## Copyright (c) 2009 Openismus GmbH ## Copyright (c) 2015 Daniel Elstner ## ## This file is part of the sigrok project. ## ## sigrok is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## sigrok is distributed in the hope that it will be useful, ## but WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with sigrok. If not, see . #serial 20150821 ## SR_APPEND(var-name, [list-sep,] element) ## ## Append the shell word to the shell variable named , ## prefixed by unless the list was empty before appending. If ## only two arguments are supplied, defaults to a single space ## character. ## AC_DEFUN([SR_APPEND], [dnl m4_assert([$# >= 2])[]dnl $1=[$]{$1[}]m4_if([$#], [2], [[$]{$1:+' '}$2], [[$]{$1:+$2}$3])[]dnl ]) ## _SR_PKG_VERSION_SET(var-prefix, pkg-name, tag-prefix, base-version, major, minor, [micro]) ## m4_define([_SR_PKG_VERSION_SET], [dnl m4_assert([$# >= 6])[]dnl $1=$4 sr_git_deps= # Check if we can get revision information from git. sr_head=`git -C "$srcdir" rev-parse --verify --short HEAD 2>&AS_MESSAGE_LOG_FD` AS_IF([test "$?" = 0 && test "x$sr_head" != x], [dnl test ! -f "$srcdir/.git/HEAD" \ || sr_git_deps="$sr_git_deps \$(top_srcdir)/.git/HEAD" sr_head_name=`git -C "$srcdir" rev-parse --symbolic-full-name HEAD 2>&AS_MESSAGE_LOG_FD` AS_IF([test "$?" = 0 && test -f "$srcdir/.git/$sr_head_name"], [sr_git_deps="$sr_git_deps \$(top_srcdir)/.git/$sr_head_name"]) # Append the revision hash unless we are exactly on a tagged release. git -C "$srcdir" describe --match "$3$4" \ --exact-match >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD \ || $1="[$]$1-git-$sr_head" ]) # Use $(wildcard) so that things do not break if for whatever # reason these files do not exist anymore at make time. AS_IF([test -n "$sr_git_deps"], [SR_APPEND([CONFIG_STATUS_DEPENDENCIES], ["\$(wildcard$sr_git_deps)"])]) AC_SUBST([CONFIG_STATUS_DEPENDENCIES])[]dnl AC_SUBST([$1])[]dnl dnl AC_DEFINE([$1_MAJOR], [$5], [Major version number of $2.])[]dnl AC_DEFINE([$1_MINOR], [$6], [Minor version number of $2.])[]dnl m4_ifval([$7], [AC_DEFINE([$1_MICRO], [$7], [Micro version number of $2.])])[]dnl AC_DEFINE_UNQUOTED([$1_STRING], ["[$]$1"], [Version of $2.])[]dnl ]) ## SR_PKG_VERSION_SET(var-prefix, version-triple) ## ## Set up substitution variables and macro definitions for the package ## version components. Derive the version suffix from the repository ## revision if possible. ## ## Substitutions: ## Macro defines: _{MAJOR,MINOR,MICRO,STRING} ## AC_DEFUN([SR_PKG_VERSION_SET], [dnl m4_assert([$# >= 2])[]dnl _SR_PKG_VERSION_SET([$1], m4_defn([AC_PACKAGE_NAME]), m4_defn([AC_PACKAGE_TARNAME])[-], m4_expand([$2]), m4_unquote(m4_split(m4_expand([$2]), [\.]))) ]) ## _SR_LIB_VERSION_SET(var-prefix, pkg-name, abi-triple, current, revision, age) ## m4_define([_SR_LIB_VERSION_SET], [dnl m4_assert([$# >= 6])[]dnl $1=$3 AC_SUBST([$1])[]dnl AC_DEFINE([$1_CURRENT], [$4], [Binary version of $2.])