1 dnl -*- mode: autoconf -*-
6 dnl GTK_DOC_CHECK([minimum-gtk-doc-version])
7 AC_DEFUN([GTK_DOC_CHECK],
9 AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
10 AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
11 dnl for overriding the documentation installation directory
13 AC_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
14 [with_html_dir='${datadir}/gtk-doc/html'])
15 HTML_DIR="$with_html_dir"
18 dnl enable/disable documentation building
19 AC_ARG_ENABLE(gtk-doc,
20 AC_HELP_STRING([--enable-gtk-doc],
21 [use gtk-doc to build documentation [default=no]]),,
25 if test x$enable_gtk_doc = xyes; then
26 if test -z "$PKG_CONFIG"; then
27 AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
29 if test "$PKG_CONFIG" != "no" && $PKG_CONFIG --exists gtk-doc; then
33 dnl do we want to do a version check?
35 [gtk_doc_min_version=$1
36 if test "$have_gtk_doc" = yes; then
37 AC_MSG_CHECKING([gtk-doc version >= $gtk_doc_min_version])
38 if $PKG_CONFIG --atleast-version $gtk_doc_min_version gtk-doc; then
46 if test "$have_gtk_doc" != yes; then
51 AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes)
52 AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL")
55 # AX_C_FLOAT_WORDS_BIGENDIAN ([ACTION-IF-TRUE], [ACTION-IF-FALSE],
56 # [ACTION-IF-UNKNOWN])
58 # Checks the ordering of words within a multi-word float. This check
59 # is necessary because on some systems (e.g. certain ARM systems), the
60 # float word ordering can be different from the byte ordering. In a
61 # multi-word float context, "big-endian" implies that the word containing
62 # the sign bit is found in the memory location with the lowest address.
63 # This implemenation was inspired by the AC_C_BIGENDIAN macro in autoconf.
64 # -------------------------------------------------------------------------
65 AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN],
66 [AC_CACHE_CHECK(whether float word ordering is bigendian,
67 ax_cv_c_float_words_bigendian, [
69 # The endianess is detected by first compiling C code that contains a special
70 # double float value, then grepping the resulting object file for certain
71 # strings of ascii values. The double is specially crafted to have a
72 # binary representation that corresponds with a simple string. In this
73 # implementation, the string "noonsees" was selected because the individual
74 # word values ("noon" and "sees") are palindromes, thus making this test
75 # byte-order agnostic. If grep finds the string "noonsees" in the object
76 # file, the target platform stores float words in big-endian order. If grep
77 # finds "seesnoon", float words are in little-endian order. If neither value
78 # is found, the user is instructed to specify the ordering.
80 ax_cv_c_float_words_bigendian=unknown
81 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
83 double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
87 if strings - conftest.$ac_objext | grep noonsees >/dev/null ; then
88 ax_cv_c_float_words_bigendian=yes
90 if strings - conftest.$ac_objext | grep seesnoon >/dev/null ; then
91 if test "$ax_cv_c_float_words_bigendian" = unknown; then
92 ax_cv_c_float_words_bigendian=no
94 ax_cv_c_float_words_bigendian=unknown
100 case $ax_cv_c_float_words_bigendian in
103 [AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
104 [Define to 1 if your system stores words within floats
105 with the most significant word first])]) ;;
112 Unknown float word ordering. You need to manually preset
113 ax_cv_c_float_words_bigendian=no (or yes) according to your system.
118 ])# AX_C_FLOAT_WORDS_BIGENDIAN