maint: ensure PATH_MAX is set correctly

This reverts part of commit v8.12-103-g54cbe6e.

* src/system.h: Include gnulib's pathmax.h to honor
system specific limits, and then we set PATH_MAX only if needed.
Note pathmax.h no longer uses pathconf ("/", _PC_PATH_MAX).
Note I didn't reinstate the comments about limits.h inclusion
order, because pathmax.h includes limits.h anyway.

diff --git a/bootstrap.conf b/bootstrap.conf
index 3980259..bb414ef 100644 (file)
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -171,6 +171,7 @@ gnulib_modules="
   nproc
   obstack
   parse-datetime
+  pathmax
   perl
   physmem
   pipe

diff --git a/src/system.h b/src/system.h
index 49cd08a..93d48c5 100644 (file)
--- a/src/system.h
+++ b/src/system.h
@@ -41,6 +41,8 @@ you must include <sys/types.h> before including this file
 #include <unistd.h>
 
 #include <limits.h>
+
+#include "pathmax.h"
 #ifndef PATH_MAX
 # define PATH_MAX 8192
 #endif