Question

我正在尝试编译需要所需库libmusicxml的示例文件。

我按照他们的说法（cmake，make，make install）编译了库，并制作并安装了一堆文件：

Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/libmusicxml2.so.3.00
-- Installing: /usr/local/lib/libmusicxml2.so
-- Installing: /usr/local/include/libmusicxml/musicxmlfactory.h
-- Installing: /usr/local/include/libmusicxml/sortvisitor.h
-- Installing: /usr/local/include/libmusicxml/xmlreader.h
... etc

现在我想编译他们的一个示例文件，所以我运行g + filename.cpp，它给了我以下错误：

libmusicxml.h: No such file or directory

这是否意味着它没有在/ usr / local中看到库？我可以在某处指定吗？设置路径或什么？

我已确保从here获得最新版本的libmusicxml库并执行相同的操作（cmake后跟make）。

当我去提供示例并尝试制作一个（使用提供的make文件，根据开发人员工作）时，它不想这样做：

dorien@XP:~/bin/libmusicxml-master/samples$ make
gcc -g -O3 -Wall -Wuninitialized -I../src/elements -I../src/interface -I../src/files -I../src/lib -I../src/parser -I../src/visitors -I../src/guido -I../src/operations countnotes.cpp ../libmusicxml2.a -lstdc++ -o countnotes
gcc: error: ../libmusicxml2.a: No such file or directory
Makefile:14: recipe for target 'countnotes' failed

- ＆GT;我试图找到libmusicxml2.a，但这似乎不存在。

当我运行xml2guido（它似乎在包的根目录中有一个编译版本）时，我得到：

xml2guido: error while loading shared libraries: libmusicxml2.so.3.00: cannot open shared object file: No such file or directory

但是，同一目录中有一个libmusicxml2.so.3.00

也许是因为包没有正确链接？或者关于丢失的.a文件的内容？

我确实认为它构建正确：

 make
[ 73%] Built target musicxml2
[ 75%] Built target RandomMusic
[ 78%] Built target countnotes
[ 80%] Built target partsummary
[ 82%] Built target readunrolled
[ 85%] Built target xml2guido
[ 87%] Built target xml2midi
[ 90%] Built target xmlclone
[ 92%] Built target xmlfactory
[ 95%] Built target xmliter
[ 97%] Built target xmlread
[100%] Built target xmltranspose

dorien@XP:~/bin/libmusicxml-master$ sudo make install
[ 73%] Built target musicxml2
[ 75%] Built target RandomMusic
[ 78%] Built target countnotes
[ 80%] Built target partsummary
[ 82%] Built target readunrolled
[ 85%] Built target xml2guido
[ 87%] Built target xml2midi
[ 90%] Built target xmlclone
[ 92%] Built target xmlfactory
[ 95%] Built target xmliter
[ 97%] Built target xmlread
[100%] Built target xmltranspose
Install the project...
-- Install configuration: ""
-- Up-to-date: /usr/local/lib/libmusicxml2.so.3.00
-- Up-to-date: /usr/local/lib/libmusicxml2.so
-- Up-to-date: /usr/local/include/libmusicxml/musicxmlfactory.h
-- Up-to-date: /usr/local/include/libmusicxml/sortvisitor.h
-- Up-to-date: /usr/local/include/libmusicxml/xmlreader.h
-- Up-to-date: /usr/local/include/libmusicxml/xmlfile.h
-- Up-to-date: /usr/local/include/libmusicxml/libmusicxml.h
-- Up-to-date: /usr/local/include/libmusicxml/unrolled_xml_tree_browser.h
-- Up-to-date: /usr/local/include/libmusicxml/xml.h
-- Up-to-date: /usr/local/include/libmusicxml/elements.h
-- Up-to-date: /usr/local/include/libmusicxml/factory.h
-- Up-to-date: /usr/local/include/libmusicxml/types.h
-- Up-to-date: /usr/local/include/libmusicxml/typedefs.h
-- Up-to-date: /usr/local/include/libmusicxml/xml_tree_browser.h
-- Up-to-date: /usr/local/include/libmusicxml/versions.h
-- Up-to-date: /usr/local/include/libmusicxml/exports.h

Answer 1

这是否意味着它没有在/ usr / local中看到库？

这意味着它找不到标题libmusicxml.h。您没有告诉编译器在/usr/local/include/libmusicxml中查找它。

我可以在某处指定吗？设置路径或什么？

请参阅编译器的文档。在gcc中，包含搜索路径的选项为-I。

我建议不要从libmusicxml.h搜索标题/usr/local/include/libmusicxml/，而是要libmusicxml/libmusicxml.h并从/usr/local/include搜索。这会更简单，因为默认情况下g ++从/usr/local/include搜索，因此不需要编译器选项。

Answer 2

在我跑步之前，图书馆（和标题）都没有被识别出来：

export LD_LIBRARY_PATH=/addressto/libmusicxml-master

修复了它。

g ++找不到已安装的库

2 个答案: