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-rw-r--r--tool/vdbe-compress.tcl12
1 files changed, 11 insertions, 1 deletions
diff --git a/tool/vdbe-compress.tcl b/tool/vdbe-compress.tcl
index 95cc1eb..a349830 100644
--- a/tool/vdbe-compress.tcl
+++ b/tool/vdbe-compress.tcl
@@ -13,7 +13,7 @@
# Script usage:
#
# mv vdbe.c vdbe.c.template
-# tclsh vdbe-compress.tcl <vdbe.c.template >vdbe.c
+# tclsh vdbe-compress.tcl $CFLAGS <vdbe.c.template >vdbe.c
#
# Modifications made:
#
@@ -42,6 +42,16 @@ set unionDef {} ;# C code of the union
set afterUnion {} ;# C code after the union
set sCtr 0 ;# Context counter
+# If the SQLITE_SMALL_STACK compile-time option is missing, then
+# this transformation becomes a no-op.
+#
+if {![regexp {SQLITE_SMALL_STACK} $argv]} {
+ while {![eof stdin]} {
+ puts [gets stdin]
+ }
+ exit
+}
+
# Read program text up to the spot where the union should be
# inserted.
#