Fully end to end encrypted anonymous chat program. Server only stores public key lookup for users and the encrypted messages. No credentials are transfered to the server, but kept in local browser storage. This allows 100% safe chatting. https://safechat.ch
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## @id $Id$
## 1 2 3 4 5 6 7 8
## 45678901234567890123456789012345678901234567890123456789012345678901234567890
# m4_esyscmd_s does not exist on centos 5 and 6
m4_define([mrw_esyscmd_s], [m4_normalize(m4_esyscmd([$1]))])
# define least version number from subversion's revision number:
# it is taken modulo 256 due to a bug on Apple's MacOSX
m4_define(x_least, mrw_esyscmd_s([
SVN_REVISION="ERROR-UNDEFINED-REVISION-to-be-built-in-subdirectory-of-svn-checkout"
for path in . .. ../..; do
if svn info $path 2>&1 > /dev/null; then
SVN_REVISION=$(LANG= svn info $path | sed -n 's/Last Changed Rev: //p')
break;
fi
done
# Mac does not support LEAST > 255
echo $ECHO_N $(($SVN_REVISION%256))
]))
# define version number from subversion's revision number:
# it is taken modulo 256 due to a bug on Apple's MacOSX
# add to x_minor if revision number is > 256
m4_define(x_minor_diff, mrw_esyscmd_s([
SVN_REVISION="ERROR-UNDEFINED-REVISION-to-be-built-in-subdirectory-of-svn-checkout"
for path in . .. ../..; do
if svn info $path 2>&1 > /dev/null; then
SVN_REVISION=$(LANG= svn info $path | sed -n 's/Last Changed Rev: //p')
break;
fi;
done
# Mac does not support LEAST > 255
echo $ECHO_N $(($SVN_REVISION/256))
]))
# setup version number
m4_define(x_version, [x_major.m4_eval(x_minor+x_minor_diff).x_least])
## bugreport mail address is taken from <user@host> in first line of AUTHORS
m4_define(x_bugreport, mrw_esyscmd_s([
head -1 AUTHORS | \
sed -n 's,.*<\([-_.a-z0-9A-Z]*@[-_.a-z0-9A-Z]*\)>.*,\1,gp'
]))
m4_include(ax_check_qt.m4)
AC_ALIAS([AC_DEFINE_DIR], [AX_DEFINE_DIR])
AC_DEFUN([AX_DEFINE_DIR], [
prefix_NONE=
exec_prefix_NONE=
test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn
dnl refers to ${prefix}. Thus we have to use `eval' twice.
eval ax_define_dir="\"[$]$2\""
eval ax_define_dir="\"$ax_define_dir\""
AC_SUBST($1, "$ax_define_dir")
AC_DEFINE_UNQUOTED($1, "$ax_define_dir", [$3])
test "$prefix_NONE" && prefix=NONE
test "$exec_prefix_NONE" && exec_prefix=NONE
])
# add target dependencies to an existing makefile.in
# - parameters:
# $1 = existing target
# $2 = new dependency for that target
# $3 = filename of makefile.in
AC_DEFUN([AX_ADD_MAKEFILE_TARGET_DEP], [
sh_add_makefile_target_dep() {
sed -i -e ':a;/^'${1}':.*\\$/{N;s/\\\n//;ta};s/^'${1}':.*$/& '${2}'/' "${srcdir}/${3}"
if ! egrep -q "${1}:.* ${2}" "${srcdir}/${3}"; then
