Switch to autotools instead of cmake

cmake is big and so are its dependencies.  Also it's not the build
system advertized by upstream.  Help + ok sthen@, LGTM kirby@ (maintainer)

devel/jansson/Makefile

@@ -1,11 +1,11 @@
-# $OpenBSD: Makefile,v 1.15 2020/10/30 17:17:00 juanfra Exp $
+# $OpenBSD: Makefile,v 1.16 2021/07/11 22:52:40 jca Exp $
 
 COMMENT =		library for manipulating JSON data
 
 DISTNAME =		jansson-2.12
-REVISION =		0
+REVISION =		1
 
-SHARED_LIBS =		jansson 3.2
+SHARED_LIBS =		jansson 4.0
 
 CATEGORIES =		devel
 
@@ -18,10 +18,6 @@ PERMIT_PACKAGE =	Yes
 
 MASTER_SITES =		https://digip.org/jansson/releases/
 
-MODULES =		devel/cmake
-
-CONFIGURE_ARGS +=	-DJANSSON_BUILD_SHARED_LIBS=ON \
-			-DJANSSON_BUILD_DOCS=OFF \
-			-DJANSSON_EXAMPLES=OFF
+CONFIGURE_STYLE =	gnu
 
 .include <bsd.port.mk>

devel/jansson/patches/patch-CMakeLists_txt

@@ -1,42 +0,0 @@
-$OpenBSD: patch-CMakeLists_txt,v 1.6 2018/12/12 15:09:14 sthen Exp $
-
-Index: CMakeLists.txt
---- CMakeLists.txt.orig
-+++ CMakeLists.txt
-@@ -358,19 +358,19 @@ if(JANSSON_BUILD_SHARED_LIBS)
-       ${JANSSON_HDR_PRIVATE}
-       ${JANSSON_HDR_PUBLIC}
-       src/jansson.def)
--
-    set_target_properties(jansson PROPERTIES
-       VERSION ${JANSSON_VERSION}
-       SOVERSION ${JANSSON_SOVERSION})
--else()
--   add_library(jansson STATIC
--      ${JANSSON_SRC}
--      ${JANSSON_HDR_PRIVATE}
--      ${JANSSON_HDR_PUBLIC})
--   set_target_properties(jansson PROPERTIES
--      POSITION_INDEPENDENT_CODE true)
- endif()
- 
-+add_library(janssonstatic STATIC
-+   ${JANSSON_SRC}
-+   ${JANSSON_HDR_PRIVATE}
-+   ${JANSSON_HDR_PUBLIC})
-+set_target_properties(janssonstatic PROPERTIES
-+   OUTPUT_NAME jansson
-+   POSITION_INDEPENDENT_CODE true)
-+
- if (JANSSON_EXAMPLES)
- 	add_executable(simple_parse "${CMAKE_CURRENT_SOURCE_DIR}/examples/simple_parse.c")
- 	target_link_libraries(simple_parse jansson)
-@@ -652,7 +652,7 @@ configure_package_config_file(
- #
- option(JANSSON_INSTALL "Generate installation target" ON)
- if (JANSSON_INSTALL)
--  install(TARGETS jansson
-+  install(TARGETS jansson janssonstatic
-           EXPORT janssonTargets
-           LIBRARY DESTINATION "lib"
-           ARCHIVE DESTINATION "lib"

devel/jansson/pkg/PLIST

@@ -1,12 +1,7 @@
-@comment $OpenBSD: PLIST,v 1.4 2018/12/12 15:09:14 sthen Exp $
+@comment $OpenBSD: PLIST,v 1.5 2021/07/11 22:52:40 jca Exp $
 include/jansson.h
 include/jansson_config.h
-lib/cmake/
-lib/cmake/jansson/
-lib/cmake/jansson/janssonConfig.cmake
-lib/cmake/jansson/janssonConfigVersion.cmake
-lib/cmake/jansson/janssonTargets${MODCMAKE_BUILD_SUFFIX}
-lib/cmake/jansson/janssonTargets.cmake
-lib/libjansson.a
+@static-lib lib/libjansson.a
+lib/libjansson.la
 @lib lib/libjansson.so.${LIBjansson_VERSION}
 lib/pkgconfig/jansson.pc