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| -rw-r--r-- | makefiles/Makefile.tools | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/makefiles/Makefile.tools b/makefiles/Makefile.tools index 6ac78a5..59203ec 100644 --- a/makefiles/Makefile.tools +++ b/makefiles/Makefile.tools @@ -96,6 +96,22 @@ ifeq ($(TARGET),riscos) GENHTML ?= echo LCOV ?= echo PKGCONFIG ?= + # On certain versions of RISC OS (<>4 || kernel < 8.75), + # the kernel will clean up the current redirection on + # OS_Exit, including closing the associated file handles. + # This is problematic for UnixLib, as it's invariably using + # those filehandles in a pipe between parent and child processes. + # This affects us as, anywhere where we shell out and want to + # capture the output of the child process may fail. + # Fortunately, if we know the child process is built against + # UnixLib, then we also know that it won't call OS_Exit when it + # exits, instead returning directly to our exit handler (and thus + # preserving the redirection). This only works, however, if the + # child application is specified using its absolute path, or + # found in Run$Path. In the case of Perl, it does not appear in + # Run$Path, so we must invoke it using its absolute path so that + # the SharedUnixLibrary successfully detects it as a child process. + PERL ?= <Perl$$Dir>.bin.perl # This is nasty, but needed because $(CURDIR) will # contain colons, and thus confuse make mightily |