Add hidraw backend for FreeBSD

FreeBSD support hidraw in Kernel from 13.0.
By using libusb only, we can only see the HID device from usb.
To address this, we implement hidraw backend for FreeBSD.

Just like Linux use libudev to handle usb specified HID stuff (like
Manufacture), we use libusb to handle it.

Sponsored-by: FreeBSD Foundation
Sponsored-by: Framework Laptop. Inc

Author: aokblast

CMakeLists.txt

@@ -42,6 +42,10 @@ elseif(NOT WIN32)
         option(HIDAPI_WITH_HIDRAW "Build HIDRAW-based implementation of HIDAPI" ON)
         option(HIDAPI_WITH_LIBUSB "Build LIBUSB-based implementation of HIDAPI" ON)
     endif()
+    if(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
+        option(HIDAPI_WITH_HIDRAW "Build HIDRAW-based implementation of HIDAPI" ON)
+        option(HIDAPI_WITH_LIBUSB "Build LIBUSB-based implementation of HIDAPI" ON)
+    endif()
     if(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
         option(HIDAPI_WITH_NETBSD "Build NetBSD/UHID implementation of HIDAPI" ON)
     endif()

Makefile.am

@@ -10,8 +10,12 @@ endif
 if OS_LINUX
 pkgconfig_DATA=pc/hidapi-hidraw.pc pc/hidapi-libusb.pc
 else
+if OS_FREEBSD
+pkgconfig_DATA=pc/hidapi-hidraw.pc pc/hidapi-libusb.pc
+else
 pkgconfig_DATA=pc/hidapi.pc
 endif
+endif
 
 SUBDIRS=
 
@@ -24,7 +28,7 @@ SUBDIRS += mac
 endif
 
 if OS_FREEBSD
-SUBDIRS += libusb
+SUBDIRS += freebsd libusb
 endif
 
 if OS_KFREEBSD
@@ -70,6 +74,7 @@ SCMCLEAN_TARGETS= \
  libusb/Makefile.in \
  Makefile.in \
  linux/Makefile.in \
+ freebsd/Makefile.in \
  windows/Makefile.in \
  m4/libtool.m4 \
  m4/lt~obsolete.m4 \

configure.ac

@@ -80,14 +80,18 @@ case $host in
 	AC_MSG_RESULT([ (FreeBSD back-end)])
 	AC_DEFINE(OS_FREEBSD, 1, [FreeBSD implementation])
 	AC_SUBST(OS_FREEBSD)
-	backend="libusb"
+	backend="freebsd"
 	os="freebsd"
 	threads="pthreads"
 
 	CFLAGS="$CFLAGS -I/usr/local/include"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
 	LIBS="${LIBS}"
 	PKG_CHECK_MODULES([libusb], [libusb-1.0 >= 1.0.9], true, [hidapi_lib_error libusb-1.0])
+	# HIDAPI/hidraw libs
+	LIBS_HIDRAW_PR="${LIBS_HIDRAW_PR} $libusb_LIBS"
+	CFLAGS_HIDRAW="${CFLAGS_HIDRAW} $libusb_CFLAGS"
+	# HIDAPI/libusb libs
 	LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} $libusb_LIBS"
 	CFLAGS_LIBUSB="${CFLAGS_LIBUSB} $libusb_CFLAGS"
 	AC_CHECK_LIB([iconv], [iconv_open], [LIBS_LIBUSB_PRIVATE="${LIBS_LIBUSB_PRIVATE} -liconv"], [hidapi_lib_error libiconv])
@@ -237,7 +241,7 @@ AM_CONDITIONAL(OS_WINDOWS, test "x$os" = xwindows)
 
 AC_CONFIG_HEADERS([config.h])
 
