AC_INIT([librtlsdr],

m4_esyscmd([./git-version-gen .tarball-version]),

[osmocom-sdr@lists.osmocom.org])

AM_INIT_AUTOMAKE([dist-bzip2])

dnl kernel style compile messages

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

dnl checks for programs

AC_PROG_MAKE_SET

AC_PROG_CC

AC_PROG_INSTALL

AM_PROG_CC_C_O

LT_INIT

AC_PROG_LIBTOOL

PKG_CHECK_MODULES(LIBUSB, libusb-1.0 >= 1.0)

LIBS="$LIBS $LIBUSB_LIBS"

CFLAGS="$CFLAGS $LIBUSB_CFLAGS"

AC_PATH_PROG(DOXYGEN,doxygen,false)

AM_CONDITIONAL(HAVE_DOXYGEN, test $DOXYGEN != false)

AC_CONFIG_MACRO_DIR([m4])

dnl checks for header files

AC_HEADER_STDC

AC_CHECK_HEADERS(sys/types.h)

AC_CHECK_HEADERS(pthread.h,, [AC_MSG_ERROR([pthread.h required])])

# pc variables

AC_SUBST(RTLSDR_PC_LIBS,["$LIBS"])

AC_SUBST(RTLSDR_PC_CFLAGS,["$CFLAGS"])

dnl checks for required libraries

dnl pthreads

AC_CHECK_LIB(pthread, pthread_create, [LIBS="$LIBS -lpthread"])

dnl libmath (for rtl_fm)

AC_CHECK_LIB(m, atan2, [LIBS="$LIBS -lm"])

dnl libmath (for rtl_adsb)

AC_CHECK_LIB(m, sqrt, [LIBS="$LIBS -lm"])

dnl libmath (for rtl_power)

AC_CHECK_LIB(m, atan2, [LIBS="$LIBS -lm"])

dnl librealtime (for rtl_test, rtl_fm)

AC_CHECK_LIB(rt, clock_gettime, [LIBS="$LIBS -lrt"])

# The following test is taken from WebKit's webkit.m4

saved_CFLAGS="$CFLAGS"

CFLAGS="$CFLAGS -fvisibility=hidden "

AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])

AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],

[ AC_MSG_RESULT([yes])

SYMBOL_VISIBILITY="-fvisibility=hidden"],

AC_MSG_RESULT([no]))

CFLAGS="$saved_CFLAGS"

AC_SUBST(SYMBOL_VISIBILITY)

AC_MSG_CHECKING(whether compiler understands -Wall)

old_CFLAGS="$CFLAGS"

CFLAGS="$CFLAGS -Wall -Wextra -Wno-unused-parameter -Wno-unused -Wsign-compare -Wdeclaration-after-statement"

AC_TRY_COMPILE([],[],

AC_MSG_RESULT(yes),

AC_MSG_RESULT(no)

CFLAGS="$old_CFLAGS")

AC_ARG_ENABLE(driver-detach,

[ --enable-driver-detach Enable detaching of kernel driver (disabled by default)],

[if test x$enableval = xyes; then

CFLAGS="$CFLAGS -DDETACH_KERNEL_DRIVER"

fi])

dnl Generate the output

AC_CONFIG_HEADER(config.h)

AC_OUTPUT(

librtlsdr.pc

include/Makefile

src/Makefile

Makefile

Doxyfile

)