configure.ac: Ask users to build 64-bit Solaris binaries.

By default, the compilers will build 32-bit binaries on Solaris. This is
sub-optimal for us, for example reading /proc entries for 64-bit
processes doesn't work when collectd is 32-bit.

Fixes: #1077

diff --git a/configure.ac b/configure.ac
index 461f24c..6460965 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -113,7 +113,20 @@ if test "x$ac_system" = "xSolaris"
 then
        AC_DEFINE(_POSIX_PTHREAD_SEMANTICS, 1, [Define to enforce POSIX thread semantics under Solaris.])
        AC_DEFINE(_REENTRANT,               1, [Define to enable reentrancy interfaces.])
+
+       AC_MSG_CHECKING([whether compiler builds 64bit binaries])
+       AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
+                          #ifndef _LP64
+                          # error "Compiler not in 64bit mode."
+                          #endif
+                          ])],
+                          [AC_MSG_RESULT([yes])],
+                          [
+                           AC_MSG_RESULT([no])
+                           AC_MSG_NOTICE([Solaris detected. Please consider building a 64-bit binary.])
+                          ])
 fi
+
 if test "x$ac_system" = "xAIX"
 then
        AC_DEFINE(_THREAD_SAFE_ERRNO, 1, [Define to use the thread-safe version of errno under AIX.])
@@ -394,18 +407,6 @@ AC_CHECK_HEADERS(sys/swap.h vm/anon.h, [], [have_sys_swap_h="no"],
 #endif
 ])
 
-if test "x$have_sys_swap_h$ac_system" = "xnoSolaris"
-then
-       hint_64=""
-       if test "x$GCC" = "xyes"
-       then
-               hint_64="CFLAGS='-m64'"
-       else
-               hint_64="CFLAGS='-xarch=v9'"
-       fi
-       AC_MSG_NOTICE([Solaris detected and sys/swap.h not usable. Try building a 64-bit binary ($hint_64 ./configure).])
-fi
-
 # For load module
 # For the processes plugin
 # For users module