in sock; sock.sin_len = sizeof(sock);
+	return 0;
+}""", '.c')
+
+	#HAVE_UNIXSOCKET
+	conf.TryCompile("""
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <sys/socket.h>
+#include <sys/un.h>],
+
+int main(void)
+{
+  struct sockaddr_un sunaddr; 
+  sunaddr.sun_family = AF_UNIX;
+  return 0;
+}""", '.c')
+
+	# HAVE_IPV6
+	conf.CheckFunc('gethostbyname2')
+
+	# The following test taken from the cvs sources
+	# If we can't find connect, try looking in -lsocket, -lnsl, and -linet.
+	# The Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
+	# libsocket.so which has a bad implementation of gethostbyname (it
+	# only looks in /etc/hosts), so we only look for -lsocket if we need
+	# it.
+	
+	connect_libs = []
+
+	if not conf.CheckFunc('connect'):
+		for l in ['nsl_s','nsl','socket','inet']:
+			if conf.CheckLib(l, 'connect'):
+				connect_libs.append(l)
+				break
+
+	# HAVE_WORKING_AF_LOCAL
+	# FIXME: Try compiling build/tests/unixsock.c
+
+
+	conf.Finish()
+
 hostenv.StaticLibrary('socket_ipv4.c')
 hostenv.StaticLibrary('socket_ipv6.c')
 hostenv.StaticLibrary('socket_unix.c')
 hostenv.StaticLibrary('socket', ['socket.c','access.c','connect.c'])
+