[project @ 1996-01-08 20:28:12 by partain]

[ghc-hetmet.git] / ghc / compiler / yaccParser / README.debug

diff --git a/ghc/compiler/yaccParser/README.debug b/ghc/compiler/yaccParser/README.debug
new file mode 100644 (file)
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--- /dev/null
+++ b/ghc/compiler/yaccParser/README.debug
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+If you want to debug...
+
+* the lexer:
+
+    run "flex" with the -d flag; compile as normal thereafter
+
+* the parser:
+
+    compile hsparser.tab.c and main.c with EXTRA_CC_OPTS=-DHSP_DEBUG
+
+    run hsp with -D; it's dumping the output into *stdout*,
+    so you have to do something weird to look at it.