# AX_ENABLE_SUFFIX # ---------------- # Create the configure option --enable-suffix[=suffix] to generate suffix # strings for the installed commands. This allows for shared installs of # different builds. Remember to change the default suffix string to some # value appropriate for the current version. AC_DEFUN([AX_ENABLE_SUFFIX], [AC_ARG_ENABLE([suffix],[AC_HELP_STRING([--enable-suffix], [Use/set the installation command suffix])], [true],[enable_suffix=no]) if test X$enable_suffix = Xyes; then install_suffix='-0.10' elif test X$enable_suffix = Xno; then install_suffix='' else install_suffix="$enable_suffix" fi AC_SUBST(install_suffix) ])# AX_ENABLE_SUFFIX # _AX_C_UNDERSCORES_MATCH_IFELSE(PATTERN, ACTION-IF-MATCH, ACTION-IF-NOMATCH) # ------------------------------ # Sub-macro for AX_C_UNDERSCORES_LEADING and AX_C_UNDERSCORES_TRAILING. # Unwarranted assumptions: # - the object file produced by AC_COMPILE_IFELSE is called "conftest.$ac_objext" # - the nm(1) utility is available, and its name is "nm". AC_DEFUN([_AX_C_UNDERSCORES_MATCH_IF], [AC_COMPILE_IFELSE([AC_LANG_SOURCE([void underscore(void){}])], [AS_IF([nm conftest.$ac_objext|grep $1 >/dev/null 2>/dev/null],[$2],[$3])], [AC_MSG_ERROR([underscore test crashed])] )]) # AX_C_UNDERSCORES_LEADING # --------------------------------- # Check if symbol names in object files produced by C compiler have # leading underscores. Define NEED_LU if so. AC_DEFUN([AX_C_UNDERSCORES_LEADING], [AC_CACHE_CHECK([for leading underscores], ax_cv_c_underscores_leading, [_AX_C_UNDERSCORES_MATCH_IF([_underscore], [AS_VAR_SET(ax_cv_c_underscores_leading, yes)], [AS_VAR_SET(ax_cv_c_underscores_leading, no)])]) if test $ax_cv_c_underscores_leading = yes -a "$CYGWIN" != "yes" -a "$MINGW32" != "yes"; then AC_DEFINE([NEED_LU], [1], [Symbol names in object files produced by C compiler have leading underscores.]) fi ])# AX_C_UNDERSCORES_LEADING # AX_C_UNDERSCORES_TRAILING # --------------------------------- # Check if symbol names in object files produced by C compiler have # trailing underscores. Define NEED_TU if so. AC_DEFUN([AX_C_UNDERSCORES_TRAILING], [AC_CACHE_CHECK([for trailing underscores], ax_cv_c_underscores_trailing, [_AX_C_UNDERSCORES_MATCH_IF([underscore_], [AS_VAR_SET(ax_cv_c_underscores_trailing, yes)], [AS_VAR_SET(ax_cv_c_underscores_trailing, no)])]) if test $ax_cv_c_underscores_trailing = yes; then AC_DEFINE([NEED_TU], [1], [Symbol names in object files produced by C compiler have trailing underscores.]) fi ])# AX_C_UNDERSCORES_TRAILING # AX_WIN32 # -------- # Combined check for several flavors of Microsoft Windows so # their "issues" can be dealt with AC_DEFUN([AX_WIN32], [AC_MSG_CHECKING([for Microsoft Windows]) AC_REQUIRE([AC_CANONICAL_HOST]) []dnl case $host_os in *cygwin*) MINGW32=no; WIN32=yes;; *mingw*) MINGW32=yes; WIN32=yes;; *) MINGW32=no; WIN32=no;; esac AC_SUBST(MINGW32) AC_SUBST(WIN32) AC_MSG_RESULT($WIN32) if test $WIN32 = yes; then AC_MSG_CHECKING([for MinGW]) AC_MSG_RESULT($MINGW32) fi ])# AX_WIN32 # AX_LD_EXTRALIBS # --------------- # mingw needs to link with libiberty.a, but cygwin alone can't tolerate it AC_DEFUN([AX_LD_EXTRALIBS], [AC_MSG_CHECKING([for