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| author | Bob Friesenhahn <bfriesen@simple.dallas.tx.us> | 2007-06-26 22:52:05 +0000 |
|---|---|---|
| committer | Bob Friesenhahn <bfriesen@simple.dallas.tx.us> | 2007-06-26 22:52:05 +0000 |
| commit | 50168166174a8de4445ecd41409b01cba4b1a1dd (patch) | |
| tree | 85c1aa36737b859c00f4e2b9a511f021726bfcfc /configure.ac | |
| parent | 671e3708388f86595d46c3d484a98a8f84edbcf8 (diff) | |
| download | libtiff-git-50168166174a8de4445ecd41409b01cba4b1a1dd.tar.gz | |
Added support for a TIFF_SSIZE_T in order to return memory sizes but still
allow returning -1 for errors.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/configure.ac b/configure.ac index 57a9e47c..c6a94e79 100644 --- a/configure.ac +++ b/configure.ac @@ -208,6 +208,19 @@ fi AC_MSG_RESULT($UINT64_T) AC_DEFINE_UNQUOTED(TIFF_UINT64_T,$UINT64_T,[Unsigned 64-bit type]) +# Determine TIFF equivalent of ssize_t +AC_MSG_CHECKING(for signed size type) +SSIZE_T='unknown' +if test $ac_cv_sizeof_signed_long -eq $ac_cv_sizeof_unsigned_char_p +then + SSIZE_T='signed long' +elif test $ac_cv_sizeof_signed_long_long -eq $ac_cv_sizeof_unsigned_char_p +then + SSIZE_T='signed long long' +fi +AC_MSG_RESULT($SSIZE_T) +AC_DEFINE_UNQUOTED(TIFF_SSIZE_T,$SSIZE_T,[Signed size type]) + # Determine the type to use for the difference between two pointers. # We will default to the POSIX ptrdiff_t if it is available, but will # be prepared for the case when it is not. @@ -215,13 +228,7 @@ PTRDIFF_T='unknown' AC_CHECK_TYPE(ptrdiff_t,[PTRDIFF_T=ptrdiff_t]) if test $PTRDIFF_T = unknown then - if test $ac_cv_sizeof_signed_long -eq $ac_cv_sizeof_unsigned_char_p - then - PTRDIFF_T='signed long' - elif test $ac_cv_sizeof_signed_long_long -eq $ac_cv_sizeof_unsigned_char_p - then - PTRDIFF_T='signed long long' - fi + PTRDIFF_T=$SSIZE_T fi AC_MSG_CHECKING(for pointer difference type) AC_MSG_RESULT($PTRDIFF_T) |