[PATCH 3/3] ccache: Add 030-make-documentation-optional.patch

[David Adair]

Added patch 030-make-documentation-optional.patch to include upstream
commit: b96ca763c453a602 which allows us to avoid the build failures
due to non-ascii characters in the documentation.  Since we don't need
docs anyway it is easier to just build with -D ENABLE_DOCUMENTATION=OFF
rather than attempt to fix the docs which break from time to time.

This patch is only required for the 21.02 branch since other branches
do not have the non-ascii character build failures at this time.  By the
time they *did* have a problem they would also include this change.

Note: patch itself is not my work it is:
Signed-off-by: Petr Štetiar <ynezz at true.cz>

Signed-off-by: David Adair <djabhead at aol.com>
---
 .../030-make-documentation-optional.patch     | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 tools/ccache/patches/030-make-documentation-optional.patch

diff --git a/tools/ccache/patches/030-make-documentation-optional.patch
b/tools/ccache/patches/030-make-documentation-optional.patch
new file mode 100644
index 0000000000..ccd25067cb
--- /dev/null
+++ b/tools/ccache/patches/030-make-documentation-optional.patch
@@ -0,0 +1,37 @@
+From b96ca763c453a602b5516b4b9ca5e2829528e318 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz at true.cz>
+Date: Mon, 3 May 2021 18:44:53 +0200
+Subject: [PATCH] CMake: make build of documentation optional (#842)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+So we don't need to support corner cases as for example one fixed in
+commit f6202db308e3 ("doc/MANUAL.adoc: Don't use non-ASCII quotes
+(#761)") when the documentation is actually not needed at all as ccache
+is used as a build tool only.
+
+Signed-off-by: Petr Štetiar <ynezz at true.cz>
+---
+ CMakeLists.txt | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 0825f2af..e186e812 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -133,7 +133,10 @@ target_link_libraries(ccache PRIVATE standard_settings
standard_warnings ccache_
+ #
+ # Documentation
+ #
+-add_subdirectory(doc)
++option(ENABLE_DOCUMENTATION "Enable documentation" ON)
++if(ENABLE_DOCUMENTATION)
++  add_subdirectory(doc)
++endif()
+ 
+ #
+ # Installation
+-- 
+2.27.0
+
-- 
2.27.0