mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2024-09-20 05:42:36 +02:00
995a195f4d
Use with caution, the result highly depends on the accuracy of the clocksource your machine uses. On some machines it may be quite accurate, on others completely off. Signed-off-by: Steve Markgraf <steve@steve-m.de>
74 lines
1.7 KiB
Plaintext
74 lines
1.7 KiB
Plaintext
AC_INIT([librtlsdr],
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m4_esyscmd([./git-version-gen .tarball-version]),
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[osmocom-sdr@lists.osmocom.org])
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AM_INIT_AUTOMAKE([dist-bzip2])
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dnl kernel style compile messages
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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dnl checks for programs
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AC_PROG_MAKE_SET
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AC_PROG_CC
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AC_PROG_INSTALL
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LT_INIT
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AC_PROG_LIBTOOL
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PKG_CHECK_MODULES(LIBUSB, libusb-1.0 >= 1.0)
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LIBS="$LIBS $LIBUSB_LIBS"
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CFLAGS="$CFLAGS $LIBUSB_CFLAGS"
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AC_PATH_PROG(DOXYGEN,doxygen,false)
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AM_CONDITIONAL(HAVE_DOXYGEN, test $DOXYGEN != false)
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AC_CONFIG_MACRO_DIR([m4])
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dnl checks for header files
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AC_HEADER_STDC
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AC_CHECK_HEADERS(sys/types.h)
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AC_CHECK_HEADERS(pthread.h,, [AC_MSG_ERROR([pthread.h required])])
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# pc variables
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AC_SUBST(RTLSDR_PC_LIBS,["$LIBS"])
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AC_SUBST(RTLSDR_PC_CFLAGS,["$CFLAGS"])
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dnl checks for required libraries
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dnl pthreads
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AC_CHECK_LIB(pthread, pthread_create, [LIBS="$LIBS -lpthread"])
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dnl libmath (for rtl_fm)
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AC_CHECK_LIB(m, atan2, [LIBS="$LIBS -lm"])
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dnl librealtime (for rtl_test)
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AC_CHECK_LIB(rt, clock_gettime, [LIBS="$LIBS"])
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# The following test is taken from WebKit's webkit.m4
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -fvisibility=hidden "
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AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
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[ AC_MSG_RESULT([yes])
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SYMBOL_VISIBILITY="-fvisibility=hidden"],
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AC_MSG_RESULT([no]))
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CFLAGS="$saved_CFLAGS"
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AC_SUBST(SYMBOL_VISIBILITY)
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AC_MSG_CHECKING(whether compiler understands -Wall)
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old_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Wall -Wextra -Wno-unused -Wsign-compare"
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AC_TRY_COMPILE([],[],
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AC_MSG_RESULT(yes),
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AC_MSG_RESULT(no)
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CFLAGS="$old_CFLAGS")
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dnl Generate the output
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AM_CONFIG_HEADER(config.h)
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AC_OUTPUT(
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librtlsdr.pc
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include/Makefile
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src/Makefile
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Makefile
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Doxyfile
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)
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