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Add the ability to pass a value with the -d flag

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This allows the end user to use the {.magic: "IntDefine"/"StrDefine"}
pragmas to pass values into code at compile time.  This has a nice side
effect of also allowing/requiring a default value to be assigned in the
code (see osalloc.nim/StandaloneHeapSize for an example)
This commit is contained in:
Jeff Ciesielski 2016-07-04 18:11:25 -04:00
commit 94d1aa5109
7 changed files with 32 additions and 7 deletions
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3
lib/system/osalloc.nim
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@ -150,8 +150,9 @@ elif defined(windows):
#VirtualFree(p, size, MEM_DECOMMIT)
elif hostOS == "standalone":
const StandaloneHeapSize {.magic: "IntDefine"}: int = 1024 * PageSize
var
theHeap: array[1024*PageSize, float64] # 'float64' for alignment
theHeap: array[StandaloneHeapSize, float64] # 'float64' for alignment
bumpPointer = cast[int](addr theHeap)
proc osAllocPages(size: int): pointer {.inline.} =