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dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
dnl Several autoconf functions AC_REQUIRE AC_PROG_CPP/AC_PROG_CXXCPP
dnl or AC_HEADER_STDC, meaning they are called even when we don't call
dnl them explicitly.
dnl However, theses checks are not necessary and python configure sets
dnl the corresponding variables already, so just skip those tests
dnl entirely.
define([AC_PROG_CPP],[])
define([AC_PROG_CXXCPP],[])
define([AC_HEADER_STDC], [])
AC_DEFUN([MOZ_TOOL_VARIABLES],
[
GNU_AS=
GNU_LD=
GNU_CC=
GNU_CXX=
if test "$CC_TYPE" = "gcc"; then
GNU_CC=1
GNU_CXX=1
fi
if test "`echo | $AS -o conftest.out -v 2>&1 | grep -c GNU`" != "0"; then
GNU_AS=1
fi
rm -f conftest.out
if test "`echo | $LD -v 2>&1 | grep -c GNU`" != "0"; then
GNU_LD=1
fi
CLANG_CC=
CLANG_CXX=
CLANG_CL=
if test "$CC_TYPE" = "clang"; then
GNU_CC=1
GNU_CXX=1
CLANG_CC=1
CLANG_CXX=1
fi
if test "$CC_TYPE" = "clang-cl"; then
CLANG_CL=1
fi
if test "$GNU_CC"; then
if `$CC -print-prog-name=ld` -v 2>&1 | grep -c GNU >/dev/null; then
GCC_USE_GNU_LD=1
fi
fi
AC_SUBST(CLANG_CXX)
AC_SUBST(CLANG_CL)
])
AC_DEFUN([MOZ_CROSS_COMPILER],
[
echo "cross compiling from $host to $target"
if test -z "$HOST_AR_FLAGS"; then
HOST_AR_FLAGS="$AR_FLAGS"
fi
AC_CHECK_PROGS(HOST_RANLIB, $HOST_RANLIB ranlib, ranlib, :)
AC_CHECK_PROGS(HOST_AR, $HOST_AR ar, ar, :)
dnl AC_CHECK_PROGS manually goes through $PATH, and as such fails to handle
dnl absolute or relative paths. Relative paths wouldn't work anyways, but
dnl absolute paths would. Trick AC_CHECK_PROGS into working in that case by
dnl adding / to PATH. This is temporary until this moves to moz.configure
dnl (soon).
_SAVE_PATH=$PATH
case "${TOOLCHAIN_PREFIX}" in
/*)
PATH="/:$PATH"
;;
esac
AC_PROG_CC
AC_PROG_CXX
AC_CHECK_PROGS(RANLIB, "${TOOLCHAIN_PREFIX}ranlib", :)
AC_CHECK_PROGS(AR, "${TOOLCHAIN_PREFIX}ar", :)
AC_CHECK_PROGS(AS, "${TOOLCHAIN_PREFIX}as", :)
AC_CHECK_PROGS(LD, "${TOOLCHAIN_PREFIX}ld", :)
AC_CHECK_PROGS(LIPO, "${TOOLCHAIN_PREFIX}lipo", :)
AC_CHECK_PROGS(STRIP, "${TOOLCHAIN_PREFIX}strip", :)
AC_CHECK_PROGS(WINDRES, "${TOOLCHAIN_PREFIX}windres", :)
AC_CHECK_PROGS(OTOOL, "${TOOLCHAIN_PREFIX}otool", :)
AC_CHECK_PROGS(OBJCOPY, "${TOOLCHAIN_PREFIX}objcopy", :)
PATH=$_SAVE_PATH
])
AC_DEFUN([MOZ_CXX11],
[
dnl Updates to the test below should be duplicated further below for the
dnl cross-compiling case.
AC_LANG_CPLUSPLUS
if test "$GNU_CXX"; then
AC_CACHE_CHECK([whether 64-bits std::atomic requires -latomic],
ac_cv_needs_atomic,
AC_TRY_LINK(
[#include <cstdint>
#include <atomic>],
[ std::atomic<uint64_t> foo; foo = 1; ],
ac_cv_needs_atomic=no,
_SAVE_LIBS="$LIBS"
LIBS="$LIBS -latomic"
AC_TRY_LINK(
[#include <cstdint>
#include <atomic>],
[ std::atomic<uint64_t> foo; foo = 1; ],
ac_cv_needs_atomic=yes,
ac_cv_needs_atomic="do not know; assuming no")
LIBS="$_SAVE_LIBS"
)
)
if test "$ac_cv_needs_atomic" = yes; then
MOZ_NEEDS_LIBATOMIC=1
else
MOZ_NEEDS_LIBATOMIC=
fi
AC_SUBST(MOZ_NEEDS_LIBATOMIC)
fi
AC_LANG_C
])
|
