Build failure on Gentoo Linux (x86_64)

[godotengine]

Build failure on Gentoo Linux (x86_64)

[papa-agoo]

scons minizip=no bin/godot leads to this:

...
patform/windows/...
...
platform/android/export/export.cpp:373:14: warning: unused variable 'string_data_offset' [-Wunused-variable]
platform/android/export/export.cpp:374:14: warning: unused variable 'styles_offset' [-Wunused-variable]
platform/android/export/export.cpp:443:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
platform/android/export/export.cpp:430:14: warning: unused variable 'line' [-Wunused-variable]
platform/android/export/export.cpp:431:14: warning: unused variable 'nspace' [-Wunused-variable]
platform/android/export/export.cpp:433:14: warning: unused variable 'check' [-Wunused-variable]
platform/android/export/export.cpp:556:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
platform/android/export/export.cpp:600:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
platform/android/export/export.cpp:326:12: warning: unused variable 'CHUNK_AXML_FILE' [-Wunused-variable]
platform/android/export/export.cpp:327:12: warning: unused variable 'CHUNK_RESOURCEIDS' [-Wunused-variable]
platform/android/export/export.cpp:329:12: warning: unused variable 'CHUNK_XML_END_NAMESPACE' [-Wunused-variable]
platform/android/export/export.cpp:330:12: warning: unused variable 'CHUNK_XML_END_TAG' [-Wunused-variable]
platform/android/export/export.cpp:331:12: warning: unused variable 'CHUNK_XML_START_NAMESPACE' [-Wunused-variable]
platform/android/export/export.cpp:333:12: warning: unused variable 'CHUNK_XML_TEXT' [-Wunused-variable]
platform/android/export/export.cpp:341:11: warning: unused variable 'header' [-Wunused-variable]
platform/android/export/export.cpp:342:11: warning: unused variable 'filesize' [-Wunused-variable]
platform/android/export/export.cpp:347:11: warning: unused variable 'string_count' [-Wunused-variable]
platform/android/export/export.cpp:348:11: warning: unused variable 'styles_count' [-Wunused-variable]
platform/android/export/export.cpp:349:11: warning: unused variable 'string_flags' [-Wunused-variable]
platform/android/export/export.cpp:350:11: warning: unused variable 'string_data_offset' [-Wunused-variable]
platform/android/export/export.cpp:352:11: warning: unused variable 'styles_offset' [-Wunused-variable]
platform/android/export/export.cpp: In static member function 'static Error EditorExportPlatformAndroid::save_apk_file(void_, const String&, const Vector&, int, int)':
platform/android/export/export.cpp:669:24: error: 'zipOpenNewFileInZip' was not declared in this scope
platform/android/export/export.cpp:672:56: error: 'zipWriteInFileInZip' was not declared in this scope
platform/android/export/export.cpp:673:27: error: 'zipCloseFileInZip' was not declared in this scope
platform/android/export/export.cpp: In member function 'virtual Error EditorExportPlatformAndroid::export_project(const String&, bool, const String&)':
platform/android/export/export.cpp:706:55: error: 'unzOpen2' was not declared in this scope
platform/android/export/export.cpp:714:32: error: 'unzGoToFirstFile' was not declared in this scope
platform/android/export/export.cpp:719:78: error: 'zipOpen2' was not declared in this scope
platform/android/export/export.cpp:727:66: error: 'unzGetCurrentFileInfo' was not declared in this scope
platform/android/export/export.cpp:735:25: error: 'unzOpenCurrentFile' was not declared in this scope
platform/android/export/export.cpp:736:48: error: 'unzReadCurrentFile' was not declared in this scope
platform/android/export/export.cpp:737:26: error: 'unzCloseCurrentFile' was not declared in this scope
platform/android/export/export.cpp:791:25: error: 'zipOpenNewFileInZip' was not declared in this scope
platform/android/export/export.cpp:793:49: error: 'zipWriteInFileInZip' was not declared in this scope
platform/android/export/export.cpp:794:24: error: 'zipCloseFileInZip' was not declared in this scope
platform/android/export/export.cpp:796:28: error: 'unzGoToNextFile' was not declared in this scope
platform/android/export/export.cpp:810:19: error: 'zipClose' was not declared in this scope
platform/android/export/export.cpp:811:14: error: 'unzClose' was not declared in this scope
platform/android/export/export.cpp: In static member function 'static void EditorExportPlatformAndroid::device_poll_thread(void)':
platform/android/export/export.cpp:999:12: warning: unused variable 'err' [-Wunused-variable]
platform/android/export/export.cpp:940:9: warning: unused variable 'err' [-Wunused-variable]
platform/android/export/export.cpp: In member function 'virtual Error EditorExportPlatformAndroid::run(int)':
platform/android/export/export.cpp:1099:4: warning: statement has no effect [-Wunused-value]
scons: *** [platform/android/export/export.o] Error 1
scons: building terminated because of errors.

[reduz]

minizip is needed, but I'm not sure what the original errors mean. My guess is that gentoo does something weird regarding zlib

[JoseJX]

Gentoo sanitizes the zlib headers because of namespace polution:
https://bugs.gentoo.org/show_bug.cgi?id=383179

This patch fixes it for me and should be okay for distros that don't do this:
--- core/io/ioapi.h.bak 2014-02-20 19:54:44.056383280 -0500
+++ core/io/ioapi.h 2014-02-20 19:55:31.060374495 -0500
@@ -99,6 +99,11 @@
extern "C" {
#endif

+#ifdef _Z_OF
+#undef OF
+#define OF _Z_OF
+#endif
+

#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)

[Evi1M4chine]

Just as an info: Godot compiles perfectly fine on Gentoo (amd64) nowadays.
I’ve successfully done Linux, Android and Javascript* builds (debug & release).
So I don’t think this bug is needed anymore.

The integrated libraries are not welcome on Gentoo, and would have to be removed in the ebuild [Gentoo install script], for it to have a chance of becoming integrated in to the package repository. (This is already done with Mozilla software, where it can be turned on with USE flags.)

But generally, everything is fine.

---

• JS is of course still broken, but that’s another story. :)

[akien-mga]

This issue is old, and apparently fixed judging by the last comment, so archiving it.