# DESCRIPTION: Process this file with autoconf to produce a configure script. # # Copyright 2003-2017 by Wilson Snyder. Verilator is free software; you can # redistribute it and/or modify it under the terms of either the GNU Lesser # General Public License Version 3 or the Perl Artistic License Version 2.0. #AC_INIT([Verilator],[#.### YYYY-MM-DD]) #AC_INIT([Verilator],[#.### devel]) AC_INIT([Verilator],[3.915 devel]) # When releasing, also update header of Changes file # and commit using "devel release" or "Version bump" message AC_CONFIG_HEADER(src/config_build.h) AC_CONFIG_FILES(Makefile src/Makefile src/Makefile_obj include/verilated.mk include/verilated_config.h verilator.pc) AC_MSG_RESULT([configuring for $PACKAGE_STRING]) # Special Substitutions - CFG_WITH_DEFENV AC_MSG_CHECKING(whether to use hardcoded paths) AC_ARG_ENABLE([defenv], [AS_HELP_STRING([--disable-defenv], [disable using some hardcoded data paths extracted from some default environment variables (the default is to use hardcoded paths)])], [case "${enableval}" in yes) CFG_WITH_DEFENV=yes ;; no) CFG_WITH_DEFENV=no ;; *) AC_MSG_ERROR([bad value ${enableval} for --disable-defenv]) ;; esac], CFG_WITH_DEFENV=yes) AC_SUBST(CFG_WITH_DEFENV) AC_MSG_RESULT($CFG_WITH_DEFENV) # Special Substitutions - CFG_WITH_CCWARN AC_MSG_CHECKING(whether to show and stop on compilation warnings) AC_ARG_ENABLE([ccwarn], [AS_HELP_STRING([--enable-ccwarn], [enable showing and stopping on compilation warnings])], [case "${enableval}" in yes) CFG_WITH_CCWARN=yes ;; no) CFG_WITH_CCWARN=no ;; *) AC_MSG_ERROR([bad value ${enableval} for --enable-ccwarn]) ;; esac], [case "x${VERILATOR_AUTHOR_SITE}" in x) CFG_WITH_CCWARN=no ;; *) CFG_WITH_CCWARN=yes ;; esac] ) AC_SUBST(CFG_WITH_CCWARN) AC_MSG_RESULT($CFG_WITH_CCWARN) # Special Substitutions - CFG_WITH_LONGTESTS AC_MSG_CHECKING(whether to run long tests) AC_ARG_ENABLE([longtests], [AS_HELP_STRING([--enable-longtests], [enable running long developer tests])], [case "${enableval}" in yes) CFG_WITH_LONGTESTS=yes ;; no) CFG_WITH_LONGTESTS=no ;; *) AC_MSG_ERROR([bad value ${enableval} for --enable-longtests]) ;; esac], [case "x${VERILATOR_AUTHOR_SITE}" in x) CFG_WITH_LONGTESTS=no ;; *) CFG_WITH_LONGTESTS=yes ;; esac] ) AC_SUBST(CFG_WITH_LONGTESTS) AC_MSG_RESULT($CFG_WITH_LONGTESTS) # Compiler flags CFLAGS=-I${includedir} CPPFLAGS=-I${includedir} CXXFLAGS=-I${includedir} LDFLAGS=-L${libdir} # Checks for programs. AC_PROG_CC AC_PROG_CXX AC_PROG_INSTALL AC_LANG_PUSH(C++) AC_MSG_CHECKING([that C++ compiler can compile simple program]) AC_RUN_IFELSE( [AC_LANG_SOURCE([int main() { return 0; }])], AC_MSG_RESULT(yes), AC_MSG_RESULT(no);AC_MSG_ERROR([a working C++ compiler is required]), AC_MSG_RESULT(yes)) AC_PATH_PROG(PERL,perl) if test "x$PERL" = "x" ; then AC_MSG_ERROR([Cannot find "perl" in your PATH, please install it]) fi AC_PATH_PROG(LEX,flex) if test "x$LEX" = "x" ; then AC_MSG_ERROR([Cannot find "flex" in your PATH, please install it]) fi AC_PATH_PROG(YACC,bison) if test "x$YACC" = "x" ; then AC_MSG_ERROR([Cannot find "bison" in your PATH, please install it]) fi # Checks for libraries. # Checks for typedefs, structures AC_CHECK_TYPE(size_t,unsigned int) AC_TYPE_SIZE_T # Checks for compiler characteristics. AC_C_INLINE AC_LINK_IFELSE( [AC_LANG_PROGRAM([#include ], [[int* a=new int; delete a; ]])], [], [AC_MSG_ERROR([$CXX does not seem to successfully compile a simple C++ program])]) AC_DEFUN([_MY_CXX_CHECK_FLAG], [# _MY_CXX_CHECK_FLAG(flag) -- Check if compiler supports specific options # Set $_my_result appropriately ACO_SAVE_CXXFLAGS="$CXXFLAGS" # -Werror needed otherwise unknown -Wno-div-by-zero won't report problems # new/delete is needed to find -faligned-new link problem on Darwin CXXFLAGS="$CXXFLAGS $1 -Werror" AC_MSG_CHECKING([whether $CXX accepts $1]) AC_LINK_IFELSE( [AC_LANG_PROGRAM([#include ], [[int* a=new int; delete a; ]])], [_my_result=yes if test -s conftest.err; then if grep -e "$1" conftest.err >/dev/null; then _my_result=no fi fi], [_my_result=no]) # GCC is annoying, trying to be helpful, it postpones unknown -Wno- # options if there's no error We want to see them regardless, so try # forcing an error and see if we get a gcc warning AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[an_error "intentional-error-for-test.h" ]],[])], [], # Ignore ok exit [if test -s conftest.err; then if grep -e "$1" conftest.err >/dev/null; then _my_result=no fi fi]) AC_MSG_RESULT($_my_result) CXXFLAGS="$ACO_SAVE_CXXFLAGS" ]) AC_DEFUN([_MY_CXX_CHECK_SET], [# _MY_CXX_CHECK_SET(variable,flag) -- Check