forked from Imagelibrary/binutils-gdb
a979f2a07a
Only one arch uses this currently, but others could too. By moving it up to the common checks, it'll also let us simplify the moxie code significantly.
79 lines
2.4 KiB
Plaintext
79 lines
2.4 KiB
Plaintext
dnl Copyright (C) 1997-2021 Free Software Foundation, Inc.
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dnl
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dnl This program is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
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dnl
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dnl Setup the toolchain variables.
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AC_DEFUN([SIM_AC_TOOLCHAIN],
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[dnl
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AC_CANONICAL_SYSTEM
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AC_USE_SYSTEM_EXTENSIONS
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AC_REQUIRE([AC_PROG_CC])
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AC_REQUIRE([AC_PROG_CPP])
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AC_C_BIGENDIAN
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AC_ARG_PROGRAM
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AC_PROG_INSTALL
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AC_CHECK_TOOL(DTC, dtc)
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dnl Setup toolchain settings for build-time tools..
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if test "x$cross_compiling" = "xno"; then
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: "${AR_FOR_BUILD:=\$(AR)}"
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: "${CC_FOR_BUILD:=\$(CC)}"
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: "${RANLIB_FOR_BUILD:=\$(RANLIB)}"
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: "${CFLAGS_FOR_BUILD:=\$(CFLAGS)}"
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: "${LDFLAGS_FOR_BUILD:=\$(LDFLAGS)}"
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else
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: "${AR_FOR_BUILD:=ar}"
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: "${CC_FOR_BUILD:=gcc}"
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: "${RANLIB_FOR_BUILD:=ranlib}"
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: "${CFLAGS_FOR_BUILD:=-g -O}"
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: "${LDLFAGS_FOR_BUILD:=}"
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fi
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AC_SUBST(AR_FOR_BUILD)
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AC_SUBST(CC_FOR_BUILD)
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AC_SUBST(RANLIB_FOR_BUILD)
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AC_SUBST(CFLAGS_FOR_BUILD)
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AC_SUBST(LDFLAGS_FOR_BUILD)
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AC_SUBST(CFLAGS)
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AC_CHECK_TOOL(AR, ar)
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AC_PROG_RANLIB
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# Require C11 or newer. Autoconf-2.70 provides ac_cv_prog_cc_c11 when using
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# AC_PROG_CC, but we're still using Autoconf-2.69, and the newest it understands
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# is C99. So handle it ourselves.
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m4_version_prereq([2.70], [AC_MSG_ERROR([clean this up!])], [:])
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C_DIALECT=
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AC_MSG_CHECKING([whether C11 is supported by default])
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
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# error "C11 support not found"
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#endif
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])], [AC_MSG_RESULT([yes])], [
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AC_MSG_RESULT([no])
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AC_MSG_CHECKING([for -std=c11 support])
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ac_save_CC="$CC"
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CC="$CC -std=c11"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
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# error "C11 support not found"
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#endif
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])], [
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AC_MSG_RESULT([yes])
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CC="$ac_save_CC"
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C_DIALECT="-std=c11"
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], [AC_MSG_ERROR([C11 is required])])])
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AC_SUBST(C_DIALECT)
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])
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