[]dnl AC_DEFINE([$1_REVISION], [$5], [Binary revision of $2.])[]dnl AC_DEFINE([$1_AGE], [$6], [Binary age of $2.])[]dnl AC_DEFINE([$1_STRING], ["$3"], [Binary version triple of $2.])[]dnl ]) ## SR_LIB_VERSION_SET(var-prefix, abi-triple) ## ## Set up substitution variables and macro definitions for a library ## binary version. ## ## Substitutions: ## Macro defines: _{CURRENT,REVISION,AGE,STRING} ## AC_DEFUN([SR_LIB_VERSION_SET], [dnl m4_assert([$# >= 1])[]dnl _SR_LIB_VERSION_SET([$1], m4_defn([AC_PACKAGE_NAME]), [$2], m4_unquote(m4_split([$2], [:]))) ]) ## _SR_ARG_ENABLE_WARNINGS_ONCE ## ## Implementation helper macro of SR_ARG_ENABLE_WARNINGS. Pulled in ## through AC_REQUIRE so that it is only expanded once. ## m4_define([_SR_ARG_ENABLE_WARNINGS_ONCE], [dnl AC_PROVIDE([$0])[]dnl AC_ARG_ENABLE([warnings], [AS_HELP_STRING([[--enable-warnings[=min|max|fatal|no]]], [set compile pedantry level [default=min]])], [sr_enable_warnings=$enableval], [sr_enable_warnings=min])[]dnl dnl # Test whether the compiler accepts each flag. Look at standard output, # since GCC only shows a warning message if an option is not supported. sr_check_compile_warning_flags() { for sr_flag do sr_cc_out=`$sr_cc $sr_warning_flags $sr_flag -c "$sr_conftest" 2>&1 || echo failed` AS_IF([test "$?$sr_cc_out" = 0], [SR_APPEND([sr_warning_flags], [$sr_flag])], [AS_ECHO(["$sr_cc: $sr_cc_out"]) >&AS_MESSAGE_LOG_FD]) rm -f "conftest.[$]{OBJEXT:-o}" done } ]) ## SR_ARG_ENABLE_WARNINGS(variable, min-flags, max-flags) ## ## Provide the --enable-warnings configure argument, set to "min" by default. ## and should be space-separated lists of compiler ## warning flags to use with --enable-warnings=min or --enable-warnings=max, ## respectively. Warning level "fatal" is the same as "max" but in addition ## enables -Werror mode. ## ## In order to determine the warning options to use with the C++ compiler, ## call AC_LANG([C++]) first to change the current language. If different ## output variables are used, it is also fine to call SR_ARG_ENABLE_WARNINGS ## repeatedly, once for each language setting. ## AC_DEFUN([SR_ARG_ENABLE_WARNINGS], [dnl m4_assert([$# >= 3])[]dnl AC_REQUIRE([_SR_ARG_ENABLE_WARNINGS_ONCE])[]dnl dnl AS_CASE([$ac_compile], [[*'$CXXFLAGS '*]], [sr_lang='C++' sr_cc=$CXX sr_conftest="conftest.[$]{ac_ext:-cc}"], [[*'$CFLAGS '*]], [sr_lang=C sr_cc=$CC sr_conftest="conftest.[$]{ac_ext:-c}"], [AC_MSG_ERROR([[current language is neither C nor C++]])]) dnl AC_MSG_CHECKING([which $sr_lang compiler warning flags to use]) sr_warning_flags= AC_LANG_CONFTEST([AC_LANG_SOURCE([[ int main(int argc, char** argv) { return (argv != 0) ? argc : 0; } ]])]) AS_CASE([$sr_enable_warnings], [no], [], [max], [sr_check_compile_warning_flags $3], [fatal], [sr_check_compile_warning_flags $3 -Werror], [sr_check_compile_warning_flags $2]) rm -f "$sr_conftest" AC_SUBST([$1], [$sr_warning_flags]) AC_MSG_RESULT([[$]{sr_warning_flags:-none}])[]dnl ])