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dnl -*- mode: autoconf -*-
# serial 1
dnl Usage:
dnl GTK_DOC_CHECK([minimum-gtk-doc-version])
AC_DEFUN([GTK_DOC_CHECK],
[
AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
dnl for overriding the documentation installation directory
AC_ARG_WITH(html-dir,
AC_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
[with_html_dir='${datadir}/gtk-doc/html'])
HTML_DIR="$with_html_dir"
AC_SUBST(HTML_DIR)
dnl enable/disable documentation building
AC_ARG_ENABLE(gtk-doc,
AC_HELP_STRING([--enable-gtk-doc],
[use gtk-doc to build documentation [default=no]]),,
enable_gtk_doc=no)
have_gtk_doc=no
if test x$enable_gtk_doc = xyes; then
if test -z "$PKG_CONFIG"; then
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
fi
if test "$PKG_CONFIG" != "no" && $PKG_CONFIG --exists gtk-doc; then
have_gtk_doc=yes
fi
dnl do we want to do a version check?
ifelse([$1],[],,
[gtk_doc_min_version=$1
if test "$have_gtk_doc" = yes; then
AC_MSG_CHECKING([gtk-doc version >= $gtk_doc_min_version])
if $PKG_CONFIG --atleast-version $gtk_doc_min_version gtk-doc; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
have_gtk_doc=no
fi
fi
])
if test "$have_gtk_doc" != yes; then
enable_gtk_doc=no
fi
fi
AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes)
AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL")
])
# AX_C_FLOAT_WORDS_BIGENDIAN ([ACTION-IF-TRUE], [ACTION-IF-FALSE],
# [ACTION-IF-UNKNOWN])
#
# Checks the ordering of words within a multi-word float. This check
# is necessary because on some systems (e.g. certain ARM systems), the
# float word ordering can be different from the byte ordering. In a
# multi-word float context, "big-endian" implies that the word containing
# the sign bit is found in the memory location with the lowest address.
# This implemenation was inspired by the AC_C_BIGENDIAN macro in autoconf.
# -------------------------------------------------------------------------
AC_DEFUN([AX_C_FLOAT_WORDS_BIGENDIAN],
[AC_CACHE_CHECK(whether float word ordering is bigendian,
ax_cv_c_float_words_bigendian, [
# The endianess is detected by first compiling C code that contains a special
# double float value, then grepping the resulting object file for certain
# strings of ascii values. The double is specially crafted to have a
# binary representation that corresponds with a simple string. In this
# implementation, the string "noonsees" was selected because the individual
# word values ("noon" and "sees") are palindromes, thus making this test
# byte-order agnostic. If grep finds the string "noonsees" in the object
# file, the target platform stores float words in big-endian order. If grep
# finds "seesnoon", float words are in little-endian order. If neither value
# is found, the user is instructed to specify the ordering.
ax_cv_c_float_words_bigendian=unknown
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
double d = 90904234967036810337470478905505011476211692735615632014797120844053488865816695273723469097858056257517020191247487429516932130503560650002327564517570778480236724525140520121371739201496540132640109977779420565776568942592.0;
]])], [
if strings - conftest.$ac_objext | grep noonsees >/dev/null ; then
ax_cv_c_float_words_bigendian=yes
fi
if strings - conftest.$ac_objext | grep seesnoon >/dev/null ; then
if test "$ax_cv_c_float_words_bigendian" = unknown; then
ax_cv_c_float_words_bigendian=no
else
ax_cv_c_float_words_bigendian=unknown
fi
fi
])])
case $ax_cv_c_float_words_bigendian in
yes)
m4_default([$1],
[AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
[Define to 1 if your system stores words within floats
with the most significant word first])]) ;;
no)
$2 ;;
*)
m4_default([$3],
[AC_MSG_ERROR([
Unknown float word ordering. You need to manually preset
ax_cv_c_float_words_bigendian=no (or yes) according to your system.