echo "${1}: ${2}" >> "${srcdir}/${3}"
fi
}
sh_add_makefile_target_dep "$1" "$2" "$3"
if test "$1" != ".PHONY"; then
sh_add_makefile_target_dep ".PHONY" "$2" "$3"
fi
])
# Same as AC_SUBST, but adds -Dname="value" option to CPPFLAGS
# - parameters:
# $1 = variable name
AC_DEFUN([AX_SUBST], [
AC_SUBST([$1])
tmp_var=$(echo "${$1}" | awk 1 ORS='\\n' | sed 's,\\n$,,')
tmp_var=${tmp_var//\"/\\\"}
tmp_var=${tmp_var//\'/\'\"\'\"\'}
tmp_var=${tmp_var//#/\\#}
AM_CPPFLAGS+=" '-D$1=\"${tmp_var}\"'"
AC_SUBST(AM_CPPFLAGS)
])
# must be called on the right position in configure.ac
#
# configure.ac must start with:
#
# m4_define(x_package_name, YOUR_PACKAGE_NAME) # project's name
# m4_define(x_major, MAJOR_NUMBER) # project's major version
# m4_define(x_minor, MINOR_NUMBER) # project's minor version
# m4_include(ax_init_standard_project.m4)
# AC_INIT(x_package_name, x_version, x_bugreport, x_package_name)
# AM_INIT_AUTOMAKE([1.9 tar-pax])
# AX_INIT_STANDARD_PROJECT
#
# you change nothing but: YOUR_PACKAGE_NAME, MAJOR_NUMBER, MINOR_NUMBER
#
# configures the basic environment
AC_DEFUN([AX_INIT_STANDARD_PROJECT], [
MINGW=no
MAC=no
case $host in
*mingw*) MINGW=yes;;
*darwin* | *rhapsody* | *macosx*) MAC=yes;;
esac
AM_CONDITIONAL(MINGW, test "$MINGW" = "yes")
AM_CONDITIONAL(MAC, test "$MAC" = "yes")
AM_CPPFLAGS+=" '-DMAKE_STRING(X)=\#X' '-DNAMESPACE=${PACKAGE_TARNAME//[^a-zA-Z0-9]/_}'"
AX_SUBST(NUMBERS)
AX_SUBST(HOME)
README=$(tail -n +3 README)
AX_SUBST(README)
_AM_SUBST_NOTMAKE([README])
DESCRIPTION=$(head -1 README)
AX_SUBST(DESCRIPTION)
_AM_SUBST_NOTMAKE([DESCRIPTION])
AUTHOR=$(head -1 AUTHORS)
AX_SUBST(AUTHOR)
_AM_SUBST_NOTMAKE([AUTHOR])
DISTRO=$(lsb_release -sc)
AX_SUBST(DISTRO)
BUILD_NUMBER=${BUILD_NUMBER:-1}
AX_SUBST(BUILD_NUMBER)
BUILD_DATE=$(LANG= date +"%a, %d %b %Y %H:%M:%S %z")
AX_SUBST(BUILD_DATE)
if test -f "${PROJECT_NAME}-logo.png"; then
PROJECT_LOGO="${PROJECT_NAME}-logo.png"
fi
AX_SUBST(PROJECT_LOGO)
if test -f "${PROJECT_NAME}-icon.png"; then
PROJECT_ICON="${PROJECT_NAME}-icon.png"
fi
AX_SUBST(PROJECT_ICON)
AC_ARG_ENABLE(pedantic,
[AS_HELP_STRING([--enable-pedantic],
[enable all warnings and checks, abort on warnings])],
[have_pedantic="$enableval"; test "$enableval" = "yes" && \
AM_CXXFLAGS="${AM_CXXFLAGS:-} -pedantic-errors -Wall -W -Wfloat-equal -Wundef -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Wmissing-format-attribute -Wno-multichar -Wpacked -Wredundant-decls -Werror -Wshadow -Wcast-qual -Wno-ctor-dtor-privacy"])
dnl problem in libs: -Wshadow -Wcast-qual
dnl auto.hpp: -Wno-ctor-dtor-privacy (removed)
AM_CONDITIONAL(PEDANTIC, test "$enableval" = "yes")
if test "$have_pedantic" == "yes"; then
AC_MSG_NOTICE([Pedantic compile mode enabled!
