blob: 6c8c4c67961f7fc9209857f05e88c61a05fd9772 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
# Building GHC
* Add the following to _build/hadrian.settings
```
stage1.*.ghc.hs.opts += -finfo-table-map -fdistinct-constructor-tables
```
* Build GHC as normal
```
./hadrian/build -j8
```
* The result is a ghc-debug enabled compiler
# Building a debugger
* Use the compiler you just built to build ghc-debug
```
cd ghc-debug
cabal update
cabal new-build debugger -w ../_build/stage1/bin/ghc
```
# Running the debugger
Modify `test/Test.hs` to implement the debugging thing you want to do. Perhaps
start with `p30`, which is a program to generate a profile.
* Start the process you want to debug
```
GHC_DEBUG_SOCKET=/tmp/ghc-debug build-cabal
```
* Start the debugger
```
cabal new-run debugger -w ...
```
* Open a ticket about the memory issue you find.
|