extra libs needed]) EXTRALIBS= case "${host}" in *-*-cygwin* ) if test "$MINGW32" = "yes"; then EXTRALIBS="-liberty" fi ;; esac AC_SUBST(EXTRALIBS) AC_MSG_RESULT($EXTRALIBS) ])# AX_LD_EXTRALIBS # AX_LD_SHAREDLIB_OPTS # -------------------- # linker options when building a shared library AC_DEFUN([AX_LD_SHAREDLIB_OPTS], [AC_MSG_CHECKING([for shared library link flag]) shared=-shared case "${host}" in *-*-cygwin*) shared="-shared -Wl,--enable-auto-image-base" ;; *-*-mingw*) shared="-shared -Wl,--enable-auto-image-base" ;; *-*-hpux*) shared="-b" ;; *-*-darwin1.[0123]) shared="-bundle -undefined suppress" ;; *-*-darwin*) shared="-bundle -undefined suppress -flat_namespace" ;; *-*-solaris*) if test ${using_sunpro_c} = 1 then shared="-G" fi ;; esac AC_SUBST(shared) AC_MSG_RESULT($shared) ])# AX_LD_SHAREDLIB_OPTS # AX_C_PICFLAG # ------------ # The -fPIC flag is used to tell the compiler to make position # independent code. It is needed when making shared objects. AC_DEFUN([AX_C_PICFLAG], [AC_MSG_CHECKING([for flag to make position independent code]) PICFLAG=-fPIC case "${host}" in *-*-cygwin*) PICFLAG= ;; *-*-mingw*) PICFLAG= ;; *-*-hpux*) PICFLAG=+z ;; *-*-solaris*) if test ${using_sunpro_c} = 1 then PICFLAG=-G fi ;; esac AC_SUBST(PICFLAG) AC_MSG_RESULT($PICFLAG) ])# AX_C_PICFLAG # AX_LD_RDYNAMIC # -------------- # The -rdynamic flag is used by iverilog when compiling the target, # to know how to export symbols of the main program to loadable modules # that are brought in by -ldl AC_DEFUN([AX_LD_RDYNAMIC], [AC_MSG_CHECKING([for -rdynamic compiler flag]) rdynamic=-rdynamic case "${host}" in *-*-netbsd*) rdynamic="-Wl,--export-dynamic" ;; *-*-openbsd*) rdynamic="-Wl,--export-dynamic" ;; *-*-solaris*) rdynamic="" ;; *-*-cygwin*) rdynamic="" ;; *-*-mingw*) rdynamic="" ;; *-*-hpux*) rdynamic="-E" ;; *-*-darwin*) rdynamic="-Wl,-all_load" strip_dynamic="-SX" ;; esac AC_SUBST(rdynamic) AC_MSG_RESULT($rdynamic) AC_SUBST(strip_dynamic) # since we didn't tell them we're "checking", no good place to tell the answer # AC_MSG_RESULT($strip_dynamic) ])# AX_LD_RDYNAMIC # AX_C99_STRTOD # ------------- AC_DEFUN([AX_C99_STRTOD], [# On MinGW we need to jump through hoops to get a C99 compliant strtod(). # mingw-w64 doesn't need this, and the 64-bit version doesn't support it. case "${host}" in x86_64-w64-mingw32) ;; *-*-mingw32) LDFLAGS+=" -Wl,--undefined=___strtod,--wrap,strtod,--defsym,___wrap_strtod=___strtod" ;; esac ])# AX_C99_STRTOD # When config.status generates a header, we must update the stamp-h file. # This file resides in the same directory as the config header # that is generated. The stamp file name are based on the header name. # Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the # loop where config.status creates the headers, so we can generate # our stamp files there. AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK], [ _config_header=$1 _stamp_name=stamp-`expr //$_config_header : '.*/\([[^./]]*\)\.