- all warnings for GNU g++ are enabled
- all warnings result in an error
- doxygen warnings are treated as error too]); fi
AC_CONFIG_FILES([makefile])
AX_ADD_MAKEFILE_TARGET_DEP([clean-am], [clean-standard-project-targets], [makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([distclean-am], [distclean-standard-project-targets], [makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-standard-project-targets], [makefile.in])
test -f makefile.in && sed -i '1iEXTRA_DIST = ' makefile.in
test -f makefile.in && cat >> makefile.in <<EOF
#### Begin: Appended by $0
EXTRA_DIST += bootstrap.sh
clean-standard-project-targets:
-rm -rf \${PACKAGE_NAME}-\${PACKAGE_VERSION}
-rm \${PACKAGE_TARNAME}-\${PACKAGE_VERSION}.tar.gz
distclean-standard-project-targets:
-rm -r autom4te.cache
-rm aclocal.m4 config.guess config.sub configure depcomp compile install-sh ltmain.sh makefile missing mkinstalldirs
maintainer-clean-standard-project-targets:
-rm makefile.in
#### End: $0
EOF
])
# use this in configure.ac to support C++
AC_DEFUN([AX_USE_CXX], [
m4_include(ax_cxx_compile_stdcxx_11.m4)
AC_LANG(C++)
AX_CXX_COMPILE_STDCXX_11(noext, optional)
AC_PROG_CXX
AC_PROG_CPP
AC_CONFIG_FILES([src/makefile])
AM_CPPFLAGS+=' -I ${top_srcdir}/src -I ${top_builddir}/src -I ${srcdir} -I ${builddir}'
AM_LDFLAGS+=' -L ${top_srcdir}/src -L ${top_builddir}/src'
# Get rid of those stupid -g -O2 options!
CXXFLAGS="${CXXFLAGS//-g -O2/}"
CFLAGS="${CFLAGS//-g -O2/}"
# pass compile flags to make distcheck
AM_DISTCHECK_CONFIGURE_FLAGS="CXXFLAGS='${CXXFLAGS}' CPPFLAGS='${CPPFLAGS}' CFLAGS='${CFLAGS}' LDFLAGS='${LDFLAGS}'"
AC_SUBST(AM_DISTCHECK_CONFIGURE_FLAGS)
AC_SUBST(AM_CXXFLAGS)
AC_SUBST(AM_CPPFLAGS)
AC_SUBST(AM_LDFLAGS)
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-cxx-targets], [src/makefile.in])
test -f src/makefile.in && cat >> src/makefile.in <<EOF
#### Begin: Appended by $0
%.app: %
-rm -r [\$][@]
\$(MAKE) DESTDIR=[\$][\$](pwd)/[\$][@]/tmp install
QTDIR="\${QTDIR}" \
QT_PLUGINS="\${QT_PLUGINS}" \
QT_PLUGIN_PATH="\${QT_PLUGIN_PATH}" \
\${top_builddir}/mac-create-app-bundle.sh \
[\$][@] [\$][<] [\$][\$](pwd)/[\$][@]/tmp\${prefix}
maintainer-clean-cxx-targets:
-rm makefile.in
#### End: $0
EOF
])
# use this in configure.ac to support CppUnit for C++ unit tests
AC_DEFUN([AX_USE_CPPUNIT], [
AM_PATH_CPPUNIT([1.0.0], [have_cppunit="yes"], [have_cppunit="no"])
# infos and warnings
if test "$have_cppunit" = "no"; then
AC_MSG_WARN([Missing cppunit development library!
