diff options
Diffstat (limited to 'config/acx.m4')
| -rw-r--r-- | config/acx.m4 | 621 |
1 files changed, 621 insertions, 0 deletions
diff --git a/config/acx.m4 b/config/acx.m4 new file mode 100644 index 000000000..9ff31eb85 --- /dev/null +++ b/config/acx.m4 @@ -0,0 +1,621 @@ +# Autoconf M4 include file defining utility macros for complex Canadian +# cross builds. + +dnl #### +dnl # _GCC_TOPLEV_NONCANONICAL_BUILD +dnl # $build_alias or canonical $build if blank. +dnl # Used when we would use $build_alias, but empty is not OK. +AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_BUILD], +[AC_REQUIRE([AC_CANONICAL_BUILD]) []dnl +case ${build_alias} in + "") build_noncanonical=${build} ;; + *) build_noncanonical=${build_alias} ;; +esac +]) []dnl # _GCC_TOPLEV_NONCANONICAL_BUILD + +dnl #### +dnl # _GCC_TOPLEV_NONCANONICAL_HOST +dnl # $host_alias, or $build_noncanonical if blank. +dnl # Used when we would use $host_alias, but empty is not OK. +AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_HOST], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl +case ${host_alias} in + "") host_noncanonical=${build_noncanonical} ;; + *) host_noncanonical=${host_alias} ;; +esac +]) []dnl # _GCC_TOPLEV_NONCANONICAL_HOST + +dnl #### +dnl # _GCC_TOPLEV_NONCANONICAL_TARGET +dnl # $target_alias or $host_noncanonical if blank. +dnl # Used when we would use $target_alias, but empty is not OK. +AC_DEFUN([_GCC_TOPLEV_NONCANONICAL_TARGET], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl +case ${target_alias} in + "") target_noncanonical=${host_noncanonical} ;; + *) target_noncanonical=${target_alias} ;; +esac +]) []dnl # _GCC_TOPLEV_NONCANONICAL_TARGET + +dnl #### +dnl # ACX_NONCANONICAL_BUILD +dnl # Like underscored version, but AC_SUBST's. +AC_DEFUN([ACX_NONCANONICAL_BUILD], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl +AC_SUBST(build_noncanonical) +]) []dnl # ACX_NONCANONICAL_BUILD + +dnl #### +dnl # ACX_NONCANONICAL_HOST +dnl # Like underscored version, but AC_SUBST's. +AC_DEFUN([ACX_NONCANONICAL_HOST], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_HOST]) []dnl +AC_SUBST(host_noncanonical) +]) []dnl # ACX_NONCANONICAL_HOST + +dnl #### +dnl # ACX_NONCANONICAL_TARGET +dnl # Like underscored version, but AC_SUBST's. +AC_DEFUN([ACX_NONCANONICAL_TARGET], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl +AC_SUBST(target_noncanonical) +]) []dnl # ACX_NONCANONICAL_TARGET + +dnl #### +dnl # GCC_TOPLEV_SUBDIRS +dnl # GCC & friends build 'build', 'host', and 'target' tools. These must +dnl # be separated into three well-known subdirectories of the build directory: +dnl # build_subdir, host_subdir, and target_subdir. The values are determined +dnl # here so that they can (theoretically) be changed in the future. They +dnl # were previously reproduced across many different files. +dnl # +dnl # This logic really amounts to very little with autoconf 2.13; it will +dnl # amount to a lot more with autoconf 2.5x. +AC_DEFUN([GCC_TOPLEV_SUBDIRS], +[AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_TARGET]) []dnl +AC_REQUIRE([_GCC_TOPLEV_NONCANONICAL_BUILD]) []dnl + +# post-stage1 host modules use a different CC_FOR_BUILD so, in order to +# have matching libraries, they should use host libraries: Makefile.tpl +# arranges to pass --with-build-libsubdir=$(HOST_SUBDIR). +# However, they still use the build modules, because the corresponding +# host modules (e.g. bison) are only built for the host when bootstrap +# finishes. So: +# - build_subdir is where we find build modules, and never changes. +# - build_libsubdir is where we find build libraries, and can be overridden. + +# Prefix 'build-' so this never conflicts with target_subdir. +build_subdir="build-${build_noncanonical}" +AC_ARG_WITH(build-libsubdir, +[ --with-build-libsubdir=[DIR] Directory where to find libraries for build system], +build_libsubdir="$withval", +build_libsubdir="$build_subdir") +# --srcdir=. covers the toplevel, while "test -d" covers the subdirectories +if ( test $srcdir = . && test -d gcc ) \ + || test -d $srcdir/../host-${host_noncanonical}; then + host_subdir="host-${host_noncanonical}" +else + host_subdir=. +fi +# No prefix. +target_subdir=${target_noncanonical} +AC_SUBST([build_libsubdir]) []dnl +AC_SUBST([build_subdir]) []dnl +AC_SUBST([host_subdir]) []dnl +AC_SUBST([target_subdir]) []dnl +]) []dnl # GCC_TOPLEV_SUBDIRS + + +#### +# _NCN_TOOL_PREFIXES: Some stuff that oughtta be done in AC_CANONICAL_SYSTEM +# or AC_INIT. +# These demand that AC_CANONICAL_SYSTEM be called beforehand. +AC_DEFUN([_NCN_TOOL_PREFIXES], +[ncn_tool_prefix= +test -n "$host_alias" && ncn_tool_prefix=$host_alias- +ncn_target_tool_prefix= +test -n "$target_alias" && ncn_target_tool_prefix=$target_alias- +]) []dnl # _NCN_TOOL_PREFIXES + +#### +# NCN_STRICT_CHECK_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) +# Like plain AC_CHECK_TOOLS, but require prefix if build!=host. + +AC_DEFUN([NCN_STRICT_CHECK_TOOLS], +[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl +AC_ARG_VAR([$1], [$1 for the host]) + +if test -n "[$]$1"; then + ac_cv_prog_$1=[$]$1 +elif test -n "$ac_cv_prog_$1"; then + $1=$ac_cv_prog_$1 +fi + +if test -n "$ac_cv_prog_$1"; then + for ncn_progname in $2; do + AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) + done +fi + +for ncn_progname in $2; do + if test -n "$ncn_tool_prefix"; then + AC_CHECK_PROG([$1], [${ncn_tool_prefix}${ncn_progname}], + [${ncn_tool_prefix}${ncn_progname}], , [$4]) + fi + if test -z "$ac_cv_prog_$1" && test $build = $host ; then + AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) + fi + test -n "$ac_cv_prog_$1" && break +done + +if test -z "$ac_cv_prog_$1" ; then + ifelse([$3],[], [set dummy $2 + if test $build = $host ; then + $1="[$]2" + else + $1="${ncn_tool_prefix}[$]2" + fi], [$1="$3"]) +fi +]) []dnl # NCN_STRICT_CHECK_TOOLS + +#### +# NCN_STRICT_CHECK_TARGET_TOOLS(variable, progs-to-check-for,[value-if-not-found],[path]) +# Like CVS Autoconf AC_CHECK_TARGET_TOOLS, but require prefix if build!=target. + +AC_DEFUN([NCN_STRICT_CHECK_TARGET_TOOLS], +[AC_REQUIRE([_NCN_TOOL_PREFIXES]) []dnl +AC_ARG_VAR([$1], patsubst([$1], [_FOR_TARGET$], [])[ for the target]) + +if test -n "[$]$1"; then + ac_cv_prog_$1=[$]$1 +elif test -n "$ac_cv_prog_$1"; then + $1=$ac_cv_prog_$1 +fi + +if test -n "$ac_cv_prog_$1"; then + for ncn_progname in $2; do + AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) + done +fi + +if test -z "$ac_cv_prog_$1" && test -n "$with_build_time_tools"; then + for ncn_progname in $2; do + AC_MSG_CHECKING([for ${ncn_progname} in $with_build_time_tools]) + if test -x $with_build_time_tools/${ncn_progname}; then + ac_cv_prog_$1=$with_build_time_tools/${ncn_progname} + AC_MSG_RESULT(yes) + break + else + AC_MSG_RESULT(no) + fi + done +fi + +if test -z "$ac_cv_prog_$1"; then + for ncn_progname in $2; do + if test -n "$ncn_target_tool_prefix"; then + AC_CHECK_PROG([$1], [${ncn_target_tool_prefix}${ncn_progname}], + [${ncn_target_tool_prefix}${ncn_progname}], , [$4]) + fi + if test -z "$ac_cv_prog_$1" && test $build = $target ; then + AC_CHECK_PROG([$1], [${ncn_progname}], [${ncn_progname}], , [$4]) + fi + test -n "$ac_cv_prog_$1" && break + done +fi + +if test -z "$ac_cv_prog_$1" ; then + ifelse([$3],[], [set dummy $2 + if test $build = $target ; then + $1="[$]2" + else + $1="${ncn_target_tool_prefix}[$]2" + fi], [$1="$3"]) +else + $1="$ac_cv_prog_$1" +fi +]) []dnl # NCN_STRICT_CHECK_TARGET_TOOLS + + +# Backported from Autoconf 2.5x; can go away when and if +# we switch. Put the OS path separator in $PATH_SEPARATOR. +AC_DEFUN([ACX_PATH_SEP], [ +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + echo "#! /bin/sh" >conf$$.sh + echo "exit 0" >>conf$$.sh + chmod +x conf$$.sh + if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then + PATH_SEPARATOR=';' + else + PATH_SEPARATOR=: + fi + rm -f conf$$.sh +fi +]) + + +AC_DEFUN([ACX_TOOL_DIRS], [ +AC_REQUIRE([ACX_PATH_SEP]) +if test "x$exec_prefix" = xNONE; then + if test "x$prefix" = xNONE; then + gcc_cv_tool_prefix=$ac_default_prefix + else + gcc_cv_tool_prefix=$prefix + fi +else + gcc_cv_tool_prefix=$exec_prefix +fi + +# If there is no compiler in the tree, use the PATH only. In any +# case, if there is no compiler in the tree nobody should use +# AS_FOR_TARGET and LD_FOR_TARGET. +if test x$host = x$build && test -f $srcdir/gcc/BASE-VER; then + gcc_version=`cat $srcdir/gcc/BASE-VER` + gcc_cv_tool_dirs="$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" + gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/libexec/gcc/$target_noncanonical$PATH_SEPARATOR" + gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical/$gcc_version$PATH_SEPARATOR" + gcc_cv_tool_dirs="$gcc_cv_tool_dirs/usr/lib/gcc/$target_noncanonical$PATH_SEPARATOR" + gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version$PATH_SEPARATOR" + gcc_cv_tool_dirs="$gcc_cv_tool_dirs$gcc_cv_tool_prefix/$target_noncanonical/bin$PATH_SEPARATOR" +else + gcc_cv_tool_dirs= +fi + +if test x$build = x$target && test -n "$md_exec_prefix"; then + gcc_cv_tool_dirs="$gcc_cv_tool_dirs$md_exec_prefix$PATH_SEPARATOR" +fi + +]) []dnl # ACX_TOOL_DIRS + +# ACX_HAVE_GCC_FOR_TARGET +# Check if the variable GCC_FOR_TARGET really points to a GCC binary. +AC_DEFUN([ACX_HAVE_GCC_FOR_TARGET], [ +cat > conftest.c << \EOF +#ifdef __GNUC__ + gcc_yay; +#endif +EOF +if ($GCC_FOR_TARGET -E conftest.c | grep gcc_yay) > /dev/null 2>&1; then + have_gcc_for_target=yes +else + GCC_FOR_TARGET=${ncn_target_tool_prefix}gcc + have_gcc_for_target=no +fi +rm conftest.c +]) + +# ACX_CHECK_INSTALLED_TARGET_TOOL(VAR, PROG) +# Searching for installed target binutils. We need to take extra care, +# else we may find the wrong assembler, linker, etc., and lose. +# +# First try --with-build-time-tools, if specified. +# +# For build != host, we ask the installed GCC for the name of the tool it +# uses, and accept it if it is an absolute path. This is because the +# only good choice for a compiler is the same GCC version that is being +# installed (or we couldn't make target libraries), and we assume that +# on the host system we'll have not only the same GCC version, but also +# the same binutils version. +# +# For build == host, search the same directories that the installed +# compiler will search. We used to do this for the assembler, linker, +# and nm only; for simplicity of configuration, however, we extend this +# criterion to tools (such as ar and ranlib) that are never invoked by +# the compiler, to avoid mismatches. +# +# Also note we have to check MD_EXEC_PREFIX before checking the user's path +# if build == target. This makes the most sense only when bootstrapping, +# but we also do so when build != host. In this case, we hope that the +# build and host systems will have similar contents of MD_EXEC_PREFIX. +# +# If we do not find a suitable binary, then try the user's path. + +AC_DEFUN([ACX_CHECK_INSTALLED_TARGET_TOOL], [ +AC_REQUIRE([ACX_TOOL_DIRS]) +AC_REQUIRE([ACX_HAVE_GCC_FOR_TARGET]) +if test -z "$ac_cv_path_$1" ; then + if test -n "$with_build_time_tools"; then + AC_MSG_CHECKING([for $2 in $with_build_time_tools]) + if test -x $with_build_time_tools/$2; then + $1=`cd $with_build_time_tools && pwd`/$2 + ac_cv_path_$1=[$]$1 + AC_MSG_RESULT([$ac_cv_path_$1]) + else + AC_MSG_RESULT(no) + fi + elif test $build != $host && test $have_gcc_for_target = yes; then + $1=`$GCC_FOR_TARGET --print-prog-name=$2` + test [$]$1 = $2 && $1= + test -n "[$]$1" && ac_cv_path_$1=[$]$1 + fi +fi +if test -z "$ac_cv_path_$1" && test -n "$gcc_cv_tool_dirs"; then + AC_PATH_PROG([$1], [$2], [], [$gcc_cv_tool_dirs]) +fi +if test -z "$ac_cv_path_$1" ; then + NCN_STRICT_CHECK_TARGET_TOOLS([$1], [$2]) +else + $1=$ac_cv_path_$1 +fi +]) []dnl # ACX_CHECK_INSTALLED_TARGET_TOOL + +### +# AC_PROG_CPP_WERROR +# Used for autoconf 2.5x to force AC_PREPROC_IFELSE to reject code which +# triggers warnings from the preprocessor. Will be in autoconf 2.58. +# For now, using this also overrides header checks to use only the +# preprocessor (matches 2.13 behavior; matching 2.58's behavior is a +# bit harder from here). +# Eventually autoconf will default to checking headers with the compiler +# instead, and we'll have to do this differently. + +AC_DEFUN([AC_PROG_CPP_WERROR], +[AC_REQUIRE([AC_PROG_CPP])dnl +m4_define([AC_CHECK_HEADER],m4_defn([_AC_CHECK_HEADER_OLD])) +ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR + +# Test for GNAT. +# We require the gnatbind & gnatmake programs, as well as a compiler driver +# that understands Ada. We use the user's CC setting, already found, and +# possibly add $1 to the command-line parameters. +# +# Sets the shell variable have_gnat to yes or no as appropriate, and +# substitutes GNATBIND and GNATMAKE. +AC_DEFUN([ACX_PROG_GNAT], +[AC_REQUIRE([AC_CHECK_TOOL_PREFIX]) +AC_REQUIRE([AC_PROG_CC]) +AC_CHECK_TOOL(GNATBIND, gnatbind, no) +AC_CHECK_TOOL(GNATMAKE, gnatmake, no) +AC_CACHE_CHECK([whether compiler driver understands Ada], + acx_cv_cc_gcc_supports_ada, +[cat >conftest.adb <<EOF +procedure conftest is begin null; end conftest; +EOF +acx_cv_cc_gcc_supports_ada=no +# There is a bug in old released versions of GCC which causes the +# driver to exit successfully when the appropriate language module +# has not been installed. This is fixed in 2.95.4, 3.0.2, and 3.1. +# Therefore we must check for the error message as well as an +# unsuccessful exit. +# Other compilers, like HP Tru64 UNIX cc, exit successfully when +# given a .adb file, but produce no object file. So we must check +# if an object file was really produced to guard against this. +errors=`(${CC} $1[]m4_ifval([$1], [ ])-c conftest.adb) 2>&1 || echo failure` +if test x"$errors" = x && test -f conftest.