From: Eric Haszlakiewicz <erh+git@nimenees.com>
Date: Mon, 27 Jun 2022 02:15:24 +0000 (+0000)
Subject: Fix issue #775 - use a loop instead of list(TRANSFORM ...) to support cmake < 3.12.
X-Git-Tag: json-c-0.17-20230812~44
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d28ac67dde77566f53a97f22b4ea7cb36afe6582;p=thirdparty%2Fjson-c.git

Fix issue #775 - use a loop instead of list(TRANSFORM ...) to support cmake < 3.12.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 89cff3f7..eb53cefc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -531,7 +531,17 @@ if (UNIX OR MINGW OR CYGWIN)
 	# Linking against the static json-c requires
 	# dependent packages to include additional libs:
 	SET(LIBS_LIST ${CMAKE_REQUIRED_LIBRARIES})
-	list(TRANSFORM LIBS_LIST PREPEND "-l")
+
+	# Note: We would need cmake >= 3.12 in order to use list(TRANSFORM ...)
+	function(list_transform_prepend var prefix)
+		set(temp "")
+		foreach(f ${${var}})
+			list(APPEND temp "${prefix}${f}")
+		endforeach()
+		set(${var} "${temp}" PARENT_SCOPE)
+	endfunction()
+	list_transform_prepend(LIBS_LIST "-l")
+
 	string(REPLACE ";" " " LIBS "${LIBS_LIST}")
 
     configure_file(json-c.pc.in json-c.pc @ONLY)