dnl
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dnl
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dnl $Id: prog-cxx.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
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dnl $Id: prog-cxx.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
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dnl
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dnl
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dnl Check for target g++
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dnl Check for target g++
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dnl
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dnl
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dnl 98/05/20 Ralf Corsepius (corsepiu@faw.uni-ulm.de)
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dnl 98/05/20 Ralf Corsepius (corsepiu@faw.uni-ulm.de)
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dnl Completely reworked
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dnl Completely reworked
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AC_DEFUN(RTEMS_PROG_CXX,
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AC_DEFUN(RTEMS_PROG_CXX,
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[
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[
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AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
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AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
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AC_BEFORE([$0], [AC_PROG_CXX])dnl
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AC_BEFORE([$0], [AC_PROG_CXX])dnl
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AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl
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AC_BEFORE([$0], [RTEMS_CANONICALIZE_TOOLS])dnl
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AC_REQUIRE([RTEMS_TOOL_PREFIX])dnl
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AC_REQUIRE([RTEMS_TOOL_PREFIX])dnl
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AC_REQUIRE([RTEMS_ENABLE_LIBCDIR])dnl
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AC_REQUIRE([RTEMS_ENABLE_LIBCDIR])dnl
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dnl Only accept g++ and c++
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dnl Only accept g++ and c++
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dnl NOTE: This might be too restrictive for native compilation
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dnl NOTE: This might be too restrictive for native compilation
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AC_PATH_PROGS(CXX_FOR_TARGET, "$program_prefix"g++ "$program_prefix"c++)
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AC_PATH_PROGS(CXX_FOR_TARGET, "$program_prefix"g++ "$program_prefix"c++)
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test -z "$CXX_FOR_TARGET" \
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test -z "$CXX_FOR_TARGET" \
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&& AC_MSG_ERROR([no acceptable c++ found in \$PATH])
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&& AC_MSG_ERROR([no acceptable c++ found in \$PATH])
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|
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dnl backup
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dnl backup
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rtems_save_CXX=$CXX
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rtems_save_CXX=$CXX
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rtems_save_CXXFLAGS=$CXXFLAGS
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rtems_save_CXXFLAGS=$CXXFLAGS
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dnl temporarily set CXX
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dnl temporarily set CXX
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CXX=$CXX_FOR_TARGET
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CXX=$CXX_FOR_TARGET
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AC_PROG_CXX_WORKS
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AC_PROG_CXX_WORKS
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AC_PROG_CXX_GNU
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AC_PROG_CXX_GNU
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if test $ac_cv_prog_gxx = yes; then
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if test $ac_cv_prog_gxx = yes; then
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GXX=yes
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GXX=yes
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dnl Check whether -g works, even if CXXFLAGS is set, in case the package
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dnl Check whether -g works, even if CXXFLAGS is set, in case the package
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dnl plays around with CXXFLAGS (such as to build both debugging and
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dnl plays around with CXXFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_save_CXXFLAGS="$CXXFLAGS"
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ac_save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS=
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CXXFLAGS=
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AC_PROG_CXX_G
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AC_PROG_CXX_G
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if test "$ac_test_CXXFLAGS" = set; then
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if test "$ac_test_CXXFLAGS" = set; then
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CXXFLAGS="$ac_save_CXXFLAGS"
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CXXFLAGS="$ac_save_CXXFLAGS"
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elif test $ac_cv_prog_cxx_g = yes; then
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elif test $ac_cv_prog_cxx_g = yes; then
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CXXFLAGS="-g -O2"
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CXXFLAGS="-g -O2"
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else
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else
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CXXFLAGS="-O2"
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CXXFLAGS="-O2"
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fi
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fi
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else
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else
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GXX=
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GXX=
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test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
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test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
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fi
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fi
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|
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rtems_cv_prog_gxx=$ac_cv_prog_gxx
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rtems_cv_prog_gxx=$ac_cv_prog_gxx
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rtems_cv_prog_cxx_g=$ac_cv_prog_cxx_g
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rtems_cv_prog_cxx_g=$ac_cv_prog_cxx_g
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rtems_cv_prog_cxx_works=$ac_cv_prog_cxx_works
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rtems_cv_prog_cxx_works=$ac_cv_prog_cxx_works
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rtems_cv_prog_cxx_cross=$ac_cv_prog_cxx_cross
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rtems_cv_prog_cxx_cross=$ac_cv_prog_cxx_cross
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|
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CXX=$rtems_save_CXX
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CXX=$rtems_save_CXX
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CXXFLAGS=$rtems_save_CXXFLAGS
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CXXFLAGS=$rtems_save_CXXFLAGS
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dnl restore initial values
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dnl restore initial values
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unset ac_cv_prog_gxx
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unset ac_cv_prog_gxx
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unset ac_cv_prog_cc_g
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unset ac_cv_prog_cc_g
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unset ac_cv_prog_cxx_works
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unset ac_cv_prog_cxx_works
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unset ac_cv_prog_cxx_cross
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unset ac_cv_prog_cxx_cross
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dnl somehow autoconf macros leave this file
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dnl somehow autoconf macros leave this file
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rm -f conftest.C
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rm -f conftest.C
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])
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])
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|
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AC_DEFUN(RTEMS_PROG_CXX_FOR_TARGET,
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AC_DEFUN(RTEMS_PROG_CXX_FOR_TARGET,
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[
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[
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RTEMS_PROG_CXX
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RTEMS_PROG_CXX
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if test "$rtems_cv_prog_cc_cross" != "$rtems_cv_prog_cxx_cross"; then
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if test "$rtems_cv_prog_cc_cross" != "$rtems_cv_prog_cxx_cross"; then
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AC_MSG_ERROR([***]
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AC_MSG_ERROR([***]
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[Inconsistency in compiler configuration:]
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[Inconsistency in compiler configuration:]
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[Target C compiler and Target C++ compiler]
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[Target C compiler and Target C++ compiler]
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[must both either be cross compilers or native compilers]
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[must both either be cross compilers or native compilers]
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[Hint: If building a posix bsp: LD_LIBRARY_PATH?] )
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[Hint: If building a posix bsp: LD_LIBRARY_PATH?] )
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fi
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fi
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])
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])
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|