- you cannot check the library using "make check"
- everything else works perfectly]); fi
AC_CONFIG_FILES([test/makefile])
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-test-targets], [test/makefile.in])
test -f test/makefile.in && cat >> test/makefile.in <<EOF
#### Begin: Appended by $0
maintainer-clean-test-targets:
-rm makefile.in
#### End: $0
EOF
])
# use this in configure.ac to support C++ examples
AC_DEFUN([AX_BUILD_EXAMPLES], [
AC_CONFIG_FILES([examples/makefile])
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-example-targets], [examples/makefile.in])
test -f examples/makefile.in && cat >> examples/makefile.in <<EOF
#### Begin: Appended by $0
maintainer-clean-example-targets:
-rm makefile.in
#### End: $0
EOF
])
# use this in configure.ac to support HTML data for webservers
AC_DEFUN([AX_BUILD_HTML], [
AC_CONFIG_FILES([html/makefile])
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-html-targets], [html/makefile.in])
test -f html/makefile.in && cat >> html/makefile.in <<EOF
#### Begin: Appended by $0
maintainer-clean-html-targets:
-rm makefile.in
#### End: $0
EOF
])
# use this in configure.ac to support C++ libraries
AC_DEFUN([AX_USE_LIBTOOL], [
# libtool versioning
LIB_MAJOR=m4_eval(x_major+x_minor+x_minor_diff)
LIB_MINOR=x_least
LIB_LEAST=m4_eval(x_minor+x_minor_diff)
LIB_VERSION="${LIB_MAJOR}:${LIB_MINOR}:${LIB_LEAST}"
AM_LDFLAGS="-version-info ${LIB_VERSION}"
AC_SUBST(AM_LDFLAGS)
AC_SUBST(LIB_VERSION)
AC_PROG_LIBTOOL
AC_CONFIG_FILES([src/${PACKAGE_NAME}.pc])
AX_ADD_MAKEFILE_TARGET_DEP([install-data-am], [install-data-libtool-pkg], [src/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([uninstall-am], [uninstall-data-am], [src/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([uninstall-data-am], [uninstall-data-libtool-pkg], [src/makefile.in])
test -f src/makefile.in && cat >> src/makefile.in <<EOF
#### Begin: Appended by $0
install-data-libtool-pkg:
test -d \$(DESTDIR)\${libdir}/pkgconfig || mkdir -p \$(DESTDIR)\${libdir}/pkgconfig
chmod -R u+w \$(DESTDIR)\${libdir}/pkgconfig
cp \${PACKAGE_NAME}.pc \$(DESTDIR)\${libdir}/pkgconfig/
uninstall-data-libtool-pkg:
-chmod -R u+w \$(DESTDIR)\${libdir}/pkgconfig
-rm -f \$(DESTDIR)\${libdir}/pkgconfig/\${PACKAGE_NAME}.pc
#### End: $0
EOF
])
# use this in configure.ac to support debian packages
AC_DEFUN([AX_USE_DEBIAN_PACKAGING], [
README_DEB=$(tail -n +3 README | sed -e 's/^$/./g' -e 's/^/ /g')
AC_SUBST(README_DEB)
_AM_SUBST_NOTMAKE([README_DEB])
AC_CONFIG_FILES([debian/changelog debian/control])
AX_ADD_MAKEFILE_TARGET_DEP([clean-am], [clean-debian-targets], [makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([distclean-am], [distclean-debian-targets], [makefile.in])
test -f makefile.in && cat >> makefile.in <<EOF
#### Begin: Appended by $0
EXTRA_DIST += debian
clean-debian-targets:
-rm -rf \${PACKAGE_NAME}_\${PACKAGE_VERSION}~\${DISTRO}.\${BUILD_NUMBER}.{dsc,tar.gz} \${PACKAGE_NAME}_\${PACKAGE_VERSION}~\${DISTRO}.\${BUILD_NUMBER}*.changes \$\$(sed -n 's,Package: \(.*\),\1_${PACKAGE_VERSION}~${DISTRO}.${BUILD_NUMBER}*.deb,p;' debian/control)
deb: distdir
cd \${PACKAGE_NAME}-\${PACKAGE_VERSION} && ( export CFLAGS="\${CFLAGS}"; export CPPFLAGS="\${CPPFLAGS}"; export CXXFLAGS="\${CXXFLAGS}"; export LDFLAGS="\${LDFLAGS}"; export DEB_CFLAGS_APPEND="\${CFLAGS}"; export DEB_CPPFLAGS_APPEND="\${CPPFLAGS}"; export DEB_CXXFLAGS_APPEND="\${CXXFLAGS}"; export DEB_LDFLAGS_APPEND="\${LDFLAGS}"; dpkg-buildpackage )
distclean-debian-targets:
-rm debian/changelog debian/control
#### End: $0
EOF
])
# use this in configure.ac to support RPM packages
AC_DEFUN([AX_USE_RPM_PACKAGING], [
AC_CONFIG_FILES([${PACKAGE_NAME}.spec])
#AX_ADD_MAKEFILE_TARGET_DEP([clean-am], [clean-rpm-targets], [makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([distclean-am], [distclean-rpm-targets], [makefile.in])
test -f makefile.in && cat >> makefile.in <<EOF
#### Begin: Appended by $0
EXTRA_DIST += \${PACKAGE_NAME}.spec.in
rpm: dist
rpmbuild -ba --define "_topdir \$\$(pwd)" --define "_sourcedir \$\$(pwd)" \${PACKAGE_NAME}.spec
distclean-rpm-targets:
-rm \${PACKAGE_NAME}.spec
#### End: $0
EOF
])
# use this in configure.ac to support scripts, e.g. bash scripts
AC_DEFUN([AX_USE_SCRIPTS], [
AC_CONFIG_FILES([scripts/makefile])
])
# use this in configure.ac to support Doxygen documentation generation
AC_DEFUN([AX_USE_DOXYGEN], [
AC_CHECK_PROG(have_doxygen, doxygen, yes, no)
AC_CHECK_PROG(have_dot, dot, yes, no)
AC_CHECK_PROG(have_mscgen, mscgen, yes, no)
PDF_DOC=${PACKAGE_NAME}-${PACKAGE_VERSION}.pdf
AC_SUBST(PDF_DOC)
if test "$have_doxygen" = "no"; then
AC_MSG_WARN([Missing program doxygen!
- you cannot rebuild the documentation
- there are precompiled derived files in the distribution]); fi
if test "$have_dot" = "no"; then
AC_MSG_WARN([Missing program dot!
- when you rebild documentation, there are no generated images
- there are precompiled derived files in the distribution]); fi
if test "$have_mscgen" = "no"; then
AC_MSG_WARN([Missing program mscgen!
- when you rebild documentation, there are no message state charts
- there are precompiled derived files in the distribution]); fi
AC_CONFIG_FILES([doc/makefile doc/doxyfile])
AX_ADD_MAKEFILE_TARGET_DEP([clean-am], [clean-documentation], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([distclean-am], [distclean-documentation], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([maintainer-clean-am], [maintainer-clean-documentation], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([install-data-am], [install-data-documentation], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([uninstall-am], [uninstall-documentation], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([all], [doc], [doc/makefile.in])
AX_ADD_MAKEFILE_TARGET_DEP([.PHONY], [pdf], [doc/makefile.in])
test -f doc/makefile.in && cat >> doc/makefile.in <<EOF
#### Begin: Appended by $0
doc: doxyfile
doxygen doxyfile
@PEDANTIC_TRUE@ test \! -s doxygen.errors
clean-documentation:
-rm doxygen.errors @PDF_DOC@
distclean-documentation:
-rm -r html
-rm @PACKAGE_NAME@.doxytag
maintainer-clean-documentation:
-rm makefile.in
install-data-documentation:
test -d \$(DESTDIR)\${docdir} || mkdir -p \$(DESTDIR)\${docdir}
chmod -R u+w \$(DESTDIR)\${docdir}
cp -r html \$(DESTDIR)\${docdir}/
uninstall-documentation:
-chmod -R u+w \$(DESTDIR)\${docdir}
-rm -rf \$(DESTDIR)\${docdir}/html
#### End: $0
EOF
])
# require a specific package, with fallback: test for a header
# - parameter:
# $1 = unique id (no special characters)
# $2 = module name (optional, if different from id)
# $3 = a header file to find (optional)
# $4 = alternative module names (space separated, optional)
#
# uses PKG_CHECK_MODULES to test for a module
# then, if given, looks for the header file
# if header file is not found, searches in alternative modules
# sets all flags, so that the module can be used everywhere
# fails if not found
AC_DEFUN([AX_PKG_REQUIRE], [
PKG_PROG_PKG_CONFIG
$1_found=no
secondpar="m4_default([$2], [$1])"
PKG_CHECK_MODULES([$1], [m4_default([$2], [$1])], [
$1_found=$secondpar
PKG_REQUIREMENTS+=" $secondpar"
], [
if test -n "$4"; then
AC_MSG_WARN([Recommended package $secondpar for feature $1 not installed, trying $4])
for pkg in $4; do
PKG_CHECK_MODULES([$1], [$pkg], [
PKG_REQUIREMENTS+=" $pkg"
$1_found=$pkg
break;
], [
AC_MSG_WARN([Recommended package $pkg for feature $1 not installed])
])
done
fi
])
AC_SUBST(CPPFLAGS)
AC_SUBST(CXXFLAGS)
AC_SUBST(PKG_REQUIREMENTS)
if test -n "$3"; then
if test "${$1_found}" = "no"; then
tmp_package="yes"
else
tmp_package=${$1_found}
fi
$1_found=no
old_CPPFLAGS=${CPPFLAGS}
CPPFLAGS=" ${$1_CFLAGS} ${CPPFLAGS}"
AC_CHECK_HEADER([$3], [
$1_found=${tmp_package}
], [
for x in ${$1_CFLAGS}; do
AC_MSG_NOTICE([search for $3 in ${x[#]-I}])
for f in $(find ${x[#]-I} -name "$3" 2> /dev/null); do
if test -f "$f"; then
$1_found=${tmp_package}
$1_CFLAGS+=" -I${f%/*}"
AC_MSG_NOTICE([added path ${f%/*}])
break;
fi
done
if test "${$1_found}" != "no"; then
break;
fi
done
if test "${$1_found}" = "no"; then
tmp_includedir=$(${PKG_CONFIG} --variable=includedir $tmp_package)
for x in ${tmp_includedir}; do
AC_MSG_NOTICE([search for $3 in $x])
for f in $(find ${x} -name "$3" 2> /dev/null); do
if test -f "$f"; then
$1_found=${tmp_package}
$1_CFLAGS+=" -I${f%/*}"
AC_MSG_NOTICE([added path ${f%/*}])
break;
fi
done
if test "${$1_found}" != "no"; then
break;
fi
done
fi
])
CPPFLAGS=${old_CPPFLAGS}
fi
if test "${$1_found}" = "no"; then
if test -n "$3"; then
if test -n "$4"; then
AC_MSG_ERROR([Feature $1 not found, need header $3 in modules $secondpar or $4])
else
AC_MSG_ERROR([Feature $1 not found, need header $3 in module $secondpar])
fi
else
AC_MSG_ERROR([Feature $1 not found please install module $secondpar])
fi
fi
CPPFLAGS+=" ${$1_CFLAGS}"
CXXFLAGS+=" ${$1_CFLAGS}"
LIBS+=" ${$1_LIBS}"
])
# check if a specific package exists
# - parameter:
# $1 = unique id (no special characters)
# $2 = module name (optional, if different from id)
#
# uses PKG_CHECK_MODULES to test for a module
# sets automake conditional HAVE_$1 to 0 (not found) or 1 (found)
# sets all flags, so that the module can be used everywhere
AC_DEFUN([AX_PKG_CHECK], [
PKG_PROG_PKG_CONFIG
PKG_CHECK_MODULES([$1], [m4_default([$2], [$1])], [
HAVE_$1=1
CPPFLAGS+=" ${$1_CFLAGS}"
CXXFLAGS+=" ${$1_CFLAGS}"
LIBS+=" ${$1_LIBS}"
if test -z "$PKG_REQUIREMENTS"; then
