From d5b7c8a9727ebca2e7d29dd44c44f8724c2667cb Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Fri, 10 Mar 2023 11:27:04 -0800
Subject: [PATCH] RJIT: Always enable --rjit-dump-disasm

---
 configure.ac     |  6 +++---
 doc/rjit/rjit.md | 33 +++++++++++++++++++++------------
 2 files changed, 24 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index 3f007f8a40..d172c056a0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3867,11 +3867,11 @@ AC_ARG_ENABLE(rjit,
 
 AS_CASE(["$RJIT_SUPPORT"],
 [yes|dev], [
+    # Link libcapstone for --rjit-dump-disasm
+    AC_CHECK_LIB([capstone], [cs_disasm])
+
     AS_CASE(["$RJIT_SUPPORT"],
     [dev], [
-        # Link libcapstone for --rjit-dump-disasm
-        AC_CHECK_LIB([capstone], [cs_disasm])
-
         # Enable RJIT_STATS (vm_insns_count of --rjit-stats)
         AC_DEFINE(RUBY_DEBUG, 1)
     ])
diff --git a/doc/rjit/rjit.md b/doc/rjit/rjit.md
index 273fdbeb9d..77be56bfb5 100644
--- a/doc/rjit/rjit.md
+++ b/doc/rjit/rjit.md
@@ -14,15 +14,7 @@ The following platforms are assumed to work. `linux-x86_64` is tested on CI.
 * OS: Linux, macOS, BSD
 * Arch: x86\_64
 
-## Developing RJIT
-
-### Bindgen
-
-If you see an "RJIT bindgen" GitHub Actions failure, please commit the `git diff` shown on the failed job.
-
-For doing the same thing locally, run `make rjit-bindgen` after installing libclang.
-macOS seems to have libclang by default. On Ubuntu, you can install it with `apt install libclang1`.
-
+## configure
 ### --enable-rjit
 
 On supported platforms, `--enable-rjit` is set by default. You usually don't need to specify this.
@@ -30,7 +22,24 @@ You may still manually pass `--enable-rjit` to try RJIT on unsupported platforms
 
 ### --enable-rjit=dev
 
-`--enable-rjit=dev` makes the interpreter slower, but enables the following two features:
+`--enable-rjit=dev` makes the interpreter slower, but enables `ruby --rjit-stats` to work.
 
-* `--rjit-dump-disasm`: Dump all JIT code.
-* `--rjit-stats`: Print RJIT stats.
+## make
+### rjit-bindgen
+
+If you see an "RJIT bindgen" GitHub Actions failure, please commit the `git diff` shown on the failed job.
+
+For doing the same thing locally, run `make rjit-bindgen` after installing libclang.
+macOS seems to have libclang by default. On Ubuntu, you can install it with `apt install libclang1`.
+
+## ruby
+### --rjit-stats
+
+This prints RJIT stats at exit. Available with `--enable-rjit=dev` on configure.
+
+### --rjit-dump-disasm
+
+This dumps all JIT code. You need to install libcapstone before configure.
+
+* Ubuntu: `sudo apt-get install -y libcapstone-dev`
+* macOS: `brew install capstone`