$ac_objext; then + acx_cv_cc_gcc_supports_ada=yes +fi +rm -f conftest.*]) + +if test "x$GNATBIND" != xno && test "x$GNATMAKE" != xno && test x$acx_cv_cc_gcc_supports_ada != xno; then + have_gnat=yes +else + have_gnat=no +fi +]) + +dnl 'make compare' can be significantly faster, if cmp itself can +dnl skip bytes instead of using tail. The test being performed is +dnl "if cmp --ignore-initial=2 t1 t2 && ! cmp --ignore-initial=1 t1 t2" +dnl but we need to sink errors and handle broken shells. We also test +dnl for the parameter format "cmp file1 file2 skip1 skip2" which is +dnl accepted by cmp on some systems. +AC_DEFUN([ACX_PROG_CMP_IGNORE_INITIAL], +[AC_CACHE_CHECK([how to compare bootstrapped objects], gcc_cv_prog_cmp_skip, +[ echo abfoo >t1 + echo cdfoo >t2 + gcc_cv_prog_cmp_skip='tail +16c $$f1 > tmp-foo1; tail +16c $$f2 > tmp-foo2; cmp tmp-foo1 tmp-foo2' + if cmp t1 t2 2 2 > /dev/null 2>&1; then + if cmp t1 t2 1 1 > /dev/null 2>&1; then + : + else + gcc_cv_prog_cmp_skip='cmp $$f1 $$f2 16 16' + fi + fi + if cmp --ignore-initial=2 t1 t2 > /dev/null 2>&1; then + if cmp --ignore-initial=1 t1 t2 > /dev/null 2>&1; then + : + else + gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2' + fi + fi + rm t1 t2 +]) +do_compare="$gcc_cv_prog_cmp_skip" +AC_SUBST(do_compare) +]) + +dnl See whether we can include both string.h and strings.h. +AC_DEFUN([ACX_HEADER_STRING], +[AC_CACHE_CHECK([whether string.h and strings.h may both be included], + gcc_cv_header_string, +[AC_TRY_COMPILE([#include <string.h> +#include <strings.h>], , gcc_cv_header_string=yes, gcc_cv_header_string=no)]) +if test $gcc_cv_header_string = yes; then + AC_DEFINE(STRING_WITH_STRINGS, 1, [Define if you can safely include both <string.h> and <strings.h>.]) +fi +]) + +dnl See if stdbool.h properly defines bool and true/false. +dnl Check whether _Bool is built-in. +AC_DEFUN([ACX_HEADER_STDBOOL], +[AC_CACHE_CHECK([for working stdbool.h], + ac_cv_header_stdbool_h, +[AC_TRY_COMPILE([#include <stdbool.h>], +[bool foo = false;], +ac_cv_header_stdbool_h=yes, ac_cv_header_stdbool_h=no)]) +if test $ac_cv_header_stdbool_h = yes; then + AC_DEFINE(HAVE_STDBOOL_H, 1, + [Define if you have a working <stdbool.h> header file.]) +fi +AC_CACHE_CHECK(for built-in _Bool, gcc_cv_c__bool, +[AC_TRY_COMPILE(, +[_Bool foo;], +gcc_cv_c__bool=yes, gcc_cv_c__bool=no) +]) +if test $gcc_cv_c__bool = yes; then + AC_DEFINE(HAVE__BOOL, 1, [Define if the \`_Bool' type is built-in.]) +fi +]) + +dnl See if hard links work and if not, try to substitute $1 or simple copy. +AC_DEFUN([ACX_PROG_LN], +[AC_MSG_CHECKING(whether ln works) +AC_CACHE_VAL(acx_cv_prog_LN, +[rm -f conftestdata_t +echo >conftestdata_f +if ln conftestdata_f conftestdata_t 2>/dev/null +then + acx_cv_prog_LN=ln +else + acx_cv_prog_LN=no +fi +rm -f conftestdata_f conftestdata_t +])dnl +if test $acx_cv_prog_LN = no; then + LN="ifelse([$1],,cp,[$1])" + AC_MSG_RESULT([no, using $LN]) +else + LN="$acx_cv_prog_LN" + AC_MSG_RESULT(yes) +fi +AC_SUBST(LN)dnl +]) + +dnl GCC_TARGET_TOOL(PROGRAM, TARGET-VAR, HOST-VAR, IN-TREE-TOOL, LANGUAGE) +AC_DEFUN([GCC_TARGET_TOOL], +[AC_MSG_CHECKING(where to find the target $1) +if test "x${build}" != "x${host}" ; then + if expr "x[$]$2" : "x/" > /dev/null; then + # We already found the complete path + ac_dir=`dirname [$]$2` + AC_MSG_RESULT(pre-installed in $ac_dir) + else + # Canadian cross, just use what we found + AC_MSG_RESULT(pre-installed) + fi +else + ifelse([$4],,, + [ok=yes + case " ${configdirs} " in + *" patsubst([$4], [/.