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dnl Detection and configuration of the visibility feature of gcc
dnl Vincent Torri 2006-02-11
dnl
dnl GCC_CHECK_VISIBILITY([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Check the visibility feature of gcc
dnl
AC_DEFUN([GCC_CHECK_VISIBILITY],
[AC_MSG_CHECKING([whether ${CC} supports symbol visibility])
save_CFLAGS=${CFLAGS}
CFLAGS="$CFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[
#pragma GCC visibility push(hidden)
extern void f(int);
#pragma GCC visibility pop
]],
[[]]
)],
[AC_DEFINE(
GCC_HAS_VISIBILITY,
[],
[Defined if GCC supports the visibility feature])
m4_if([$1], [], [:], [$1])
AC_MSG_RESULT(yes)],
[m4_if([$2], [], [:], [$2])
AC_MSG_RESULT(no)])
CFLAGS=${save_CFLAGS}
])
dnl Configure script for doxygen
dnl Vincent Torri 2006-05-11
dnl
dnl AM_CHECK_DOXYGEN([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl Test for the doxygen program, and define BUILD_DOCS and DOXYGEN.
dnl
AC_DEFUN([AM_CHECK_DOXYGEN],
[
DOXYGEN="doxygen"
dnl
dnl Disable the build of the documentation
dnl
AC_ARG_ENABLE(
[build_docs],
AC_HELP_STRING(
[--disable-build-docs],
[Disable the build of the documentation]),
[if test x"$enableval" != x"yes" ; then
enable_build_docs="no"
else
enable_build_docs="yes"
fi],
[enable_build_docs="yes"])
if test "$enable_build_docs" = "no" ; then
BUILD_DOCS=no
else
dnl
dnl Get the prefix where doxygen is installed.
dnl
AC_ARG_WITH(
[doxygen],
AC_HELP_STRING(
[--with-doxygen=FILE],
[doxygen program to use (eg /usr/bin/doxygen)]),
dnl
dnl Check the given doxygen program.
dnl
[DOXYGEN=${withval}
AC_CHECK_PROG(
[BUILD_DOCS],
[${DOXYGEN}],
[yes],
[no])
if test $BUILD_DOCS = no; then
echo "WARNING:"
echo "The doxygen program you specified:"
echo "$DOXYGEN"
echo "was not found. Please check the path and make sure "
echo "the program exists and is executable."
AC_MSG_WARN(
[Warning: no doxygen detected. Documentation will not be built])
fi],
[AC_CHECK_PROG(
[BUILD_DOCS],
[${DOXYGEN}],
[yes],
[no])
if test ${BUILD_DOCS} = no; then
echo "WARNING:"
echo "The doxygen program was not found in your execute"
echo "You may have doxygen installed somewhere not covered by your path."
echo ""
echo "If this is the case make sure you have the packages installed, AND"
echo "that the doxygen program is in your execute path (see your"
echo "shell's manual page on setting the \$PATH environment variable), OR"
echo "alternatively, specify the program to use with --with-doxygen."
AC_MSG_WARN(
[Warning: no doxygen detected. Documentation will not be built])
fi])
fi
AC_MSG_CHECKING([whether documentation is built])
AC_MSG_RESULT([${BUILD_DOCS}])
dnl
dnl Substitution
dnl
AC_SUBST([DOXYGEN])
AM_CONDITIONAL(BUILD_DOCS, test "x$BUILD_DOCS" = "xyes")
])
dnl End of acinclude.m4
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