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-- make.conf.example |
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++ make.conf.example |
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# Example: |
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# Example: |
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#USE="X gtk gnome -alsa" |
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#USE="X gtk gnome -alsa" |
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# Host Setting |
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# =========== |
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# |
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# All RV64 systems should use this host setting: |
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CHOST="riscv64-unknown-linux-gnu" |
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# whereas all RV32 ones should use: |
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#CHOST="riscv-unknown-linux-gnu" |
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# Host and optimization settings |
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# Host and optimization settings |
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# ============================== |
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# ============================== |
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# |
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# |
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# -frecord-gcc-switches, since otherwise the check could result in false |
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# -frecord-gcc-switches, since otherwise the check could result in false |
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# positive results. |
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# positive results. |
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# |
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# |
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# Please refer to the GCC manual for a list of possible values. |
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# -mcpu=<cpu-type> tells the compiler to take full advantage of the ABI and |
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# instructions available on a certain CPU. This will produce code which may |
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# not run on other RISC-V CPUs, even if they support the same ISA. |
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# |
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# -mtune=<cpu-type-or-series> results in code optimised for a specific CPU |
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# (e.g. SiFive U74) or family (e.g. the SiFive 7 series) without breaking |
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# compatibility with other RISC-V CPUs supporting the same ISA. |
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# |
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# -march=<isa-string> specifies the exact ISA for which to generate code. |
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# This is normally not needed if you set -mcpu but might be useful for CPUs |
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# not explicitly supported by gcc yet. Should that be the case and you aren't |
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# sure what ISA string to use, the output of /proc/cpuinfo might give you a hint. |
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# |
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# -mabi=<abi-string> specifies the integer and floating-point calling convention |
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# to use. Again, this is normally not needed if you set -mcpu. Care should be |
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# taken while setting both -march and -mabi, as some calling conventions are |
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# impossible to implement on some ISAs. |
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# |
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# Please refer to the section "RISC-V Options" of the GCC manual for a list |
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# of possible ABI, architecture, CPU and feature values. |
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# |
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# Decent examples: |
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# |
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# |
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#CFLAGS="-O2 -pipe" |
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#CFLAGS="-mcpu=sifive-u74 -O2 -pipe" |
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#CFLAGS="-mtune=sifive-7-series -O2 -pipe" |
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# |
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# |
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# If you set a CFLAGS above, then this line will set your default C++ flags to |
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# If you set a CFLAGS above, then this line will set your default C++ flags to |
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# the same settings. |
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# the same settings. |
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# DO NOT PUT ANYTHING BUT YOUR SPECIFIC ~ARCHITECTURE IN THE LIST. |
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# DO NOT PUT ANYTHING BUT YOUR SPECIFIC ~ARCHITECTURE IN THE LIST. |
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# IF YOU ARE UNSURE OF YOUR ARCH, OR THE IMPLICATIONS, DO NOT MODIFY THIS. |
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# IF YOU ARE UNSURE OF YOUR ARCH, OR THE IMPLICATIONS, DO NOT MODIFY THIS. |
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# |
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# |
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#ACCEPT_KEYWORDS="~arch" |
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#ACCEPT_KEYWORDS="~riscv" |
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# ACCEPT_LICENSE is used to mask packages based on licensing restrictions. |
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# ACCEPT_LICENSE is used to mask packages based on licensing restrictions. |
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# It may contain both license and group names, where group names are |
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# It may contain both license and group names, where group names are |
