/usr/share/aclocal/pth.m4 is in libpth-dev 2.0.7-20.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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dnl ## GNU Pth - The GNU Portable Threads
dnl ## Copyright (c) 1999-2006 Ralf S. Engelschall <rse@engelschall.com>
dnl ##
dnl ## This file is part of GNU Pth, a non-preemptive thread scheduling
dnl ## library which can be found at http://www.gnu.org/software/pth/.
dnl ##
dnl ## This library is free software; you can redistribute it and/or
dnl ## modify it under the terms of the GNU Lesser General Public
dnl ## License as published by the Free Software Foundation; either
dnl ## version 2.1 of the License, or (at your option) any later version.
dnl ##
dnl ## This library is distributed in the hope that it will be useful,
dnl ## but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl ## Lesser General Public License for more details.
dnl ##
dnl ## You should have received a copy of the GNU Lesser General Public
dnl ## License along with this library; if not, write to the Free Software
dnl ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
dnl ## USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
dnl ##
dnl ## pth.m4: Autoconf macro for locating GNU Pth from within
dnl ## configure.ac of third-party software packages
dnl ##
dnl ##
dnl ## Synopsis:
dnl ## AC_CHECK_PTH([MIN-VERSION [, # minimum Pth version, e.g. 1.2.0
dnl ## DEFAULT-WITH-PTH [, # default value for --with-pth option
dnl ## DEFAULT-WITH-PTH-TEST [,# default value for --with-pth-test option
dnl ## EXTEND-VARS [, # whether CFLAGS/LDFLAGS/etc are extended
dnl ## ACTION-IF-FOUND [, # action to perform if Pth was found
dnl ## ACTION-IF-NOT-FOUND # action to perform if Pth was not found
dnl ## ]]]]]])
dnl ## Examples:
dnl ## AC_CHECK_PTH(1.2.0)
dnl ## AC_CHECK_PTH(1.2.0,,,no,CFLAGS="$CFLAGS -DHAVE_PTH $PTH_CFLAGS")
dnl ## AC_CHECK_PTH(1.2.0,yes,yes,yes,CFLAGS="$CFLAGS -DHAVE_PTH")
dnl ##
dnl
dnl # auxilliary macros
AC_DEFUN([_AC_PTH_ERROR], [dnl
AC_MSG_RESULT([*FAILED*])
m4_define(_ac_pth_line,dnl
"+------------------------------------------------------------------------+")
echo " _ac_pth_line" 1>&2
cat <<EOT | sed -e 's/^[[ ]]*/ | /' -e 's/>>/ /' 1>&2
$1
EOT
echo " _ac_pth_line" 1>&2
exit 1
])
AC_DEFUN([_AC_PTH_VERBOSE], [dnl
if test ".$verbose" = .yes; then
AC_MSG_RESULT([ $1])
fi
])
dnl # the user macro
AC_DEFUN([AC_CHECK_PTH], [dnl
dnl
dnl # prerequisites
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
dnl
PTH_CPPFLAGS=''
PTH_CFLAGS=''
PTH_LDFLAGS=''
PTH_LIBS=''
AC_SUBST(PTH_CPPFLAGS)
AC_SUBST(PTH_CFLAGS)
AC_SUBST(PTH_LDFLAGS)
AC_SUBST(PTH_LIBS)
dnl # command line options
AC_MSG_CHECKING(for GNU Pth)
_AC_PTH_VERBOSE([])
AC_ARG_WITH(pth,dnl
[ --with-pth[=ARG] Build with GNU Pth Library (default=]ifelse([$2],,yes,$2)[)],dnl
,dnl
with_pth="ifelse([$2],,yes,$2)"
)dnl
AC_ARG_WITH(pth-test,dnl
[ --with-pth-test Perform GNU Pth Sanity Test (default=]ifelse([$3],,yes,$3)[)],dnl
,dnl
with_pth_test="ifelse([$3],,yes,$3)"
)dnl
_AC_PTH_VERBOSE([+ Command Line Options:])
_AC_PTH_VERBOSE([ o --with-pth=$with_pth])
_AC_PTH_VERBOSE([ o --with-pth-test=$with_pth_test])
dnl
dnl # configuration
if test ".$with_pth" != .no; then
_pth_subdir=no
_pth_subdir_opts=''
case "$with_pth" in
subdir:* )
_pth_subdir=yes
changequote(, )dnl
_pth_subdir_opts=`echo $with_pth | sed -e 's/^subdir:[^ ]*[ ]*//'`
