Retro68/gcc/libphobos/m4/gcc_support.m4

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2019-06-02 15:48:37 +00:00
#
# Contains macros to allow building libphobos as part of GCC.
# This includes macros to locate directories and do configure checks
# without an installed libdruntime.
#
# PHOBOS_ABS_SRCDIR
# -----------------
# Find absolute top level source directory and set phobos_cv_abs_srcdir
AC_DEFUN([PHOBOS_ABS_SRCDIR], [
dnl Not sure if 100% portable, but we need the absolute dir as the _LT_COMPILER_C_O
dnl test changes the directory
AC_CACHE_CHECK([[for absolute libphobos source path]],
[[phobos_cv_abs_srcdir]],
[[phobos_cv_abs_srcdir=`cd $srcdir && pwd`]])
AS_IF([[test -d "$phobos_cv_abs_srcdir"]],
[],
[AC_MSG_ERROR([[can't find absolute libphobos source path]])])
])
# WITH_LOCAL_DRUNTIME(CALL, EXTRAFLAGS)
# -------------------------------------
# Execute CALL with GDCFLAGS adjusted to use the local druntime includes.
# Flags contains extra arguments to append to GDCFLAGS (e.g. -nophoboslib).
AC_DEFUN([WITH_LOCAL_DRUNTIME], [
AC_REQUIRE([PHOBOS_ABS_SRCDIR])
gdc_save_DFLAGS=$GDCFLAGS
GDCFLAGS="-fno-moduleinfo -nostdinc -I $phobos_cv_abs_srcdir/libdruntime $2 $GDCFLAGS"
$1
GDCFLAGS=$gdc_save_DFLAGS
])