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author | Ludovic Courtès <ludo@gnu.org> | 2010-12-07 21:43:04 +0100 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2010-12-07 23:13:19 +0100 |
commit | 0f00f2c33a85842a9611ed63f07e915ea9fd60de (patch) | |
tree | a02ec2b230021798eb854693c6c9270c6a1f87e6 /m4/lstat.m4 | |
parent | cb26e97a88e90d04e6d4efe3de0de92dea53d1e5 (diff) | |
download | guile-0f00f2c33a85842a9611ed63f07e915ea9fd60de.tar.gz |
Use Gnulib's `nproc'.
This updates Gnulib to v0.0-4496-g6491120.
* m4/gnulib-cache.m4: Add `nproc'.
Diffstat (limited to 'm4/lstat.m4')
-rw-r--r-- | m4/lstat.m4 | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/m4/lstat.m4 b/m4/lstat.m4 index 5dbd16e28..236af540e 100644 --- a/m4/lstat.m4 +++ b/m4/lstat.m4 @@ -1,4 +1,4 @@ -# serial 20 +# serial 21 # Copyright (C) 1997-2001, 2003-2010 Free Software Foundation, Inc. # @@ -26,3 +26,44 @@ AC_DEFUN([gl_FUNC_LSTAT], HAVE_LSTAT=0 fi ]) + +# Redefine AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK, because it is no longer +# maintained in Autoconf. +AC_DEFUN([AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK], +[ + AC_CACHE_CHECK([whether lstat correctly handles trailing slash], + [ac_cv_func_lstat_dereferences_slashed_symlink], + [rm -f conftest.sym conftest.file + echo >conftest.file + if test "$as_ln_s" = "ln -s" && ln -s conftest.file conftest.sym; then + AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [AC_INCLUDES_DEFAULT], + [[struct stat sbuf; + /* Linux will dereference the symlink and fail, as required by + POSIX. That is better in the sense that it means we will not + have to compile and use the lstat wrapper. */ + return lstat ("conftest.sym/", &sbuf) == 0; + ]])], + [ac_cv_func_lstat_dereferences_slashed_symlink=yes], + [ac_cv_func_lstat_dereferences_slashed_symlink=no], + [# When cross-compiling, be pessimistic so we will end up using the + # replacement version of lstat that checks for trailing slashes and + # calls lstat a second time when necessary. + ac_cv_func_lstat_dereferences_slashed_symlink=no + ]) + else + # If the 'ln -s' command failed, then we probably don't even + # have an lstat function. + ac_cv_func_lstat_dereferences_slashed_symlink=no + fi + rm -f conftest.sym conftest.file + ]) + test $ac_cv_func_lstat_dereferences_slashed_symlink = yes && + AC_DEFINE_UNQUOTED([LSTAT_FOLLOWS_SLASHED_SYMLINK], [1], + [Define to 1 if `lstat' dereferences a symlink specified + with a trailing slash.]) + if test "x$ac_cv_func_lstat_dereferences_slashed_symlink" = xno; then + AC_LIBOBJ([lstat]) + fi +]) |