*], []) "*) ;; + *) ok=no ;; + esac + ifelse([$5],,, + [case ,${enable_languages}, in + *,$5,*) ;; + *) ok=no ;; + esac]) + if test $ok = yes; then + # An in-tree tool is available and we can use it + $2='$$r/$(HOST_SUBDIR)/$4' + AC_MSG_RESULT(just compiled) + el])if expr "x[$]$2" : "x/" > /dev/null; then + # We already found the complete path + ac_dir=`dirname [$]$2` + AC_MSG_RESULT(pre-installed in $ac_dir) + elif test "x$target" = "x$host"; then + # We can use an host tool + $2='$($3)' + AC_MSG_RESULT(host tool) + else + # We need a cross tool + AC_MSG_RESULT(pre-installed) + fi +fi +AC_SUBST($2)]) + + +dnl Locate a program and check that its version is acceptable. +dnl ACX_PROG_CHECK_VER(var, name, version-switch, +dnl version-extract-regexp, version-glob) +AC_DEFUN([ACX_CHECK_PROG_VER],[ + AC_CHECK_PROG([$1], [$2], [$2]) + if test -n "[$]$1"; then + # Found it, now check the version. + AC_CACHE_CHECK([for modern $2], + [gcc_cv_prog_$2_modern], + [ac_prog_version=`eval [$]$1 $3 2>&1 | + sed -n 's/^.*patsubst([[$4]],/,\/).*$/\1/p'` + + [case $ac_prog_version in + '') gcc_cv_prog_$2_modern=no;; + $5) gcc_cv_prog_$2_modern=yes;; + *) gcc_cv_prog_$2_modern=no;; + esac] + ]) + else + gcc_cv_prog_$2_modern=no + fi + if test $gcc_cv_prog_$2_modern = no; then + $1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2" + fi +]) + +dnl Support the --with-pkgversion configure option. +dnl ACX_PKGVERSION(default-pkgversion) +AC_DEFUN([ACX_PKGVERSION],[ + AC_ARG_WITH(pkgversion, + AS_HELP_STRING([--with-pkgversion=PKG], + [Use PKG in the version string in place of "$1"]), + [case "$withval" in + yes) AC_MSG_ERROR([package version not specified]) ;; + no) PKGVERSION= ;; + *) PKGVERSION="($withval) " ;; + esac], + PKGVERSION="($1) " + ) + AC_SUBST(PKGVERSION) +]) + +dnl Support the --with-bugurl configure option. +dnl ACX_BUGURL(default-bugurl) +AC_DEFUN([ACX_BUGURL],[ + AC_ARG_WITH(bugurl, + AS_HELP_STRING([--with-bugurl=URL], + [Direct users to URL to report a bug]), + [case "$withval" in + yes) AC_MSG_ERROR([bug URL not specified]) ;; + no) BUGURL= + ;; + *) BUGURL="$withval" + ;; + esac], + BUGURL="$1" + ) + case ${BUGURL} in + "") + REPORT_BUGS_TO= + REPORT_BUGS_TEXI= + ;; + *) + REPORT_BUGS_TO="<$BUGURL>" + REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`} + ;; + esac; + AC_SUBST(REPORT_BUGS_TO) + AC_SUBST(REPORT_BUGS_TEXI) +]) + +dnl #### +dnl # ACX_CHECK_CYGWIN_CAT_WORKS +dnl # On Cygwin hosts, check that the cat command ignores +dnl # carriage returns as otherwise builds will not work. +dnl # See binutils PR 4334 for more details. +AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[ +AC_MSG_CHECKING([to see if cat works as expected]) +echo a >cygwin-cat-check +if test `cat cygwin-cat-check` = a ; then + rm cygwin-cat-check + AC_MSG_RESULT(yes) +else + rm cygwin-cat-check + AC_MSG_RESULT(no) + AC_MSG_ERROR([The cat command does not ignore carriage return characters. + Please either mount the build directory in binary mode or run the following + commands before running any configure script: +set -o igncr +export SHELLOPTS + ]) +fi +]) |