Compilation errors

Probably a component is missing,
Revision 5201
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/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:23:18: erreur: fitz.h : Aucun fichier ou dossier de ce type
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:24:19: erreur: mupdf.h : Aucun fichier ou dossier de ce type
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:28: erreur: expected initializer before ‘*’ token
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:29: erreur: expected initializer before ‘*’ token
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp: In member function ‘int Pdf::numPages() const’:
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:37: erreur: ‘pdf_count_pages’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp: In constructor ‘Pdf::Pdf()’:
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:47: erreur: ‘ctx’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:47: erreur: ‘fz_alloc_default’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:47: erreur: ‘fz_new_context’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:48: erreur: ‘cache’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:48: erreur: ‘fz_new_glyph_cache’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp: In member function ‘bool Pdf::open(const QString&)’:
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:61: erreur: ‘ctx’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:61: erreur: ‘fz_try’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:61: erreur: expected `;' before ‘{’ token
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:65: erreur: ‘fz_catch’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:65: erreur: expected `;' before ‘{’ token
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:60: attention : unused variable ‘name’
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp: In destructor ‘Pdf::~Pdf()’:
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:78: erreur: ‘pdf_free_xref’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:81: erreur: ‘ctx’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:81: erreur: ‘cache’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:81: erreur: ‘fz_free_glyph_cache’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:83: erreur: ‘fz_free_context’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp: In member function ‘QImage Pdf::page(int)’:
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:94: erreur: ‘pdf_page’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:94: erreur: ‘pdf_load_page’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:95: erreur: invalid use of member (did you forget the ‘&’ ?)
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:102: erreur: ‘fz_matrix’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:102: erreur: expected `;' before ‘ctm’
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:103: erreur: ‘ctm’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:103: erreur: ‘fz_scale’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:103: erreur: ‘fz_concat’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:104: erreur: invalid use of member (did you forget the ‘&’ ?)
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:104: erreur: base operand of ‘->’ is not a pointer
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:104: erreur: ‘fz_rotate’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:105: erreur: ‘fz_bbox’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:105: erreur: expected `;' before ‘bbox’
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘fz_pixmap’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘pix’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘ctx’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘fz_device_gray’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘bbox’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:106: erreur: ‘fz_new_pixmap_with_rect’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:108: erreur: ‘fz_clear_pixmap_with_color’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:110: erreur: ‘fz_device’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:110: erreur: ‘dev’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:110: erreur: ‘cache’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:110: erreur: ‘fz_new_draw_device’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:111: erreur: ‘pdf_run_page’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:112: erreur: ‘fz_free_device’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:140: erreur: ‘fz_drop_pixmap’ was not declared in this scope
/home/olivier/musescore/mscore/mscore/omr/pdf.cpp:141: erreur: ‘pdf_free_page’ was not declared in this scope
make[3]: *** [omr/CMakeFiles/omr.dir/pdf.cpp.o] Erreur 1
make[3]: quittant le répertoire « /saveb/musescore2/mscore/build.release »
make[2]: *** [omr/CMakeFiles/omr.dir/all] Erreur 2
make[2]: quittant le répertoire « /saveb/musescore2/mscore/build.release »
make[1]: *** [all] Erreur 2
make[1]: quittant le répertoire « /saveb/musescore2/mscore/build.release »
make: *** [release] Erreur 2