[参考译文] MSP430F5529：MSP-EXP430F5529LP：如何在 MSP-EXP430F5529LP 上创建 pdf 文件并将数据写入 pdf 文件

要初步了解在   x86_64 Linux 下创建编译 github.com/.../libharu C 库的 PDF 所需的代码量。 创建的静态库的大小为：

~/libharu_build$ size -t ./src/libhpdfs.a
   text	   data	    bss	    dec	    hex	filename
  11856	    496	      0	  12352	   3040	hpdf_annotation.o (ex ./src/libhpdfs.a)
   2852	      0	      0	   2852	    b24	hpdf_array.o (ex ./src/libhpdfs.a)
    921	      0	      0	    921	    399	hpdf_binary.o (ex ./src/libhpdfs.a)
    271	      0	      0	    271	    10f	hpdf_boolean.o (ex ./src/libhpdfs.a)
   3127	    120	      0	   3247	    caf	hpdf_catalog.o (ex ./src/libhpdfs.a)
   2657	     72	      0	   2729	    aa9	hpdf_destination.o (ex ./src/libhpdfs.a)
   4468	      0	      0	   4468	   1174	hpdf_dict.o (ex ./src/libhpdfs.a)
    979	      0	      0	    979	    3d3	hpdf_doc_png.o (ex ./src/libhpdfs.a)
  19470	     48	      0	  19518	   4c3e	hpdf_doc.o (ex ./src/libhpdfs.a)
 155473	      0	      0	 155473	  25f51	hpdf_encoder_cns.o (ex ./src/libhpdfs.a)
  62544	      0	      0	  62544	   f450	hpdf_encoder_cnt.o (ex ./src/libhpdfs.a)
  67759	      0	      0	  67759	  108af	hpdf_encoder_jp.o (ex ./src/libhpdfs.a)
 117587	      0	      0	 117587	  1cb53	hpdf_encoder_kr.o (ex ./src/libhpdfs.a)
  29353	  17560	      0	  46913	   b741	hpdf_encoder.o (ex ./src/libhpdfs.a)
   7189	      0	      0	   7189	   1c15	hpdf_encrypt.o (ex ./src/libhpdfs.a)
   2085	      0	      0	   2085	    825	hpdf_encryptdict.o (ex ./src/libhpdfs.a)
    663	      0	      0	    663	    297	hpdf_error.o (ex ./src/libhpdfs.a)
   1035	     96	      0	   1131	    46b	hpdf_ext_gstate.o (ex ./src/libhpdfs.a)
  14152	      0	      0	  14152	   3748	hpdf_font_cid.o (ex ./src/libhpdfs.a)
   3998	      0	      0	   3998	    f9e	hpdf_font_tt.o (ex ./src/libhpdfs.a)
   4026	      0	      0	   4026	    fba	hpdf_font_type1.o (ex ./src/libhpdfs.a)
   1706	      0	      0	   1706	    6aa	hpdf_font.o (ex ./src/libhpdfs.a)
  26288	    720	      0	  27008	   6980	hpdf_fontdef_base14.o (ex ./src/libhpdfs.a)
   1412	      0	      0	   1412	    584	hpdf_fontdef_cid.o (ex ./src/libhpdfs.a)
   2897	      0	      0	   2897	    b51	hpdf_fontdef_cns.o (ex ./src/libhpdfs.a)
   1502	      0	      0	   1502	    5de	hpdf_fontdef_cnt.o (ex ./src/libhpdfs.a)
   9783	      0	      0	   9783	   2637	hpdf_fontdef_jp.o (ex ./src/libhpdfs.a)
   8383	      0	      0	   8383	   20bf	hpdf_fontdef_kr.o (ex ./src/libhpdfs.a)
  23782	    104	      0	  23886	   5d4e	hpdf_fontdef_tt.o (ex ./src/libhpdfs.a)
   5723	      0	      0	   5723	   165b	hpdf_fontdef_type1.o (ex ./src/libhpdfs.a)
    323	      0	      0	    323	    143	hpdf_fontdef.o (ex ./src/libhpdfs.a)
   1447	      0	      0	   1447	    5a7	hpdf_gstate.o (ex ./src/libhpdfs.a)
   8371	      0	      0	   8371	   20b3	hpdf_image_ccitt.o (ex ./src/libhpdfs.a)
   6895	      0	      0	   6895	   1aef	hpdf_image_png.o (ex ./src/libhpdfs.a)
   6754	     24	      0	   6778	   1a7a	hpdf_image.o (ex ./src/libhpdfs.a)
   1505	     88	      0	   1593	    639	hpdf_info.o (ex ./src/libhpdfs.a)
   1595	      0	      0	   1595	    63b	hpdf_list.o (ex ./src/libhpdfs.a)
   1121	      0	      0	   1121	    461	hpdf_mmgr.o (ex ./src/libhpdfs.a)
    515	      0	      0	    515	    203	hpdf_name.o (ex ./src/libhpdfs.a)
   1718	      8	      0	   1726	    6be	hpdf_namedict.o (ex ./src/libhpdfs.a)
    134	      0	      0	    134	     86	hpdf_null.o (ex ./src/libhpdfs.a)
    274	      0	      0	    274	    112	hpdf_number.o (ex ./src/libhpdfs.a)
   1237	      0	      0	   1237	    4d5	hpdf_objects.o (ex ./src/libhpdfs.a)
   2358	      0	      0	   2358	    936	hpdf_outline.o (ex ./src/libhpdfs.a)
    575	      0	      0	    575	    23f	hpdf_page_label.o (ex ./src/libhpdfs.a)
  37432	      0	      0	  37432	   9238	hpdf_page_operator.o (ex ./src/libhpdfs.a)
  21523	     40	      0	  21563	   543b	hpdf_pages.o (ex ./src/libhpdfs.a)
    423	      0	      0	    423	    1a7	hpdf_real.o (ex ./src/libhpdfs.a)
  12132	      0	      0	  12132	   2f64	hpdf_streams.o (ex ./src/libhpdfs.a)
   1911	      0	      0	   1911	    777	hpdf_string.o (ex ./src/libhpdfs.a)
  11193	     96	      0	  11289	   2c19	hpdf_u3d.o (ex ./src/libhpdfs.a)
   3396	      0	      0	   3396	    d44	hpdf_utils.o (ex ./src/libhpdfs.a)
   2929	      0	      0	   2929	    b71	hpdf_xref.o (ex ./src/libhpdfs.a)
   5005	      0	      0	   5005	   138d	hpdf_pdfa.o (ex ./src/libhpdfs.a)
   2243	      0	      0	   2243	    8c3	hpdf_3dmeasure.o (ex ./src/libhpdfs.a)
    354	      0	      0	    354	    162	hpdf_exdata.o (ex ./src/libhpdfs.a)
   1711	      0	      0	   1711	    6af	hpdf_encoder_utf.o (ex ./src/libhpdfs.a)
 729015	  19472	      0	 748487	  b6bc7	(TOTALS)

计算为 x86_64编译的库的大小并不直接指示该库在 MSP430上所需的内存量、而是给出了创建 PDF 所需库大小的粗略近似值。

上面创建的静态库 ibhpdfs.a 依赖于 libz.so.1和 libpng16.so.16动态库、这进一步增加了内存要求。 还需要为正在创建的 PDF 文档提供内存。

因此、看起来具有128KB 闪存和8KB SRAM 的 MSP430F5529没有足够的内存来创建 PDF 文档。