Changes between Version 35 and Version 36 of CommonProblems

Timestamp:

07/27/10 10:50:33 (5 years ago)

Author:

michaelvoliveira

Comment:

--

CommonProblems

@@ -114 +114 @@
  AC_CHECK_LIB(nsl, inet_ntoa)
 }}}
+
+= Common Porting Problems =
+
+This page serves to collect information about common problems encountered when porting applications/libraries to the Haiku/BeOS platform. The problems should be identified by the (compiler) errors that typify them.
+
+Information about BeOS's POSIX compatibility, see [wiki:BeOSPosix].
+
+=== no undefined references allowed in i586-pc-beos shared libraries ===
+
+ports: [wiki:dev-util/subversion], [wiki:dev-libs/apr]
+
+You need to pass the {{{-no-undefined}}} option to libtool
+
+Alternatively, libtool can be patched to always exhibit this behavior, at the risk of breaking static compilation when dynamic linking fails. -- andreasf
+
+=== (stat) structure has no member named `st_blocks' (Now fixed in Haiku) ===
+
+ports: [wiki:app-arch/tar] (make check), [wiki:net-fs/samba], [wiki:dev-util/cvs]
+
+The stat struct in sys/stat.h in BeOS ~~and Haiku~~ ([http://dev.haiku-os.org/ticket/2261 Haiku now has it] [http://dev.haiku-os.org/changeset/27791 as seen here]) doesn't have an st_blocks member. In projects with autoconf, you can check for HAVE_STAT_ST_BLOCKS.
+
+http://lists.samba.org/archive/samba-technical/2005-January/039275.html
+
+=== -lm ===
+
+ports: [wiki:dev-lang/lua], others
+
+The -lm refers to libm which isn't needed for Haiku or BeOS as the math library is part of libroot and linked by default
+
+Please DO NOT create a shortcut of libroot.so and rename to libm.so on gcc4 and gcc2 lib directory (Haiku hybrids case) or change the -lm references in the configure file to -lroot.
+If the port is using the autotools chances are this can be fixed by doing an AC_CHECK_LIB for cos in m and then setting a variable such as LIBM or MLIB to by ="-lm" if true or "" if not.
+
+Here is some explanation:
+http://www.freelists.org/archives/haiku-development/04-2008/msg00904.html
+
+=== -lc ===
+
+This sometimes turns up, and I think it is due to the port using an older libtool.  Try running libtoolize --force --copy --install, aclocal, autoconf and automake before ./configure to see if that clears it up.
+
+=== conflicting types for `restrict' (Now fixed in Haiku) ===
+
+/boot/develop/headers/posix/search.h:35: conflicting types for `restrict'
+/boot/develop/headers/posix/search.h:35: previous declaration of `restrict'
+This seems to be an issue with Haiku and has been reported [http://dev.haiku-os.org/ticket/2262 Haiku-2262]
+This has been fixed in Haiku.  If using a version  prior to the fix you can copy the search.h file over the one in your headers/posix folder.
+
+=== GCC 2.9 related build problems ===
+
+output_operand_lossage `invalid expression as operand'
+
+This can be avoided by not passing the '-g' option to gcc for this test.
+
+
+=== GCC 4.3 related build problems ===
+
+Typical errors look like these:
+
+error: 'find' is not a member of 'std'
+
+error: 'exit' was not declared in this scope
+
+Please take a look at: http://www.cyrius.com/journal/2007/05/10#gcc-4.3-include
+
+or
+
+http://www.comp.leeds.ac.uk/hannah/cpp/errors.html
+
+=== MSG_NOSIGNAL undeclared ===
+
+Add below to header/source file.
+
+{{{
+#ifndef MSG_NOSIGNAL 
+#define MSG_NOSIGNAL 0 
+#endif
+}}}
+
+=== O_NOATIME undeclared ===
+
+Add below to header/source file.
+
+{{{
+#include <fcntl.h>
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE // for O_NOATIME
+#define O_NOATIME 01000000
+#endif
+}}}
+
+
+=== DT_DIR undeclared ===
+
+The use of DT_DIR doesn't work on non-ext* filesystems
+
+So replace for
+
+{{{
+#ifndef DT_DIR
+/* dirent.d_type is a BSD extension, not part of POSIX */
+#include <sys/stat.h>
+#include <string.h>
+
+static int
+is_dir (const char *path, const char *name)
+{
+  int len1 = strlen(path);
+  int len2 = strlen(name);
+
+  char pathname[len1 + 1 + len2 + 1 + 13];
+  strcpy (pathname, path);
+
+  /* Avoid UNC-path "//name" on Cygwin.  */
+  if (len1 > 0 && pathname[len1 - 1] != '/')
+    strcat (pathname, "/");
+
+  strcat (pathname, name);
+
+  struct stat st;
+  if (stat (pathname, &st))
+    return 0;
+  return S_ISDIR (st.st_mode);
+}
+#endif
+}}}
+
+And after a check function
+
+{{{
+info.dir = !! is_dir (path, de->d_name);
+}}}
+
+
+