])]) ;;
esac
])# AX_C_FLOAT_WORDS_BIGENDIAN
dnl ==========================================================================
dnl
dnl Cairo-specific macros
dnl
m4_pattern_forbid([CAIRO])
m4_pattern_forbid([^cr_])
dnl ==========================================================================
dnl Usage:
dnl CAIRO_BIGENDIAN
dnl
AC_DEFUN([CAIRO_BIGENDIAN], [
case $host_os in
darwin*)
AH_VERBATIM([X_BYTE_ORDER],
[
/* Deal with multiple architecture compiles on Mac OS X */
#ifdef __APPLE_CC__
#ifdef __BIG_ENDIAN__
#define WORDS_BIGENDIAN 1
#define FLOAT_WORDS_BIGENDIAN 1
#else
#undef WORDS_BIGENDIAN
#undef FLOAT_WORDS_BIGENDIAN
#endif
#endif
])
;;
*)
AC_C_BIGENDIAN
AX_C_FLOAT_WORDS_BIGENDIAN
;;
esac
])
dnl CAIRO_CHECK_FUNCS_WITH_FLAGS(FUNCTION..., CFLAGS, LIBS
dnl [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Like AC_CHECK_FUNCS but with additional CFLAGS and LIBS
dnl --------------------------------------------------------------------
AC_DEFUN([CAIRO_CHECK_FUNCS_WITH_FLAGS],
[
_save_cflags="$CFLAGS"
_save_libs="$LIBS"
CFLAGS="$CFLAGS $2"
LIBS="$LIBS $3"
AC_CHECK_FUNCS($1, $4, $5)
CFLAGS="$_save_cflags"
LIBS="$_save_libs"
])
dnl CAIRO_CONFIG_COMMANDS is like AC_CONFIG_COMMANDS, except that:
dnl
dnl 1) It redirects the stdout of the command to the file.
dnl 2) It does not recreate the file if contents didn't change.
dnl
AC_DEFUN([CAIRO_CONFIG_COMMANDS],
[
AC_CONFIG_COMMANDS($1,
[
_config_file=$1
_tmp_file=cairoconf.tmp
AC_MSG_NOTICE([creating $_config_file])
{
$2
} >> "$_tmp_file" ||
AC_MSG_ERROR([failed to write to $_tmp_file])
if cmp -s "$_tmp_file" "$_config_file"; then
AC_MSG_NOTICE([$_config_file is unchanged])
rm -f "$_tmp_file"
else
mv "$_tmp_file" "$_config_file" ||
AC_MSG_ERROR([failed to update $_config_file])
fi
], $3)
])
dnl check compiler flags
AC_DEFUN([CAIRO_CC_TRY_FLAG],
[
AC_MSG_CHECKING([whether $CC supports $1])
_save_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Werror $1"
AC_COMPILE_IFELSE([ ], [cairo_cc_flag=yes], [cairo_cc_flag=no])
CFLAGS="$_save_cflags"
if test "x$cairo_cc_flag" = "xyes"; then
ifelse([$2], , :, [$2])
else
ifelse([$3], , :, [$3])
fi
AC_MSG_RESULT([$cairo_cc_flag])
])
dnl Usage:
dnl CAIRO_CHECK_NATIVE_ATOMIC_PRIMITIVES
AC_DEFUN([CAIRO_CHECK_NATIVE_ATOMIC_PRIMITIVES],
[
AC_CACHE_CHECK([for native atomic primitives], cairo_cv_atomic_primitives,
[
cairo_cv_atomic_primitives="none"
AC_TRY_LINK([int atomic_add(int i) { return __sync_fetch_and_add (&i, 1); }], [],
cairo_cv_atomic_primitives="Intel"
)
])
if test "x$cairo_cv_atomic_primitives" = xIntel; then
AC_DEFINE(HAVE_INTEL_ATOMIC_PRIMITIVES, 1,
[Enable if your compiler supports the Intel __sync_* atomic primitives])
fi
])
dnl Usage:
dnl CAIRO_CHECK_ATOMIC_OP_NEEDS_MEMORY_BARRIER
AC_DEFUN([CAIRO_CHECK_ATOMIC_OP_NEEDS_MEMORY_BARRIER],
[
AC_CACHE_CHECK([whether atomic ops require a memory barrier], cairo_cv_atomic_op_needs_memory_barrier,
[
case $host_cpu in
i?86) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
x86_64) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
arm*) cairo_cv_atomic_op_needs_memory_barrier="no" ;;
*) cairo_cv_atomic_op_needs_memory_barrier="yes" ;;
esac
])
if test "x$cairo_cv_atomic_op_needs_memory_barrier" = "xyes"; then
AC_DEFINE_UNQUOTED(ATOMIC_OP_NEEDS_MEMORY_BARRIER, 1,
[whether memory barriers are needed around atomic operations])
fi
])
dnl Parse Version.mk and declare m4 variables out of it
m4_define([CAIRO_PARSE_VERSION],
m4_translit(
m4_bpatsubst(m4_include(cairo-version.h),
[^.define \([a-zA-Z0-9_]*\) *\([0-9][0-9]*\)],
[[m4_define(\1, \[\2\])]]),
[A-Z], [a-z])
)
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