if compiler supports specific options # If it does, set variable to flag, only if not previously set if test "$$1" = ""; then _MY_CXX_CHECK_FLAG($2) if test "$_my_result" = "yes" ; then $1="$2" fi fi ]) AC_DEFUN([_MY_CXX_CHECK_OPT], [# _MY_CXX_CHECK_OPT(flag) -- Check if compiler supports specific options # If it does, append flag to variable _MY_CXX_CHECK_FLAG($2) if test "$_my_result" = "yes" ; then $1="$$1 $2" fi ]) # Flag to select newest language standard supported # Macros work such that first option that passes is the one we take # gnu++14 is the newest that Verilator supports # std++03 is the oldest that Verilator supports _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++14) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++11) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++03) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++14) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++11) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++03) AC_SUBST(CFG_CXXFLAGS_STD_NEWEST) # And likewise oldest standard (same list above, backwards) # This is used for internal testing _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=std++03) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=std++11) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=std++14) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++03) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++11) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++14) _MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_OLDEST,-std=gnu++17) AC_SUBST(CFG_CXXFLAGS_STD_OLDEST) # Flags for compiling Verilator internals including parser, and Verilated files # These turn on extra warnings and are only used with 'configure --enable-ccwarn' _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wextra) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wfloat-conversion) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wlogical-op) AC_SUBST(CFG_CXXFLAGS_WEXTRA) # Flags for compiling Verilator internals including parser always _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Qunused-arguments) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-faligned-new) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-fno-delete-null-pointer-checks) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Wno-unused-parameter) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Wno-undefined-bool-conversion) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Wno-shadow) AC_SUBST(CFG_CXXFLAGS_SRC) # Flags for compiling Verilator parser always (in addition to above CFG_CXXFLAGS_SRC) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-char-subscripts) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-null-conversion) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-parentheses-equality) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-unused) AC_SUBST(CFG_CXXFLAGS_PARSER) # Flags for Verilated makefile # For example, -Wno-div-by-zero isn't in 4.1.2 # Random code often does / 0. Unfortunately VL_DIV_I(0,0) will warn # without this flag, even though there's a conditional to prevent the divide. # We still don't add no-div-by-zero as it throws message to stdout, though doesn't die. #_MY_CXX_CHECK_OPT(-Wno-div-by-zero) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-faligned-new) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-fbracket-depth=4096) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Qunused-arguments) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-parentheses-equality) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-sign-compare) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-uninitialized) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-unused-but-set-variable) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-unused-parameter) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-unused-variable) _MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-Wno-shadow) AC_SUBST(CFG_CXXFLAGS_NO_UNUSED) # Checks for library functions. AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec], [AC_DEFINE([HAVE_STAT_NSEC],[1],[Defined if struct stat has st_mtim.tv_nsec])], [], [#include ]) # Checks for system services # Other install directories pkgdatadir=${datadir}/verilator AC_SUBST(pkgdatadir) pkgconfigdir=${datadir}/pkgconfig AC_SUBST(pkgconfigdir) AC_OUTPUT AC_MSG_RESULT([]) AC_MSG_RESULT([Now type 'make' (or sometimes 'gmake') to build Verilator.]) AC_MSG_RESULT([])