PKG_REQUIREMENTS="m4_default([$2], [$1])"
else
PKG_REQUIREMENTS="${PKG_REQUIREMENTS}, m4_default([$2], [$1])"
fi
], [
HAVE_$1=0
])
AM_CONDITIONAL(HAVE_$1, test $HAVE_[$1] -eq 1)
AC_SUBST(HAVE_$1)
AC_SUBST(CPPFLAGS)
AC_SUBST(CXXFLAGS)
AC_SUBST(PKG_REQUIREMENTS)
])
# make sure, a specific header exists
# - parameter:
# $1 = header name
AC_DEFUN([AX_REQUIRE_HEADER], [
AC_CHECK_HEADER($1, [], [
if test -n "$2"; then
found=0
for d in $2; do
if test -f "${d}/$1"; then
AC_MSG_NOTICE([found file ${d}/$1])
CPPFLAGS+=" -I${d}"
found=1
break;
else
AC_MSG_NOTICE([not found file ${d}/$1])
fi
done
fi
if test $found -eq 0; then
AC_MSG_ERROR([Header $1 not found])
fi
], [])
], [])
])
# Check within a list of CPP-Flags for the first that is usable and
# configure it
# - parameter:
# $1 = white-space separated list of alternative flags
# $2 = module name (optional, if different from id)
AC_DEFUN([AX_CHECK_VALID_CPP_FLAG], [
AC_MSG_CHECKING([m4_default([$2], [for valid flag in "$1"])])
save_cppflags="$CPPFLAGS"
newflag="no"
for test_flag in $1; do
CPPFLAGS+=" ${test_flag}"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
newflag="$test_flag"
CPPFLAGS="$save_cppflags"
CPPFLAGS+=" ${test_flag}"
break;
])
CPPFLAGS="$save_cppflags"
done
AC_SUBST(CPPFLAGS)
AC_MSG_RESULT([$newflag in $CPPFLAGS])
])
# Check within a list of CXX-Flags for the first that is usable and
# configure it
# - parameter:
# $1 = white-space separated list of alternative flags
# $2 = module name (optional, if different from id)
AC_DEFUN([AX_CHECK_VALID_CXX_FLAG], [
AC_MSG_CHECKING([m4_default([$2], [for valid flag in "$1"])])
save_cxxflags="$CXXFLAGS"
newflag="no"
for test_flag in $1; do
CXXFLAGS+=" ${test_flag}"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
newflag="$test_flag"
CXXFLAGS="$save_cxxflags"
CXXFLAGS+=" ${test_flag}"
break;
])
CXXFLAGS="$save_cxxflags"
done
AC_SUBST(CXXFLAGS)
AC_MSG_RESULT([$newflag in $CXXFLAGS])
])
# Check within a list of C-Flags for the first that is usable and
# configure it
# - parameter:
# $1 = white-space separated list of alternative flags
# $2 = module name (optional, if different from id)
AC_DEFUN([AX_CHECK_VALID_C_FLAG], [
AC_MSG_CHECKING([m4_default([$2], [for valid flag in "$1"])])
save_cflags="$CFLAGS"
newflag="no"
for test_flag in $1; do
CFLAGS+=" ${test_flag}"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
newflag="$test_flag"
CFLAGS="$save_cflags"
CFLAGS+=" ${test_flag}"
break;
])
CFLAGS="$save_cflags"
done
AC_SUBST(CFLAGS)
AC_MSG_RESULT([$newflag in $CFLAGS])
])
# Check within a list of LD-Flags for the first that is usable and
# configure it
# - parameter:
# $1 = white-space separated list of alternative flags
# $2 = module name (optional, if different from id)
AC_DEFUN([AX_CHECK_VALID_LD_FLAG], [
AC_MSG_CHECKING([m4_default([$2], [for valid flag in "$1"])])
save_ldflags="$LDFLAGS"
newflag="no"
for test_flag in $1; do
LDFLAGS+=" ${test_flag}"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
newflag="$test_flag"
LDFLAGS="$save_ldflags"
LDFLAGS+=" ${test_flag}"
break;
])
LDFLAGS="$save_ldflags"
done
AC_SUBST(LDFLAGS)
AC_MSG_RESULT([$newflag in $LDFLAGS])
])