Wondering if someone can help me with this. Mr. Adam D. Ruppe got
me 90% there, but I'm a little lost after reaching the 99% mark.
I want to use XLSX I/O to manipulate excel spreadsheets.
I've cloned, built, and installed the library. And with the help
of Adam, I am now able to import it and link to D program (as
long as I'm not using anything from the lib). Wanted to continue
the discussion with Adam, but I realize the announce forum isn't
the place to ask for help.
Anyway, the library has two dependencies:
- [expat](http://www.libexpat.org/) (only for libxlsxio_read)
- [minizip](http://www.winimage.com/zLibDll/minizip.html) or
libzip (libxlsxio_read and libxlsxio_write)
Since I'm on a Mac, I installed them using homebrew. In a demo.d
file I have the following:
```d
import xlsxio_read;
import std.stdio;
pragma(lib, "libxlsxio_read.a");
pragma(lib, "libexpat.a");
pragma(lib, "libminizip.a");
string filename = "logistic_regression.xlsx";
void main (string[] args)
{
if (args.length > 1)
filename = args[1];
xlsxioreader xlsxioread;
writef("XLSX I/O library version %s\n",
xlsxioread_get_version_string());
}
```
And in xlsxio_read.c (probably should call it something else), I
simply import the library header:
```c
#include <xlsxio_read.h>
```
When I try to compile it, I get a slew of errors about undefined
symbols. It wasn't finding libexpat and libminizip so I copied
those to my work directory and tried again. With that, most of
the errors disappeared. The remaining ones are:
```
dmd demo.d xlsxio_read.c
ld: warning: ignoring file libminizip.a, building for
macOS-x86_64 but attempting to link with file built for
macOS-x86_64
Undefined symbols for architecture x86_64:
"_unzClose", referenced from:
_xlsxioread_close in libxlsxio_read.a(xlsxio_read.c.o)
"_unzCloseCurrentFile", referenced from:
_expat_process_zip_file in libxlsxio_read.a(xlsxio_read.c.o)
_xlsxioread_sheetlist_close in
libxlsxio_read.a(xlsxio_read.c.o)
_xlsxioread_sheet_close in libxlsxio_read.a(xlsxio_read.c.o)
"_unzGetCurrentFileInfo", referenced from:
_iterate_files_by_contenttype_expat_callback_element_start
in libxlsxio_read.a(xlsxio_read.c.o)
"_unzGetGlobalInfo", referenced from:
_iterate_files_by_contenttype_expat_callback_element_start
in libxlsxio_read.a(xlsxio_read.c.o)
"_unzGoToFirstFile", referenced from:
_iterate_files_by_contenttype_expat_callback_element_start
in libxlsxio_read.a(xlsxio_read.c.o)
"_unzGoToNextFile", referenced from:
_iterate_files_by_contenttype_expat_callback_element_start
in libxlsxio_read.a(xlsxio_read.c.o)
"_unzLocateFile", referenced from:
_XML_Char_openzip in libxlsxio_read.a(xlsxio_read.c.o)
"_unzOpen", referenced from:
_xlsxioread_open in libxlsxio_read.a(xlsxio_read.c.o)
"_unzOpen2", referenced from:
_xlsxioread_open_filehandle in
libxlsxio_read.a(xlsxio_read.c.o)
_xlsxioread_open_memory in libxlsxio_read.a(xlsxio_read.c.o)
"_unzOpenCurrentFile", referenced from:
_XML_Char_openzip in libxlsxio_read.a(xlsxio_read.c.o)
"_unzReadCurrentFile", referenced from:
_expat_process_zip_file in libxlsxio_read.a(xlsxio_read.c.o)
_expat_process_zip_file_resume in
libxlsxio_read.a(xlsxio_read.c.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to
see invocation)
Error: linker exited with status 1
```
From the first line of the error message, I gather I'm using the
wrong minizip but I'm not sure how or why. What does **"building
for macOS-x86_64 but attempting to link with file built for
macOS-x86_64"** even mean?
Thanks,
confuzzled!!!
