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6d972f5183
There were still some dash-killing uses of +=. Fixed thusly. * config.m4: Replace V+="..." with V="$V..." * configure: Rebuilt.
283 lines
8.1 KiB
Plaintext
283 lines
8.1 KiB
Plaintext
# Nathan's Common Config -*- mode:autoconf -*-
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# Copyright (C) 2020 Nathan Sidwell, nathan@acm.org
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# License: Apache v2.0
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# Note: VAR+=... is not dashing, despite its looks
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AC_DEFUN([NMS_NOT_IN_SOURCE],
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[if test -e configure ; then
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AC_MSG_ERROR([Do not build in the source tree. Reasons])
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fi])
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# thanks to Zack Weinberg for fixing this!
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AC_DEFUN([NMS_TOOLS],
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[AC_SUBST([tools], [])
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AC_ARG_WITH([tools],
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AS_HELP_STRING([--with-tools=DIR],[tool directory]),
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[AS_CASE([$withval],
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[yes], [AC_MSG_ERROR([--with-tools requires an argument])],
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[no], [:],
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[tools="${withval%/bin}"])])
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if test -n "$tools" ; then
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if test -d "$tools/bin"; then
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PATH="$tools/bin:$PATH"
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AC_MSG_NOTICE([Using tools in $tools])
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else
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AC_MSG_ERROR([tool location does not exist])
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fi
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fi])
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AC_DEFUN([NMS_TOOL_DIRS],
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[if test "$tools" && test -d "$tools/include" ; then
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CXX="$CXX -I$tools/include"
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fi
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if test "$tools" && test -d "$tools/lib" ; then
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toollib="$tools/lib"
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if os=$(CXX -print-multi-os-directory 2>/dev/null) ; then
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toollib="$toollib/${os}"
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fi
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LDFLAGS="$LDFLAGS -L $toollib"
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unset toollib
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fi])
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AC_DEFUN([NMS_NUM_CPUS],
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[AC_MSG_CHECKING([number of CPUs])
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AS_CASE([$build],
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[*-*-darwin*], [NUM_CPUS=$(sysctl -n hw.ncpu 2>/dev/null)],
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[NUM_CPUS=$(grep -c '^processor' /proc/cpuinfo 2>/dev/null)])
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test "$NUM_CPUS" = 0 && NUM_CPUS=
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AC_MSG_RESULT([${NUM_CPUS:-unknown}])
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test "$NUM_CPUS" = 1 && NUM_CPUS=
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AC_SUBST(NUM_CPUS)])
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AC_DEFUN([NMS_MAINTAINER_MODE],
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[AC_ARG_ENABLE([maintainer-mode],
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AS_HELP_STRING([--enable-maintainer-mode],
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[enable maintainer mode. Add rules to rebuild configurey bits]),,
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[enable_maintainer_mode=no])
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AS_CASE([$enable_maintainer_mode],
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[yes], [maintainer_mode=yes],
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[no], [maintainer=no],
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[AC_MSG_ERROR([unknown maintainer mode $enable_maintainer_mode])])
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AC_MSG_CHECKING([maintainer-mode])
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AC_MSG_RESULT([$maintainer_mode])
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test "$maintainer_mode" = yes && MAINTAINER=yes
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AC_SUBST(MAINTAINER)])
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AC_DEFUN([NMS_CXX_COMPILER],
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[AC_ARG_WITH([compiler],
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AS_HELP_STRING([--with-compiler=NAME],[which compiler to use]),
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AC_MSG_CHECKING([C++ compiler])
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if test "$withval" = "yes" ; then
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AC_MSG_ERROR([NAME not specified])
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elif test "$withval" = "no" ; then
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AC_MSG_ERROR([Gonna need a C++ compiler!])
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else
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CXX="${withval}"
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AC_MSG_RESULT([$CXX])
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fi)])
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AC_DEFUN([NMS_CXX_11],
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[AC_MSG_CHECKING([whether $CXX is for C++11])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#if __cplusplus != 201103
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#error "C++11 is required"
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#endif
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]])],
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[AC_MSG_RESULT([yes])],
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[CXX_ORIG="$CXX"
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CXX="$CXX -std=c++11"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#if __cplusplus != 201103
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#error "C++11 is required"
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#endif
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]])],
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AC_MSG_RESULT([adding -std=c++11]),
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[CXX="$CXX_ORIG"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#if __cplusplus > 201103
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#error "C++11 is required"
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#endif
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]])],
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AC_MSG_RESULT([> C++11]),
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([C++11 is required])]))
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unset CXX_ORIG])])
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AC_DEFUN([NMS_CXX_20],
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[AC_MSG_CHECKING([whether $CXX is for C++20])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#if __cplusplus <= 201703
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#error "C++20 is required"
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#endif
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]])],
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[AC_MSG_RESULT([yes])],
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[CXX="$CXX -std=c++20"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#if __cplusplus <= 201703
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#error "C++20 is required"
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#endif
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]])],
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AC_MSG_RESULT([adding -std=c++20]),
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AC_MSG_RESULT([no])
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AC_MSG_ERROR([C++20 is required])]))
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AC_MSG_CHECKING([whether C++20 support is sufficiently advanced])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <version>
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// There doesn't seem to be a feature macro for __VA_OPT__ :(
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#define VARIADIC(X,...) X __VA_OPT__((__VA_ARGS__))
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#define X(Y,Z) 1
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int ary[VARIADIC(X,Y,Z)];
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#if __cpp_constinit < 201907
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#error "C++20 constinit required"
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cpp_constinit is __cpp_constinit
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#endif
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#if __cpp_if_constexpr < 201606
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#error "C++20 constexpr required"
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cpp_constexpr is __cpp_if_constexpr
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#endif
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#if __cpp_concepts < 201907
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#error "C++20 concepts required"
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cpp_concepts is __cpp_concepts
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#endif
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#if __cpp_structured_bindings < 201606
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#error "C++20 structured bindings required"
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cpp_structured_bindings is __cpp_structured_bindings
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#endif
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#if __cpp_lib_int_pow2 < 202002
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#error "std::has_single_bit required"
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cpp_lib_int_pow2 is __cpp_lib_int_pow2
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#endif
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]])],
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AC_MSG_RESULT([yes 🙂]),
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AC_MSG_RESULT([no 🙁])
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AC_MSG_ERROR([C++20 support is too immature]))])
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AC_DEFUN([NMS_ENABLE_EXCEPTIONS],
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[AC_ARG_ENABLE([exceptions],
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AS_HELP_STRING([--enable-exceptions],
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[enable exceptions & rtti]),,
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[enable_exceptions="no"])
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AS_CASE([$enable_exceptions],
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[yes], [nms_exceptions=yes],
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[no], [nms_exceptions=no],
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[AC_MSG_ERROR([unknown exceptions $enable_exceptions])])
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AC_MSG_CHECKING([exceptions])
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AC_MSG_RESULT([$nms_exceptions])
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if test "$nms_exceptions" != no ; then
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EXCEPTIONS=yes
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fi
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AC_SUBST(EXCEPTIONS)])
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AC_DEFUN([NMS_LINK_OPT],
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[AC_MSG_CHECKING([adding $1 to linker])
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ORIG_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS $1"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
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[AC_MSG_RESULT([ok])],
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[LDFLAGS="$ORIG_LDFLAGS"
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AC_MSG_RESULT([no])])
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unset ORIG_LDFLAGS])
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AC_DEFUN([NMS_BUGURL],
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[AC_MSG_CHECKING([bugurl])
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AC_ARG_WITH(bugurl,
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AS_HELP_STRING([--with-bugurl=URL],[where to report bugs]),
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AS_CASE(["$withval"],
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[yes], [AC_MSG_ERROR([--with-bugurl requires an argument])],
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[no], [BUGURL=""],
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[BUGURL="${withval}"]),
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[BUGURL="${PACKAGE_BUGREPORT}"])
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AC_MSG_RESULT($BUGURL)
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AC_DEFINE_UNQUOTED(BUGURL,"$BUGURL",[Bug reporting location])])
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AC_DEFUN([NMS_DISTRIBUTION],
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[AC_ARG_ENABLE([distribution],
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AS_HELP_STRING([--enable-distribution],
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[enable distribution. Inhibit components that prevent distribution]),,
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[enable_distribution="no"])
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AS_CASE([$enable_distribution],
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[yes], [nms_distribution=yes],
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[no], [nms_distribution=no],
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[AC_MSG_ERROR([unknown distribution $enable_distribution])])
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AC_MSG_CHECKING([distribution])
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AC_MSG_RESULT([$nms_distribution])])
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AC_DEFUN([NMS_ENABLE_CHECKING],
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[AC_ARG_ENABLE([checking],
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AS_HELP_STRING([--enable-checking],
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[enable run-time checking]),,
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[enable_checking="yes"])
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AS_CASE([$enable_checking],
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[yes|all|yes,*], [nms_checking=yes],
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[no|none|release], [nms_checking=],
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[AC_MSG_ERROR([unknown check "$enable_checking"])])
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AC_MSG_CHECKING([checking])
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AC_MSG_RESULT([${nms_checking:-no}])
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if test "$nms_checking" = yes ; then
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AC_DEFINE_UNQUOTED([NMS_CHECKING], [0${nms_checking:+1}], [Enable checking])
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fi])
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AC_DEFUN([NMS_WITH_BINUTILS],
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[AC_MSG_CHECKING([binutils])
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AC_ARG_WITH(bfd,
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AS_HELP_STRING([--with-bfd=DIR], [location of libbfd]),
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if test "$withval" = "yes" ; then
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AC_MSG_ERROR([DIR not specified])
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elif test "$withval" = "no" ; then
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AC_MSG_RESULT(installed)
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else
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AC_MSG_RESULT(${withval})
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CPPFLAGS="$CPPFLAGS -I${withval}/include"
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LDFLAGS="$LDFLAGS -L${withval}/lib"
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fi,
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AC_MSG_RESULT(installed))])
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AC_DEFUN([NMS_ENABLE_BACKTRACE],
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[AC_REQUIRE([NMS_DISTRIBUTION])
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AC_ARG_ENABLE([backtrace],
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AS_HELP_STRING([--enable-backtrace],[provide backtrace on fatality.]),,
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[enable_backtrace="maybe"])
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if test "${enable_backtrace:-maybe}" != no ; then
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AC_CHECK_HEADERS(execinfo.h)
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AC_CHECK_FUNCS(backtrace)
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if test "$nms_distribution" = no ; then
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AC_DEFINE([HAVE_DECL_BASENAME], [1], [Needed for demangle.h])
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# libiberty prevents distribution because of licensing
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AC_CHECK_HEADERS([demangle.h libiberty/demangle.h],[break])
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# libbfd prevents distribution because of licensing
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AC_CHECK_HEADERS([bfd.h])
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AC_SEARCH_LIBS([bfd_openr],[bfd],[LIBS="$LIBS -lz -liberty -ldl"],,[-lz -liberty -ldl])
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fi
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if test "$ac_cv_func_backtrace" = yes ; then
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nms_backtrace=yes
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ldbacktrace=-rdynamic
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AC_DEFINE([NMS_BACKTRACE], [1], [Enable backtrace])
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elif test "$enable_backtrace" = yes ; then
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AC_MSG_ERROR([Backtrace unavailable])
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fi
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AC_SUBST([ldbacktrace])
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fi
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AC_MSG_CHECKING([backtrace])
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AC_MSG_RESULT([${nms_backtrace:-no}])])
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AC_DEFUN([NMS_CONFIG_FILES],
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[CONFIG_FILES="Makefile $1"
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SUBDIRS="$2"
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for generated in config.h.in configure ; do
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if test $srcdir/configure.ac -nt $srcdir/$generated ; then
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touch $srcdir/$generated
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fi
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done
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for dir in . $SUBDIRS
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do
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CONFIG_FILES="$CONFIG_FILES $dir/Makesub"
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test -f ${srcdir}/$dir/tests/Makesub.in && CONFIG_FILES="$CONFIG_FILES $dir/tests/Makesub"
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done
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AC_CONFIG_FILES([$CONFIG_FILES])
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AC_SUBST(configure_args,[$ac_configure_args])
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AC_SUBST(SUBDIRS)
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AC_SUBST(CONFIG_FILES)])
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