Re: [PATCH] new: Detect dirent.d_type support at configure time
authorJani Nikula <jani@nikula.org>
Wed, 1 Jan 2014 12:53:24 +0000 (14:53 +0200)
committerW. Trevor King <wking@tremily.us>
Fri, 7 Nov 2014 17:58:49 +0000 (09:58 -0800)
67/eba2f0055881e2d9466aebeac92ae191f87126 [new file with mode: 0644]

diff --git a/67/eba2f0055881e2d9466aebeac92ae191f87126 b/67/eba2f0055881e2d9466aebeac92ae191f87126
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+       Wed, 01 Jan 2014 04:53:26 -0800 (PST)\r
+From: Jani Nikula <jani@nikula.org>\r
+To: Austin Clements <amdragon@MIT.EDU>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH] new: Detect dirent.d_type support at configure time\r
+In-Reply-To: <1385262952-29240-1-git-send-email-amdragon@mit.edu>\r
+References: <1385262952-29240-1-git-send-email-amdragon@mit.edu>\r
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+       (x86_64-pc-linux-gnu)\r
+Date: Wed, 01 Jan 2014 14:53:24 +0200\r
+Message-ID: <87txdn2797.fsf@nikula.org>\r
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+\r
+On Sun, 24 Nov 2013, Austin Clements <amdragon@MIT.EDU> wrote:\r
+> Support for dirent.d_type is OS-specific.  Previously, we used\r
+> _DIRENT_HAVE_D_TYPE to detect support for this, but this is apparently\r
+> a glic-ism (FreeBSD, for example, supports d_type, but does not define\r
+> this).  Since there's no cross-platform way to detect support for\r
+> dirent.d_type, detect it using a test compile at configure time.\r
+> ---\r
+>  compat/have_d_type.c | 10 ++++++++++\r
+>  configure            | 16 ++++++++++++++++\r
+>  notmuch-new.c        |  2 +-\r
+>  3 files changed, 27 insertions(+), 1 deletion(-)\r
+>  create mode 100644 compat/have_d_type.c\r
+>\r
+> diff --git a/compat/have_d_type.c b/compat/have_d_type.c\r
+> new file mode 100644\r
+> index 0000000..9ca6c6e\r
+> --- /dev/null\r
+> +++ b/compat/have_d_type.c\r
+> @@ -0,0 +1,10 @@\r
+> +#include <dirent.h>\r
+> +\r
+> +int main()\r
+> +{\r
+> +    struct dirent ent;\r
+> +\r
+> +    (void) ent.d_type;\r
+> +\r
+> +    return 0;\r
+> +}\r
+> diff --git a/configure b/configure\r
+> index 1a8e939..d2d193c 100755\r
+> --- a/configure\r
+> +++ b/configure\r
+> @@ -557,6 +557,17 @@ else\r
+>  fi\r
+>  rm -f compat/have_timegm\r
+>  \r
+> +printf "Checking for dirent.d_type... "\r
+> +if ${CC} -o compat/have_d_type "$srcdir"/compat/have_d_type.c > /dev/null 2>&1\r
+> +then\r
+> +    printf "Yes.\n"\r
+> +    have_d_type="1"\r
+> +else\r
+> +    printf "No (will use stat instead).\n"\r
+> +    have_d_type="0"\r
+> +fi\r
+> +rm -f compat/have_d_type\r
+> +\r
+>  printf "Checking for standard version of getpwuid_r... "\r
+>  if ${CC} -o compat/check_getpwuid "$srcdir"/compat/check_getpwuid.c > /dev/null 2>&1\r
+>  then\r
+> @@ -745,6 +756,9 @@ HAVE_STRCASESTR = ${have_strcasestr}\r
+>  # build its own version)\r
+>  HAVE_STRSEP = ${have_strsep}\r
+>  \r
+> +# Whether struct dirent has d_type (if not, then notmuch will use stat)\r
+> +HAVE_D_TYPE = ${have_d_type}\r
+> +\r
+>  # Whether the Xapian version in use supports compaction\r
+>  HAVE_XAPIAN_COMPACT = ${have_xapian_compact}\r
+>  \r
+> @@ -805,6 +819,7 @@ CONFIGURE_CFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS)      \\\r
+>                 \$(VALGRIND_CFLAGS)                                   \\\r
+>                 -DHAVE_STRCASESTR=\$(HAVE_STRCASESTR)                 \\\r
+>                 -DHAVE_STRSEP=\$(HAVE_STRSEP)                         \\\r
+> +               -DHAVE_D_TYPE=\$(HAVE_D_TYPE)                         \\\r
+>                 -DSTD_GETPWUID=\$(STD_GETPWUID)                       \\\r
+>                 -DSTD_ASCTIME=\$(STD_ASCTIME)                         \\\r
+>                 -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT)\r
+> @@ -813,6 +828,7 @@ CONFIGURE_CXXFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS)    \\\r
+>                   \$(VALGRIND_CFLAGS) \$(XAPIAN_CXXFLAGS)             \\\r
+>                   -DHAVE_STRCASESTR=\$(HAVE_STRCASESTR)               \\\r
+>                   -DHAVE_STRSEP=\$(HAVE_STRSEP)                       \\\r
+> +                 -DHAVE_D_TYPE=\$(HAVE_D_TYPE)                       \\\r
+>                   -DSTD_GETPWUID=\$(STD_GETPWUID)                     \\\r
+>                   -DSTD_ASCTIME=\$(STD_ASCTIME)                       \\\r
+>                   -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT)\r
+\r
+The patch looks good, but the above two hunks no longer apply\r
+cleanly. Please repost.\r
+\r
+BR,\r
+Jani.\r
+\r
+\r
+\r
+> diff --git a/notmuch-new.c b/notmuch-new.c\r
+> index ba05cb4..423e188 100644\r
+> --- a/notmuch-new.c\r
+> +++ b/notmuch-new.c\r
+> @@ -167,7 +167,7 @@ dirent_type (const char *path, const struct dirent *entry)\r
+>      char *abspath;\r
+>      int err, saved_errno;\r
+>  \r
+> -#ifdef _DIRENT_HAVE_D_TYPE\r
+> +#if HAVE_D_TYPE\r
+>      /* Mapping from d_type to stat mode_t.  We omit DT_LNK so that\r
+>       * we'll fall through to stat and get the real file type. */\r
+>      static const mode_t modes[] = {\r
+> -- \r
+> 1.8.4.rc3\r
+>\r
+> _______________________________________________\r
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