configure.ac

   1 AC_INIT([libusb], [1.0.2])
   2 AM_INIT_AUTOMAKE
   3 AC_CONFIG_SRCDIR([libusb/core.c])
   4 AC_CONFIG_MACRO_DIR([m4])
   5 AM_CONFIG_HEADER([config.h])
   6
   7 AC_PREREQ([2.50])
   8 AC_PROG_CC
   9 AC_PROG_LIBTOOL
  10 AC_C_INLINE
  11 AM_PROG_CC_C_O
  12 AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
  13
  14 AC_MSG_CHECKING([operating system])
  15 case $host in
  16 *-linux*)
  17         AC_DEFINE(OS_LINUX, [], [Linux backend])
  18         AC_SUBST(OS_LINUX)
  19         AC_MSG_RESULT([Linux])
  20         backend="linux"
  21         AC_CHECK_LIB(rt, clock_gettime)
  22         AM_LDFLAGS=""
  23         ;;
  24 *-darwin*)
  25         AC_DEFINE(OS_DARWIN, [], [Darwin backend])
  26         AC_SUBST(OS_DARWIN)
  27         AC_MSG_RESULT([Darwin/MacOS X])
  28         backend="darwin"
  29         AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
  30         ;;
  31 *)
  32         AC_MSG_ERROR([unsupported operating system])
  33 esac
  34
  35 AM_CONDITIONAL([OS_LINUX], [test "x$backend" == "xlinux"])
  36 AM_CONDITIONAL([OS_DARWIN], [test "x$backend" == "xdarwin"])
  37
  38 # Library versioning
  39 lt_major="0"
  40 lt_revision="0"
  41 lt_age="0"
  42 AC_SUBST(lt_major)
  43 AC_SUBST(lt_revision)
  44 AC_SUBST(lt_age)
  45
  46 # Message logging
  47 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
  48         [log_enabled=$enableval],
  49         [log_enabled='yes'])
  50 if test "x$log_enabled" != "xno"; then
  51         AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
  52 fi
  53
  54 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
  55         [enable debug logging (default n)])],
  56         [debug_log_enabled=$enableval],
  57         [debug_log_enabled='no'])
  58 if test "x$debug_log_enabled" != "xno"; then
  59         AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
  60 fi
  61
  62 # Examples build
  63 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
  64         [build example applications (default n)])],
  65         [build_examples=$enableval],
  66         [build_examples='no'])
  67 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
  68
  69 # Restore gnu89 inline semantics on gcc 4.3 and newer
  70 saved_cflags="$CFLAGS"
  71 CFLAGS="$CFLAGS -fgnu89-inline"
  72 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
  73 CFLAGS="$saved_cflags"
  74
  75 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
  76 saved_cflags="$CFLAGS"
  77 CFLAGS="$CFLAGS -fvisibility=hidden"
  78 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
  79         [VISIBILITY_CFLAGS="-fvisibility=hidden"
  80          AC_DEFINE([API_EXPORTED], [__attribute__((visibility("default")))], [Default visibility]) ],
  81         [ VISIBILITY_CFLAGS=""
  82          AC_DEFINE([API_EXPORTED], [], [Default visibility]) ],
  83         ])
  84 CFLAGS="$saved_cflags"
  85
  86 # check for -Wno-pointer-sign compiler support (GCC >= 4)
  87 saved_cflags="$CFLAGS"
  88 CFLAGS="$CFLAGS -Wno-pointer-sign"
  89 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
  90         nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
  91 CFLAGS="$saved_cflags"
  92
  93 AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
  94
  95 AC_SUBST(VISIBILITY_CFLAGS)
  96 AC_SUBST(AM_CFLAGS)
  97 AC_SUBST(AM_LDFLAGS)
  98
  99 AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])
 100 AC_OUTPUT
 101