commit:     c0068bb3863bdee6d3d01f78b7d7ea6a8f23261c
Author:     Matt Turner <mattst88 <AT> gentoo <DOT> org>
AuthorDate: Fri Apr 16 13:23:24 2021 +0000
Commit:     Matt Turner <mattst88 <AT> gentoo <DOT> org>
CommitDate: Fri Apr 16 13:23:34 2021 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c0068bb3

mail-client/evolution: Add patch for cmake-3.20 compat

Closes: https://bugs.gentoo.org/781971
Signed-off-by: Matt Turner <mattst88 <AT> gentoo.org>

 mail-client/evolution/evolution-3.38.4.ebuild      |  2 +
 ...tions.cmake-Correct-variable-name-compari.patch | 75 ++++++++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/mail-client/evolution/evolution-3.38.4.ebuild 
b/mail-client/evolution/evolution-3.38.4.ebuild
index 3a5b6390343..3dbfedc6526 100644
--- a/mail-client/evolution/evolution-3.38.4.ebuild
+++ b/mail-client/evolution/evolution-3.38.4.ebuild
@@ -95,6 +95,8 @@ file from /usr/share/applications if you use a different 
browser)."
 src_prepare() {
        cmake_src_prepare
        gnome2_src_prepare
+
+       eapply 
"${FILESDIR}"/3.38-PrintableOptions.cmake-Correct-variable-name-compari.patch
 }
 
 src_configure() {

diff --git 
a/mail-client/evolution/files/3.38-PrintableOptions.cmake-Correct-variable-name-compari.patch
 
b/mail-client/evolution/files/3.38-PrintableOptions.cmake-Correct-variable-name-compari.patch
new file mode 100644
index 00000000000..f7e8855bbe0
--- /dev/null
+++ 
b/mail-client/evolution/files/3.38-PrintableOptions.cmake-Correct-variable-name-compari.patch
@@ -0,0 +1,75 @@
+From 7cfe4190e3e72b40472d57871459f1b136393003 Mon Sep 17 00:00:00 2001
+From: Milan Crha <mc...@redhat.com>
+Date: Wed, 14 Apr 2021 16:58:08 +0200
+Subject: [PATCH] PrintableOptions.cmake: Correct variable name comparison
+
+CMake 3.20.1 errors out with:
+
+CMake Error at cmake/modules/PrintableOptions.cmake:38 (message):
+   variable name cannot be empty
+ Call Stack (most recent call first):
+   CMakeLists.txt:152 (add_printable_variable)
+
+Change how the parameter value is compared, to fix it.
+---
+ cmake/modules/PrintableOptions.cmake | 20 ++++++++++----------
+ 1 file changed, 10 insertions(+), 10 deletions(-)
+
+diff --git a/cmake/modules/PrintableOptions.cmake 
b/cmake/modules/PrintableOptions.cmake
+index ba1c9d0b7f..339f1da4b4 100644
+--- a/cmake/modules/PrintableOptions.cmake
++++ b/cmake/modules/PrintableOptions.cmake
+@@ -19,40 +19,40 @@
+ #    prints all the build options previously added with the above functions
+ 
+ macro(add_printable_variable_bare _name)
+-      if(_name STREQUAL "")
++      if("${_name}" STREQUAL "")
+               message(FATAL_ERROR "variable name cannot be empty")
+-      endif(_name STREQUAL "")
++      endif("${_name}" STREQUAL "")
+       list(APPEND _printable_options ${_name})
+ endmacro()
+ 
+ macro(add_printable_option _name _description _default_value)
+-      if(_name STREQUAL "")
++      if("${_name}" STREQUAL "")
+               message(FATAL_ERROR "option name cannot be empty")
+-      endif(_name STREQUAL "")
++      endif("${_name}" STREQUAL "")
+       option(${_name} ${_description} ${_default_value})
+       add_printable_variable_bare(${_name})
+ endmacro()
+ 
+ macro(add_printable_variable _name _description _default_value)
+-      if(_name STREQUAL "")
++      if("${_name}" STREQUAL "")
+               message(FATAL_ERROR "variable name cannot be empty")
+-      endif(_name STREQUAL "")
++      endif("${_name}" STREQUAL "")
+       set(${_name} ${_default_value} CACHE STRING ${_description})
+       add_printable_variable_bare(${_name})
+ endmacro()
+ 
+ macro(add_printable_variable_path _name _description _default_value)
+-      if(_name STREQUAL "")
++      if("${_name}" STREQUAL "")
+               message(FATAL_ERROR "path variable name cannot be empty")
+-      endif(_name STREQUAL "")
++      endif("${_name}" STREQUAL "")
+       set(${_name} ${_default_value} CACHE PATH ${_description})
+       add_printable_variable_bare(${_name})
+ endmacro()
+ 
+ macro(add_printable_variable_filepath _name _description _default_value)
+-      if(_name STREQUAL "")
++      if("${_name}" STREQUAL "")
+               message(FATAL_ERROR "filepath variable name cannot be empty")
+-      endif(_name STREQUAL "")
++      endif("${_name}" STREQUAL "")
+       set(${_name} ${_default_value} CACHE FILEPATH ${_description})
+       add_printable_variable_bare(${_name})
+ endmacro()
+-- 
+2.26.3
+

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