jsonnet: add help2man cross patch

Author: Duncaen

srcpkgs/jsonnet/patches/cross.patch

@@ -0,0 +1,20 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -380,7 +380,7 @@
+             add_custom_command(
+                 OUTPUT "${PROJECT_BINARY_DIR}/man/man1/jsonnet.1"
+                 COMMAND "${HELP2MAN_BINARY}"
+-                ARGS --section=1 --no-info --name="Jsonnet data templating language interpreter" --output="${PROJECT_BINARY_DIR}/man/man1/jsonnet.1" "$<TARGET_FILE:jsonnet>"
++                ARGS --section=1 --no-info --name="Jsonnet data templating language interpreter" --output="${PROJECT_BINARY_DIR}/man/man1/jsonnet.1" "${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:jsonnet>"
+                 DEPENDS jsonnet
+             )
+         endif()
+@@ -388,7 +388,7 @@
+             add_custom_command(
+                 OUTPUT "${PROJECT_BINARY_DIR}/man/man1/jsonnetfmt.1"
+                 COMMAND "${HELP2MAN_BINARY}"
+-                ARGS --section=1 --no-info --name="Jsonnet data templating language auto-formatter" --output="${PROJECT_BINARY_DIR}/man/man1/jsonnetfmt.1" "$<TARGET_FILE:jsonnetfmt>"
++                ARGS --section=1 --no-info --name="Jsonnet data templating language auto-formatter" --output="${PROJECT_BINARY_DIR}/man/man1/jsonnetfmt.1" "${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:jsonnetfmt>"
+                 DEPENDS jsonnetfmt
+             )
+         endif()