build: started a library of common config tests for s3/s4

Pair-Programmed-With: Kai Blin <kai@samba.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/buildtools/wafsamba/samba_conftests.py b/buildtools/wafsamba/samba_conftests.py
new file mode 100644
index 0000000000..347142c76c
--- /dev/null
+++ b/buildtools/wafsamba/samba_conftests.py
@@ -0,0 +1,64 @@
+# a set of config tests that use the samba_autoconf functions
+# to test for commonly needed configuration options
+
+
+@conf
+def CHECK_ICONV(conf, define='HAVE_NATIVE_ICONV'):
+    '''check if the iconv library is installed
+       optionally pass a define'''
+    if conf.CHECK_FUNCS_IN('iconv_open', 'iconv', checklibc=True, headers='iconv.h'):
+        conf.DEFINE(define, 1)
+        return True
+    return False
+
+
+@conf
+def CHECK_LARGEFILE(conf, define='HAVE_LARGEFILE'):
+    '''see what we need for largefile support'''
+    if conf.CHECK_CODE('return !(sizeof(off_t) >= 8)',
+                       define,
+                       execute=True,
+                       msg='Checking for large file support'):
+        return True
+    if conf.CHECK_CODE('return !(sizeof(off_t) >= 8)',
+                       define,
+                       execute=True,
+                       cflags='-D_FILE_OFFSET_BITS=64',
+                       msg='Checking for -D_FILE_OFFSET_BITS=64'):
+        conf.DEFINE('_FILE_OFFSET_BITS', 64)
+        return True
+    return False
+
+
+@conf
+def CHECK_C_PROTOTYPE(conf, function, prototype, define, headers=None):
+    '''verify that a C prototype matches the one on the current system'''
+    if not conf.CHECK_DECLS(function, headers=headers):
+        return False
+    return conf.CHECK_CODE('%s; void *_x = (void *)%s' % (prototype, function),
+                           define=define,
+                           local_include=False,
+                           headers=headers,
+                           msg='Checking C prototype for %s' % function)
+
+
+@conf
+def CHECK_CHARSET_EXISTS(conf, charset, outcharset='UCS2-LE', libs=None, headers=None, define=None):
+    '''check that a named charset is able to be used with iconv_open() for conversion
+    to a target charset
+    '''
+    msg = 'Checking if can we convert from %s to %s' % (charset, outcharset)
+    if define is None:
+        define = 'HAVE_CHARSET_%s' % charset.upper().replace('-','_')
+    return conf.CHECK_CODE('''
+                           iconv_t cd = iconv_open("%s", "%s");
+                           if (cd == 0 || cd == (iconv_t)-1) {
+                             return -1;
+                             }
+                             return 0;
+                             ''' % (charset, outcharset),
+                           define=define,
+                           execute=True,
+                           libs=libs,
+                           msg=msg,
+                           headers=headers)