mkvtoolnix/ac/drmingw.m4

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AC_ARG_WITH(drmingw,
AC_HELP_STRING([--with-drmingw=path],[use link against Dr. MinGW's crash reporting library found in path]),
[ drmingw_path="$with_drmingw" ],)
USE_DRMINGW=no
if ! test -z "$drmingw_path"; then
AC_CACHE_CHECK([for Dr. MinGW], [ax_cv_drmingw_found], [
save_CFLAGS="$CFLAGS"
save_LIBS="$LIBS"
CFLAGS="$CFLAGS -I$drmingw_path/include"
LIBS="$LIBS -L$drmingw_path/lib -lexchndl"
AC_TRY_LINK(
[#include "exchndl.h"],
[ExcHndlInit();],
[ax_cv_drmingw_found=yes],
[ax_cv_drmingw_found=no])
CFLAGS="$save_CFLAGS"
LIBS="$save_LIBS"
])
if test x"$ax_cv_drmingw_found" = xyes; then
DRMINGW_PATH="$drmingw_path"
USE_DRMINGW=yes
fi
fi
AC_SUBST(DRMINGW_PATH)
AC_SUBST(USE_DRMINGW)