OpenWrt compatible build system.

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

CMakeLists.txt

@@ -8,6 +8,7 @@ option(ENABLE_SANITIZER_THREAD "Enable TSAN (does not work together with ASAN)."
 option(ENABLE_MEMORY_PROFILING "Enable dynamic memory tracking." OFF)
 option(BUILD_EXAMPLES "Build C examples." ON)
 option(BUILD_NDPI "Clone and build nDPI from github." OFF)
+option(NDPI_NO_PKGCONFIG "Do not use pkgconfig to search for libnDPI." OFF)
 
 set(STATIC_LIBNDPI_INSTALLDIR "" CACHE STRING "Path to a installation directory of libnDPI e.g. /opt/libnDPI/usr")
 
@@ -43,7 +44,7 @@ if(ENABLE_SANITIZER_THREAD)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=undefined -fsanitize=enum -fsanitize=thread")
 endif()
 
-if(BUILD_NDPI)
+if(STATIC_LIBNDPI_INSTALLDIR STREQUAL "" AND BUILD_NDPI)
     include(ExternalProject)
     ExternalProject_Add(
         libnDPI
@@ -60,7 +61,7 @@ if(BUILD_NDPI)
     add_dependencies(nDPId-test libnDPI)
 endif()
 
-if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "" OR BUILD_NDPI)
+if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "" OR BUILD_NDPI OR NDPI_NO_PKGCONFIG)
     option(NDPI_WITH_GCRYPT "Link static libndpi library against libgcrypt." ON)
     option(NDPI_WITH_PCRE "Link static libndpi library against libpcre." OFF)
     option(NDPI_WITH_MAXMINDDB "Link static libndpi library against libmaxminddb." OFF)
@@ -72,16 +73,28 @@ if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "" OR BUILD_NDPI)
     if(NDPI_WITH_PCRE)
         pkg_check_modules(PCRE REQUIRED libpcre>=8.39)
     endif()
+
     if(NDPI_WITH_MAXMINDDB)
         pkg_check_modules(MAXMINDDB REQUIRED libmaxminddb)
     endif()
+endif()
 
+if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "" OR BUILD_NDPI)
     set(STATIC_LIBNDPI_INC "${STATIC_LIBNDPI_INSTALLDIR}/include/ndpi")
     set(STATIC_LIBNDPI_LIB "${STATIC_LIBNDPI_INSTALLDIR}/lib/libndpi.a")
 else()
-    pkg_check_modules(NDPI REQUIRED libndpi>=3.5.0)
-    set(STATIC_LIBNDPI_INC "")
-    set(STATIC_LIBNDPI_LIB "")
+    if(NOT NDPI_NO_PKGCONFIG)
+        pkg_check_modules(NDPI REQUIRED libndpi>=3.5.0)
+
+        set(STATIC_LIBNDPI_INC "")
+        set(STATIC_LIBNDPI_LIB "")
+    else()
+        set(LIBNDPI_INC "" CACHE STRING "/usr/include/ndpi")
+        set(LIBNDPI_LIB "" CACHE STRING "/usr/lib/libndpi.a")
+
+        set(STATIC_LIBNDPI_INC "${LIBNDPI_INC}")
+        set(STATIC_LIBNDPI_LIB "${LIBNDPI_LIB}")
+    endif()
 endif()
 
 find_package(PCAP "1.8.1" REQUIRED)
@@ -152,15 +165,21 @@ endif()
 message(STATUS "ENABLE_SANITIZER.........: ${ENABLE_SANITIZER}")
 message(STATUS "ENABLE_SANITIZER_THREAD..: ${ENABLE_SANITIZER_THREAD}")
 message(STATUS "ENABLE_MEMORY_PROFILING..: ${ENABLE_MEMORY_PROFILING}")
-if(NOT BUILD_NDPI)
+if(NOT BUILD_NDPI AND NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "")
 message(STATUS "STATIC_LIBNDPI_INSTALLDIR: ${STATIC_LIBNDPI_INSTALLDIR}")
-if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "")
-message(STATUS "`- STATIC_LIBNDPI_INC....: ${STATIC_LIBNDPI_INC}")
-message(STATUS "`- STATIC_LIBNDPI_LIB....: ${STATIC_LIBNDPI_LIB}")
-message(STATUS "`- NDPI_WITH_GCRYPT......: ${NDPI_WITH_GCRYPT}")
-message(STATUS "`- NDPI_WITH_PCRE........: ${NDPI_WITH_PCRE}")
-message(STATUS "`- NDPI_WITH_MAXMINDDB...: ${NDPI_WITH_MAXMINDDB}")
-endif()
 endif()
 message(STATUS "BUILD_NDPI...............: ${BUILD_NDPI}")
+message(STATUS "NDPI_NO_PKGCONFIG........: ${NDPI_NO_PKGCONFIG}")
+if(NDPI_NO_PKGCONFIG)
+message(STATUS "LIBNDPI_INC..............: ${LIBNDPI_INC}")
+message(STATUS "LIBNDPI_LIB..............: ${LIBNDPI_LIB}")
+endif()
+if(NOT STATIC_LIBNDPI_INSTALLDIR STREQUAL "" OR BUILD_NDPI OR NDPI_NO_PKGCONFIG)
+message(STATUS "--------------------------")
+message(STATUS "- STATIC_LIBNDPI_INC....: ${STATIC_LIBNDPI_INC}")
+message(STATUS "- STATIC_LIBNDPI_LIB....: ${STATIC_LIBNDPI_LIB}")
+message(STATUS "- NDPI_WITH_GCRYPT......: ${NDPI_WITH_GCRYPT}")
+message(STATUS "- NDPI_WITH_PCRE........: ${NDPI_WITH_PCRE}")
+message(STATUS "- NDPI_WITH_MAXMINDDB...: ${NDPI_WITH_MAXMINDDB}")
+endif()
 message(STATUS "--------------------------")