with_pth=`echo $with_pth | sed -e 's/^subdir:\([^ ]*\).*$/\1/'`
changequote([, ])dnl
;;
esac
_pth_version=""
_pth_location=""
_pth_type=""
_pth_cppflags=""
_pth_cflags=""
_pth_ldflags=""
_pth_libs=""
if test ".$with_pth" = .yes; then
# via config script in $PATH
changequote(, )dnl
_pth_version=`(pth-config --version) 2>/dev/null |\
sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
changequote([, ])dnl
if test ".$_pth_version" != .; then
_pth_location=`pth-config --prefix`
_pth_type='installed'
_pth_cppflags=`pth-config --cflags`
_pth_cflags=`pth-config --cflags`
_pth_ldflags=`pth-config --ldflags`
_pth_libs=`pth-config --libs --all`
fi
elif test -d "$with_pth"; then
with_pth=`echo $with_pth | sed -e 's;/*$;;'`
_pth_found=no
# via locally included source tree
if test ".$_pth_subdir" = .yes; then
_pth_location="$with_pth"
_pth_type='local'
_pth_cppflags="-I$with_pth"
_pth_cflags="-I$with_pth"
if test -f "$with_pth/ltconfig"; then
_pth_ldflags="-L$with_pth/.libs"
else
_pth_ldflags="-L$with_pth"
fi
_pth_libs="-lpth"
changequote(, )dnl
_pth_version=`grep '^const char PTH_Hello' $with_pth/pth_vers.c |\
sed -e 's;^.*Version[ ]*\([0-9]*\.[0-9]*[.ab][0-9]*\)[ ].*$;\1;'`
changequote([, ])dnl
_pth_found=yes
ac_configure_args="$ac_configure_args --enable-subdir $_pth_subdir_opts"
with_pth_test=no
fi
# via config script under a specified directory
# (a standard installation, but not a source tree)
if test ".$_pth_found" = .no; then
for _dir in $with_pth/bin $with_pth; do
if test -f "$_dir/pth-config"; then
test -f "$_dir/pth-config.in" && continue # pth-config in source tree!
changequote(, )dnl
_pth_version=`($_dir/pth-config --version) 2>/dev/null |\
sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
changequote([, ])dnl
if test ".$_pth_version" != .; then
_pth_location=`$_dir/pth-config --prefix`
_pth_type="installed"
_pth_cppflags=`$_dir/pth-config --cflags`
_pth_cflags=`$_dir/pth-config --cflags`
_pth_ldflags=`$_dir/pth-config --ldflags`
_pth_libs=`$_dir/pth-config --libs --all`
_pth_found=yes
break
fi
fi
done
fi
# in any subarea under a specified directory
# (either a special installation or a Pth source tree)
if test ".$_pth_found" = .no; then
changequote(, )dnl
_pth_found=0
for _file in x `find $with_pth -name "pth.h" -type f -print`; do
test .$_file = .x && continue
_dir=`echo $_file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
_pth_version=`($_dir/pth-config --version) 2>/dev/null |\
sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
if test ".$_pth_version" = .; then
_pth_version=`grep '^#define PTH_VERSION_STR' $_file |\
sed -e 's;^#define[ ]*PTH_VERSION_STR[ ]*"\([0-9]*\.[0-9]*[.ab][0-9]*\)[ ].*$;\1;'`
fi
_pth_cppflags="-I$_dir"
_pth_cflags="-I$_dir"
_pth_found=`expr $_pth_found + 1`
done
for _file in x `find $with_pth -name "libpth.[aso]" -type f -print`; do
test .$_file = .x && continue
_dir=`echo $_file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
_pth_ldflags="-L$_dir"
_pth_libs="-lpth"
_pth_found=`expr $_pth_found + 1`
done
changequote([, ])dnl
if test ".$_pth_found" = .2; then
_pth_location="$with_pth"
_pth_type="uninstalled"
else
_pth_version=''
fi
fi
fi
_AC_PTH_VERBOSE([+ Determined Location:])
_AC_PTH_VERBOSE([ o path: $_pth_location])
_AC_PTH_VERBOSE([ o type: $_pth_type])
if test ".$_pth_version" = .; then
if test ".$with_pth" != .yes; then
_AC_PTH_ERROR([dnl
Unable to locate GNU Pth under $with_pth.
Please specify the correct path to either a GNU Pth installation tree
(use --with-pth=DIR if you used --prefix=DIR for installing GNU Pth in
the past) or to a GNU Pth source tree (use --with-pth=DIR if DIR is a
path to a pth-X.Y.Z/ directory; but make sure the package is already
built, i.e., the "configure; make" step was already performed there).])
else
_AC_PTH_ERROR([dnl
Unable to locate GNU Pth in any system-wide location (see \$PATH).
Please specify the correct path to either a GNU Pth installation tree
(use --with-pth=DIR if you used --prefix=DIR for installing GNU Pth in
the past) or to a GNU Pth source tree (use --with-pth=DIR if DIR is a
path to a pth-X.Y.Z/ directory; but make sure the package is already
built, i.e., the "configure; make" step was already performed there).])
fi
fi
dnl #
dnl # Check whether the found version is sufficiently new
dnl #
_req_version="ifelse([$1],,1.0.0,$1)"
for _var in _pth_version _req_version; do
eval "_val=\"\$${_var}\""
_major=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\1/'`
_minor=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\2/'`
_rtype=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\3/'`
_micro=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\4/'`
case $_rtype in
"a" ) _rtype=0 ;;
"b" ) _rtype=1 ;;
"." ) _rtype=2 ;;
esac
_hex=`echo dummy | awk '{ printf("%d%02d%1d%02d", major, minor, rtype, micro); }' \
"major=$_major" "minor=$_minor" "rtype=$_rtype" "micro=$_micro"`
eval "${_var}_hex=\"\$_hex\""
done
_AC_PTH_VERBOSE([+ Determined Versions:])
_AC_PTH_VERBOSE([ o existing: $_pth_version -> 0x$_pth_version_hex])
_AC_PTH_VERBOSE([ o required: $_req_version -> 0x$_req_version_hex])
_ok=0
if test ".$_pth_version_hex" != .; then
if test ".$_req_version_hex" != .; then
if test $_pth_version_hex -ge $_req_version_hex; then
_ok=1
fi
fi
fi
if test ".$_ok" = .0; then
_AC_PTH_ERROR([dnl
Found Pth version $_pth_version, but required at least version $_req_version.
Upgrade Pth under $_pth_location to $_req_version or higher first, please.])
fi
dnl #
dnl # Perform Pth Sanity Compile Check
dnl #
if test ".$with_pth_test" = .yes; then
_ac_save_CPPFLAGS="$CPPFLAGS"
_ac_save_CFLAGS="$CFLAGS"
_ac_save_LDFLAGS="$LDFLAGS"
_ac_save_LIBS="$LIBS"
CPPFLAGS="$CPPFLAGS $_pth_cppflags"
CFLAGS="$CFLAGS $_pth_cflags"
LDFLAGS="$LDFLAGS $_pth_ldflags"
LIBS="$LIBS $_pth_libs"
_AC_PTH_VERBOSE([+ Test Build Environment:])
_AC_PTH_VERBOSE([ o CPPFLAGS=\"$CPPFLAGS\"])
_AC_PTH_VERBOSE([ o CFLAGS=\"$CFLAGS\"])
_AC_PTH_VERBOSE([ o LDFLAGS=\"$LDFLAGS\"])
_AC_PTH_VERBOSE([ o LIBS=\"$LIBS\"])
cross_compile=no
m4_define(_code1, [dnl
#include <stdio.h>
#include <pth.h>
])
m4_define(_code2, [dnl
int main(int argc, char *argv[])
{
FILE *fp;
if (!(fp = fopen("conftestval", "w")))
exit(1);
fprintf(fp, "hmm");
fclose(fp);
pth_init();
pth_kill();
if (!(fp = fopen("conftestval", "w")))
exit(1);
fprintf(fp, "yes");
fclose(fp);
exit(0);
}
])
_AC_PTH_VERBOSE([+ Performing Sanity Checks:])
_AC_PTH_VERBOSE([ o pre-processor test])
AC_TRY_CPP(_code1, _ok=yes, _ok=no)
if test ".$_ok" != .yes; then
_AC_PTH_ERROR([dnl
Found GNU Pth $_pth_version under $_pth_location, but
was unable to perform a sanity pre-processor check. This means
the GNU Pth header pth.h was not found.
We used the following build environment:
>> CPP="$CPP"
>> CPPFLAGS="$CPPFLAGS"
See config.log for possibly more details.])
fi
_AC_PTH_VERBOSE([ o link check])
AC_TRY_LINK(_code1, _code2, _ok=yes, _ok=no)
if test ".$_ok" != .yes; then
_AC_PTH_ERROR([dnl
Found GNU Pth $_pth_version under $_pth_location, but
was unable to perform a sanity linker check. This means
the GNU Pth library libpth.a was not found.
We used the following build environment:
>> CC="$CC"
>> CFLAGS="$CFLAGS"
>> LDFLAGS="$LDFLAGS"
>> LIBS="$LIBS"
See config.log for possibly more details.])
fi
_AC_PTH_VERBOSE([ o run-time check])
AC_TRY_RUN(_code1 _code2, _ok=`cat conftestval`, _ok=no, _ok=no)
if test ".$_ok" != .yes; then
if test ".$_ok" = .no; then
_AC_PTH_ERROR([dnl
Found GNU Pth $_pth_version under $_pth_location, but
was unable to perform a sanity execution check. This usually
means that the GNU Pth shared library libpth.so is present
but \$LD_LIBRARY_PATH is incomplete to execute a Pth test.
In this case either disable this test via --without-pth-test,
or extend \$LD_LIBRARY_PATH, or build GNU Pth as a static
library only via its --disable-shared Autoconf option.
We used the following build environment:
>> CC="$CC"
>> CFLAGS="$CFLAGS"
>> LDFLAGS="$LDFLAGS"
>> LIBS="$LIBS"
See config.log for possibly more details.])
else
_AC_PTH_ERROR([dnl
Found GNU Pth $_pth_version under $_pth_location, but
was unable to perform a sanity run-time check. This usually
means that the GNU Pth library failed to work and possibly
caused a core dump in the test program. In this case it
is strongly recommended that you re-install GNU Pth and this
time make sure that it really passes its "make test" procedure.
We used the following build environment:
>> CC="$CC"
>> CFLAGS="$CFLAGS"
>> LDFLAGS="$LDFLAGS"
>> LIBS="$LIBS"
See config.log for possibly more details.])
fi
fi
_extendvars="ifelse([$4],,yes,$4)"
if test ".$_extendvars" != .yes; then
CPPFLAGS="$_ac_save_CPPFLAGS"
CFLAGS="$_ac_save_CFLAGS"
LDFLAGS="$_ac_save_LDFLAGS"
LIBS="$_ac_save_LIBS"
fi
else
_extendvars="ifelse([$4],,yes,$4)"
if test ".$_extendvars" = .yes; then
if test ".$_pth_subdir" = .yes; then
CPPFLAGS="$CPPFLAGS $_pth_cppflags"
CFLAGS="$CFLAGS $_pth_cflags"
LDFLAGS="$LDFLAGS $_pth_ldflags"
LIBS="$LIBS $_pth_libs"
fi
fi
fi
PTH_CPPFLAGS="$_pth_cppflags"
PTH_CFLAGS="$_pth_cflags"
PTH_LDFLAGS="$_pth_ldflags"
PTH_LIBS="$_pth_libs"
AC_SUBST(PTH_CPPFLAGS)
AC_SUBST(PTH_CFLAGS)
AC_SUBST(PTH_LDFLAGS)
AC_SUBST(PTH_LIBS)
_AC_PTH_VERBOSE([+ Final Results:])
_AC_PTH_VERBOSE([ o PTH_CPPFLAGS=\"$PTH_CPPFLAGS\"])
_AC_PTH_VERBOSE([ o PTH_CFLAGS=\"$PTH_CFLAGS\"])
_AC_PTH_VERBOSE([ o PTH_LDFLAGS=\"$PTH_LDFLAGS\"])
_AC_PTH_VERBOSE([ o PTH_LIBS=\"$PTH_LIBS\"])
fi
if test ".$with_pth" != .no; then
AC_MSG_RESULT([version $_pth_version, $_pth_type under $_pth_location])
ifelse([$5], , :, [$5])
else
AC_MSG_RESULT([no])
ifelse([$6], , :, [$6])
fi
])
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