[[^./]]*$'`-h echo "timestamp for $_config_header" > `AS_DIRNAME(["$_config_header"])`/[]$_stamp_name ]) #_AC_AM_CONFIG_HEADER_HOOK # =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html # =========================================================================== # # SYNOPSIS # # AX_PROG_CC_FOR_BUILD # # DESCRIPTION # # This macro searches for a C compiler that generates native executables, # that is a C compiler that surely is not a cross-compiler. This can be # useful if you have to generate source code at compile-time like for # example GCC does. # # The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything # needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). # The value of these variables can be overridden by the user by specifying # a compiler with an environment variable (like you do for standard CC). # # It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object # file extensions for the build platform, and GCC_FOR_BUILD to `yes' if # the compiler we found is GCC. All these variables but GCC_FOR_BUILD are # substituted in the Makefile. # # LICENSE # # Copyright (c) 2008 Paolo Bonzini # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. #serial 8 AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl AC_REQUIRE([AC_PROG_CC])dnl AC_REQUIRE([AC_PROG_CPP])dnl AC_REQUIRE([AC_EXEEXT])dnl AC_REQUIRE([AC_CANONICAL_HOST])dnl dnl Use the standard macros, but make them use other variable names dnl pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl pushdef([ac_cv_objext], ac_cv_build_objext)dnl pushdef([ac_exeext], ac_build_exeext)dnl pushdef([ac_objext], ac_build_objext)dnl pushdef([CC], CC_FOR_BUILD)dnl pushdef([CPP], CPP_FOR_BUILD)dnl pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl pushdef([host], build)dnl pushdef([host_alias], build_alias)dnl pushdef([host_cpu], build_cpu)dnl pushdef([host_vendor], build_vendor)dnl pushdef([host_os], build_os)dnl pushdef([ac_cv_host], ac_cv_build)dnl pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl pushdef([ac_cv_host_os], ac_cv_build_os)dnl pushdef([ac_cpp], ac_build_cpp)dnl pushdef([ac_compile], ac_build_compile)dnl pushdef([ac_link], ac_build_link)dnl save_cross_compiling=$cross_compiling save_ac_tool_prefix=$ac_tool_prefix cross_compiling=no ac_tool_prefix= AC_PROG_CC AC_PROG_CPP AC_EXEEXT ac_tool_prefix=$save_ac_tool_prefix cross_compiling=$save_cross_compiling dnl Restore the old definitions dnl popdef([ac_link])dnl popdef([ac_compile])dnl popdef([ac_cpp])dnl popdef([ac_cv_host_os])dnl popdef([ac_cv_host_vendor])dnl popdef([ac_cv_host_cpu])dnl popdef([ac_cv_host_alias])dnl popdef([ac_cv_host])dnl popdef([host_os])dnl popdef([host_vendor])dnl popdef([host_cpu])dnl popdef([host_alias])dnl popdef([host])dnl popdef([LDFLAGS])dnl popdef([CPPFLAGS])dnl popdef([CFLAGS])dnl popdef([CPP])dnl popdef([CC])dnl popdef([ac_objext])dnl popdef([ac_exeext])dnl popdef([ac_cv_objext])dnl popdef([ac_cv_exeext])dnl popdef([ac_cv_prog_cc_g])dnl popdef([ac_cv_prog_cc_cross])dnl popdef([ac_cv_prog_cc_works])dnl popdef([ac_cv_prog_gcc])dnl popdef([ac_cv_prog_CPP])dnl dnl Finally, set Makefile variables dnl BUILD_EXEEXT=$ac_build_exeext BUILD_OBJEXT=$ac_build_objext AC_SUBST(BUILD_EXEEXT)dnl AC_SUBST(BUILD_OBJEXT)dnl AC_SUBST([CFLAGS_FOR_BUILD])dnl AC_SUBST([CPPFLAGS_FOR_BUILD])dnl AC_SUBST([LDFLAGS_FOR_BUILD])dnl ])