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Use append_cflags instead of modifying CFLAGS directly - #42
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This fixes a compilation issue in GCC 15 due `stdbool.h` not being included when `-std=c99` is in use. This occurs because the standard `configure` script shipped with older Ruby versions (prior to 3.4.5 and 3.3.9) do not properly test for `stdbool.h` on C23 compilers (https://bugs.ruby-lang.org/issues/21340). The `append_cflags` approach is recommended over modifying CFLAGS since it ensures compatibility across different build environments by checking whether the flag is acceptable. Similar changes: * socketry/io-event#137 * mongodb/bson-ruby#355
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This fixes a compilation issue in GCC 15 due
stdbool.hnot being included when-std=c99is in use. This occurs because the standardconfigurescript shipped with older Ruby versions (prior to 3.4.5 and 3.3.9) do not properly test forstdbool.hon C23 compilers (https://bugs.ruby-lang.org/issues/21340).The
append_cflagsapproach is recommended over modifying CFLAGS since it ensures compatibility across different build environments by checking whether the flag is acceptable.Similar changes: