From 711ebec4c2d54428418642a09f3f30b53160c34c Mon Sep 17 00:00:00 2001
From: Patryk Wychowaniec <pwychowaniec@pm.me>
Date: Sat, 1 Jul 2023 18:30:32 +0200
Subject: [PATCH] readme: Add a section on CMake usage

---
 README.md     | 25 +++++++++++++++++++++++++
 README.tpl.md | 25 +++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/README.md b/README.md
index 6a97906..766edc3 100644
--- a/README.md
+++ b/README.md
@@ -287,6 +287,31 @@ naersk.buildPackage {
 }
 ```
 
+### Using CMake
+
+If your application uses CMake, the build process might fail, saying:
+
+```
+CMake Error: The current CMakeCache.txt directory ... is different than the directory ... where CMakeCache.txt was created.
+```
+
+You can fix this problem by removing stale `CMakeCache.txt` files before the
+build:
+
+``` nix
+naersk.buildPackage {
+  # ...
+  
+  preBuild = ''
+    find \
+        -name CMakeCache.txt \
+        -exec rm {} \;
+  '';
+}
+```
+
+([context](https://github.com/nix-community/naersk/pull/288))
+
 ### Using OpenSSL
 
 If your application uses OpenSSL (making the build process fail), try:
diff --git a/README.tpl.md b/README.tpl.md
index fb232c8..907e870 100644
--- a/README.tpl.md
+++ b/README.tpl.md
@@ -249,6 +249,31 @@ naersk.buildPackage {
 }
 ```
 
+### Using CMake
+
+If your application uses CMake, the build process might fail, saying:
+
+```
+CMake Error: The current CMakeCache.txt directory ... is different than the directory ... where CMakeCache.txt was created.
+```
+
+You can fix this problem by removing stale `CMakeCache.txt` files before the
+build:
+
+``` nix
+naersk.buildPackage {
+  # ...
+  
+  preBuild = ''
+    find \
+        -name CMakeCache.txt \
+        -exec rm {} \;
+  '';
+}
+```
+
+([context](https://github.com/nix-community/naersk/pull/288))
+
 ### Using OpenSSL
 
 If your application uses OpenSSL (making the build process fail), try: