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22 lines
1.1 KiB
Text
22 lines
1.1 KiB
Text
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This is a SlackBuild that will install ccl (Clozure Common Lisp).
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Ccl includes both 32-bit and 64-bit binaries (except ARM which is
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currently 32-bit only). Official scripts 'ccl' and 'ccl64' will be put
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on PATH, corresponding to the 32-bit and 64-bit lisp implementations
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in order. On Slackware64 with multilib installed, it's possible to
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run 32-bit ccl, using 'ccl' instead of 'ccl64'.
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Ccl uses low 16 bits of the address space for certain optimizations.
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The Linux kernel provides a feature that can prevent a process from
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mapping addresses below a certain base address to prevent exploitation
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of undiscovered null pointer dereference bugs in the kernel. To make
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ccl run on Slackware, 'mmap_min_addr' will be set to 4096. (see
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/etc/sysctl.d/ccl.conf)
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The 4K value will protect against certain (yet-to-be-discovered) NULL
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pointer deference bugs in the kernel, but will still allow
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applications to use low-memory addresses. For details see
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http://trac.clozure.com/ccl/wiki/PlatformNotes
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To make ccl usable before a reboot, execute the command below;
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# /sbin/sysctl vm.mmap_min_addr=4096
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