Compiling in alpine -

[manulera]

I got it to compile in alpine in an aarch64 machine, but not on an x86_64 machine. With some chatGPT help I managed to find the solution. I was getting the below error:

2025-07-01 11:57:59 ./seqan/file/file_page.h:76:22: error: expected '>' before numeric constant
2025-07-01 11:57:59    76 |     template <size_t PAGESIZE>
2025-07-01 11:57:59       |                      ^~~~~~~~
2025-07-01 11:57:59 ./seqan/file/file_page.h:163:55: error: expected '>' before numeric constant
2025-07-01 11:57:59   163 |     template <typename TValue, typename TFile, size_t PAGESIZE>
2025-07-01 11:57:59       |                                                       ^~~~~~~~
2025-07-01 11:57:59 ./seqan/file/file_page.h:184:55: error: expected '>' before numeric constant
2025-07-01 11:57:59   184 |     template <typename TValue, typename TFile, size_t PAGESIZE>
2025-07-01 11:57:59       |                                                       ^~~~~~~~
2025-07-01 11:58:00 ./seqan/file/file_page.h:408:27: error: expected identifier before numeric constant
2025-07-01 11:58:00   408 |         enum            { PAGESIZE = 

... very long

It has to do with the seqan file file/file_page.h, in particular:

#ifdef PAGESIZE
#undef PAGESIZE
#endif
    template <size_t PAGESIZE>

I had to insert that undef block for it to work.

I arrived to this conclusion with chatGPT, which asked me to run echo '#include <sys/param.h>' | cpp -dM | grep PAGESIZE in both machines. The aarch64 machine returned nothing, the x86_64 returned:

#define PAGESIZE 4096
#define PAGE_SIZE PAGESIZE

That got it to compile, but I don't understand much what's going on. Can a fix be added to the library so that I don't have to add this on my side?