Revert "Remove libbsd dependency for Linux"

CMakeLists.txt

@@ -200,6 +200,15 @@ check_function_exists(strlcpy HAVE_STRLCPY)
 check_function_exists(sysconf HAVE_SYSCONF)
 check_function_exists(arc4random HAVE_ARC4RANDOM)
 
+if(NOT HAVE_STRLCPY AND NOT HAVE_GETPROGNAME)
+  include(FindPkgConfig)
+  pkg_check_modules(BSD_OVERLAY libbsd-overlay)
+  if(BSD_OVERLAY_FOUND)
+    set(HAVE_STRLCPY 1 CACHE INTERNAL "Have function strlcpy" FORCE)
+    set(HAVE_GETPROGNAME 1 CACHE INTERNAL "Have function getprogname" FORCE)
+  endif()
+endif()
+
 find_package(Threads REQUIRED)
 
 check_include_files("TargetConditionals.h" HAVE_TARGETCONDITIONALS_H)

src/CMakeLists.txt

@@ -205,6 +205,11 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL Android)
                          PRIVATE
                            -U_GNU_SOURCE)
 endif()
+if(BSD_OVERLAY_FOUND)
+  target_compile_options(dispatch
+                         PRIVATE
+                           ${BSD_OVERLAY_CFLAGS})
+endif()
 if("${CMAKE_C_SIMULATE_ID}" STREQUAL "MSVC")
   target_compile_options(dispatch
                          PRIVATE
@@ -226,6 +231,9 @@ else()
                            -fblocks
                            -momit-leaf-frame-pointer)
 endif()
+if(BSD_OVERLAY_FOUND)
+  target_link_libraries(dispatch PRIVATE ${BSD_OVERLAY_LDFLAGS})
+endif()
 if(LibRT_FOUND)
   target_link_libraries(dispatch PRIVATE RT::rt)
 endif()

src/internal.h

@@ -274,10 +274,8 @@ upcast(dispatch_object_t dou)
 #include <linux/sysctl.h>
 #else
 #include <sys/sysctl.h>
-#endif /* __ANDROID__ */
-#if !defined(__linux__)
 #include <sys/queue.h>
-#endif
+#endif /* __ANDROID__ */
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <sys/mman.h>

src/shims.h

@@ -33,7 +33,7 @@
 #include "shims/generic_win_stubs.h"
 #endif // defined(_WIN32)
 
-#if defined(_WIN32) || defined(__linux__)
+#if defined(_WIN32) || defined(__ANDROID__)
 #include "shims/generic_sys_queue.h"
 #endif
 

tests/CMakeLists.txt

@@ -31,6 +31,11 @@ target_include_directories(bsdtests
                            PUBLIC
                              # bsdtests.h needs config_ac.h
                              ${PROJECT_BINARY_DIR})
+if(BSD_OVERLAY_FOUND)
+  target_compile_options(bsdtests
+                         PRIVATE
+                           ${BSD_OVERLAY_CFLAGS})
+endif()
 if (WIN32)
   target_sources(bsdtests
                  PRIVATE
@@ -53,13 +58,23 @@ target_include_directories(bsdtestharness
                              ${CMAKE_CURRENT_BINARY_DIR}
                              ${CMAKE_CURRENT_SOURCE_DIR}
                              ${PROJECT_SOURCE_DIR})
+if(BSD_OVERLAY_FOUND)
+  target_compile_options(bsdtestharness
+                         PRIVATE
+                           ${BSD_OVERLAY_CFLAGS})
+endif()
 target_link_libraries(bsdtestharness
                       PRIVATE
                         bsdtests
                         dispatch)
+if(BSD_OVERLAY_FOUND)
+  target_link_libraries(bsdtestharness
+                        PRIVATE
+                          ${BSD_OVERLAY_LDFLAGS})
+endif()
 
 function(add_unit_test name)
-  set(options DISABLED_TEST)
+  set(options DISABLED_TEST;NO_BSD_OVERLAY)
   set(single_value_args)
   set(multiple_value_args SOURCES)
   cmake_parse_arguments(AUT "${options}" "${single_value_args}" "${multiple_value_args}" ${ARGN})
@@ -82,6 +97,11 @@ function(add_unit_test name)
   target_include_directories(${name}
                              SYSTEM BEFORE PRIVATE
                                "${BlocksRuntime_INCLUDE_DIR}")
+  if(BSD_OVERLAY_FOUND AND NOT AUT_NO_BSD_OVERLAY)
+    target_compile_options(${name}
+                           PRIVATE
+                             ${BSD_OVERLAY_CFLAGS})
+  endif()
   if("${CMAKE_C_SIMULATE_ID}" STREQUAL "MSVC")
     target_compile_options(${name} PRIVATE -Xclang -fblocks)
     target_compile_options(${name} PRIVATE /W3 -Wno-deprecated-declarations)
@@ -95,6 +115,11 @@ function(add_unit_test name)
                           dispatch
                           Threads::Threads
                           BlocksRuntime::BlocksRuntime)
+  if(BSD_OVERLAY_FOUND AND NOT AUT_NO_BSD_OVERLAY)
+    target_link_libraries(${name}
+                          PRIVATE
+                            ${BSD_OVERLAY_LDFLAGS})
+  endif()
   target_link_libraries(${name} PRIVATE bsdtests)
   add_test(NAME ${name}
            COMMAND bsdtestharness $<TARGET_FILE:${name}>)
@@ -174,7 +199,7 @@ endforeach()
 set_tests_properties(dispatch_io_pipe_close PROPERTIES TIMEOUT 5)
 
 # test dispatch API for various C/CXX language variants
-add_unit_test(dispatch_c99 SOURCES dispatch_c99.c)
+add_unit_test(dispatch_c99 NO_BSD_OVERLAY SOURCES dispatch_c99.c)
 add_unit_test(dispatch_plusplus SOURCES dispatch_plusplus.cpp)
 
 # test-specific link options