-if test "x$os" = "xlinux"; then
+if test "x$os" = xlinux; then
 	AC_CONFIG_FILES([pc/hidapi-hidraw.pc])
 	AC_CONFIG_FILES([pc/hidapi-libusb.pc])
 else
@@ -250,6 +254,7 @@ AC_CONFIG_FILES([Makefile \
 	hidtest/Makefile \
 	libusb/Makefile \
 	linux/Makefile \
+	freebsd/Makefile \
 	mac/Makefile \
 	testgui/Makefile \
 	windows/Makefile])

freebsd/.gitignore

@@ -0,0 +1,18 @@
+Debug
+Release
+*.exp
+*.ilk
+*.lib
+*.suo
+*.vcproj.*
+*.ncb
+*.suo
+*.dll
+*.pdb
+*.o
+*.so
+hidtest-hidraw
+.deps
+.libs
+*.lo
+*.la

freebsd/CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.6.3...3.25 FATAL_ERROR)
+
+add_library(hidapi_hidraw
+    ${HIDAPI_PUBLIC_HEADERS}
+    hid.c
+)
+target_link_libraries(hidapi_hidraw PUBLIC hidapi_include)
+
+find_package(Threads REQUIRED)
+
+include(FindPkgConfig)
+pkg_check_modules(libusb-1.0 REQUIRED IMPORTED_TARGET libusb-1.0>=1.0.9)
+
+target_link_libraries(hidapi_hidraw PRIVATE PkgConfig::libusb-1.0 Threads::Threads)
+
+set_target_properties(hidapi_hidraw
+    PROPERTIES
+        EXPORT_NAME "hidraw"
+        OUTPUT_NAME "hidapi-hidraw"
+        VERSION ${PROJECT_VERSION}
+        SOVERSION ${PROJECT_VERSION_MAJOR}
+        PUBLIC_HEADER "${HIDAPI_PUBLIC_HEADERS}"
+)
+
+# compatibility with find_package()
+add_library(hidapi::hidraw ALIAS hidapi_hidraw)
+# compatibility with raw library link
+add_library(hidapi-hidraw ALIAS hidapi_hidraw)
+
+if(HIDAPI_INSTALL_TARGETS)
+    install(TARGETS hidapi_hidraw EXPORT hidapi
+        LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+        ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+        PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/hidapi"
+    )
+endif()
+
+hidapi_configure_pc("${PROJECT_ROOT}/pc/hidapi-hidraw.pc.in")

freebsd/Makefile-manual

@@ -0,0 +1,42 @@
+###########################################
+# Simple Makefile for HIDAPI test program
+#
+# Alan Ott
+# Signal 11 Software
+# 2010-06-01
+###########################################
+
+all: hidtest-hidraw libs
+
+libs: libhidapi-hidraw.so
+
+CC       ?= gcc
+CFLAGS   ?= -Wall -g -fpic
+
+LDFLAGS  ?= -Wall -g
+
+
+COBJS     = hid.o ../hidtest/test.o
+OBJS      = $(COBJS)
+LIBS_USB  = `pkg-config libusb-1.0 --libs`
+LIBS      = $(LIBS_USB)
+INCLUDES ?= -I../hidapi `pkg-config libusb-1.0 --cflags`
+
+
+# Console Test Program
+hidtest-hidraw: $(COBJS)
+	$(CC) $(LDFLAGS) $^ $(LIBS_USB) -o $@
+
+# Shared Libs
+libhidapi-hidraw.so: $(COBJS)
+	$(CC) $(LDFLAGS) $(LIBS_USB) -shared -fpic -Wl,-soname,[email protected] $^ -o $@
+
+# Objects
+$(COBJS): %.o: %.c
+	$(CC) $(CFLAGS) -c $(INCLUDES) $< -o $@
+
+
+clean:
+	rm -f $(OBJS) hidtest-hidraw libhidapi-hidraw.so $(COBJS)
+
+.PHONY: clean libs

freebsd/Makefile.am

@@ -0,0 +1,10 @@
+lib_LTLIBRARIES = libhidapi-hidraw.la
+libhidapi_hidraw_la_SOURCES = hid.c
+libhidapi_hidraw_la_LDFLAGS = $(LTLDFLAGS)
+AM_CPPFLAGS = -I$(top_srcdir)/hidapi/ $(CFLAGS_HIDRAW)
+libhidapi_hidraw_la_LIBADD = $(LIBS_HIDRAW)
+
+hdrdir = $(includedir)/hidapi
+hdr_HEADERS = $(top_srcdir)/hidapi/hidapi.h
+
+EXTRA_DIST = Makefile-manual