[acquire/CMakeLists.txt] Use libbsd provided strnstr if available ; [ cmake/FindLibBSD.cmake] Add search for libbsd

Author: SamuelMarks

acquire/CMakeLists.txt

@@ -251,6 +251,13 @@ else ()
 #            "${CMAKE_BINARY_DIR}/generated_checksums.c")
 
     add_library("${LIBRARY_NAME}_lib" SHARED "${gen_header_files}" "${gen_source_files}")
+
+    find_package(LibBSD)
+    if (LibBSD_FOUND)
+        target_link_directories("${LIBRARY_NAME}_lib" PUBLIC "${BSD_LIBRARY}")
+        target_compile_definitions("${LIBRARY_NAME}_lib" PUBLIC HAVE_STRNSTR=1)
+    endif (LibBSD_FOUND)
+
     message(STATUS "${LIBRARY_NAME}_lib::CMAKE_SOURCE_DIR = ${CMAKE_SOURCE_DIR}")
     target_include_directories(
             "${LIBRARY_NAME}_lib"

cmake/FindLibBSD.cmake

@@ -0,0 +1,33 @@
+# Find Bsd compat lib
+#
+# Once done, this will define:
+#
+#  Bsd_FOUND - system has Bsd compat
+#  Bsd_INCLUDE_DIRS - the Bsd compat include directories
+#  Bsd_LIBRARIES - link these to use Bsd compat
+#
+
+include(FindPkgConfig)
+
+if (BSD_INCLUDE_DIR AND BSD_LIBRARY)
+    # Already in cache, be silent
+    set(BSD_FIND_QUIETLY TRUE)
+endif ()
+
+pkg_check_modules(BSD_PKGCONF libbsd)
+
+find_path(BSD_INCLUDE_DIR bsd.h
+        PATH_SUFFIX bsd
+        PATHS ${BSD_PKGCONF_INCLUDE_DIRS}
+)
+
+find_library(BSD_LIBRARY
+        NAMES bsd
+        PATHS ${BSD_PKGCONF_LIBRARY_DIRS}
+)
+
+set(BSD_PROCESS_INCLUDES BSD_INCLUDE_DIR)
+set(BSD_PROCESS_LIBS BSD_LIBRARY)
+if (BSD_LIBRARY)
+    set(LibBSD_FOUND 1)
+endif (BSD_LIBRARY)