[PATCH] cmake: determine list of extra built-ins dynamically

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From: Johannes Schindelin <johannes.schindelin@xxxxxx>

In 0a21d0e08902 (Makefile: mark git-maintenance as a builtin,
2020-12-01), we marked git-maintenance as a builtin in the Makefile, but
forgot to do the same in `CMakeLists.txt`.

Rather than always play catch-up and adjust `git_builtin_extra`
manually, use the `BUILT_INS` definitions in the Makefile as
authoritative source and generate `git_builtin_extra` dynamically.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
    ci: fix the vs-build job after adding git maintenance
    
    Together with https://github.com/gitgitgadget/git/pull/805, this should
    fix the vs-build job in the CI build of seen.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-807%2Fdscho%2Fcmake-and-extra-builtins-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-807/dscho/cmake-and-extra-builtins-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/807

 contrib/buildsystems/CMakeLists.txt | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index df539a44fa..c151dd7257 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -114,6 +114,16 @@ macro(parse_makefile_for_scripts list_var regex lang)
 	endif()
 endmacro()
 
+macro(parse_makefile_for_executables list_var regex)
+	file(STRINGS ${CMAKE_SOURCE_DIR}/Makefile ${list_var} REGEX "^${regex} \\+= git-(.*)")
+	string(REPLACE "${regex} +=" "" ${list_var} ${${list_var}})
+	string(STRIP ${${list_var}} ${list_var}) #remove trailing/leading whitespaces
+	string(REPLACE "git-" "" ${list_var} ${${list_var}}) #strip `git-` prefix
+	string(REPLACE "\$X" ";" ${list_var} ${${list_var}}) #strip $X, ; is for converting the string into a list
+	list(TRANSFORM ${list_var} STRIP) #remove trailing/leading whitespaces for each element in list
+	list(REMOVE_ITEM ${list_var} "") #remove empty list elements
+endmacro()
+
 include(CheckTypeSize)
 include(CheckCSourceRuns)
 include(CheckCSourceCompiles)
@@ -673,10 +683,7 @@ if(CURL_FOUND)
 	endif()
 endif()
 
-set(git_builtin_extra
-	cherry cherry-pick format-patch fsck-objects
-	init merge-subtree restore show
-	stage status switch whatchanged)
+parse_makefile_for_executables(git_builtin_extra "BUILT_INS")
 
 #Creating hardlinks
 foreach(s ${git_SOURCES} ${git_builtin_extra})

base-commit: 898f80736c75878acc02dc55672317fcc0e0a5a6
-- 
gitgitgadget



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