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-rw-r--r--apt-pkg/contrib/mmap.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index aa52b4c30..4d5fcf71e 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -317,7 +317,7 @@ unsigned long DynamicMMap::WriteString(const char *String,
but why we should not at least try to grow it before we give up? */
bool DynamicMMap::Grow()
{
-#ifdef _POSIX_MAPPED_FILES
+#if defined(_POSIX_MAPPED_FILES) && defined(__linux__)
unsigned long newSize = WorkSpace + 1024*1024;
if(Fd != 0)