Cannot compile when using libxml

Question

I have a source file that I can run via the terminal using

gcc source.c -I/usr/include/libxml2 -lxml2 -o output

but when I #include the source file which includes the libxml source files, the compiler complains that the libxml/xmlmemory.h: , libxml/parser.h:, libxml/xpath.h cannot be found : no such file or directory.

Benoit Thiery · Accepted Answer · 2011-04-04 20:54:11Z

6

You need always to keep the -I/usr/include/libxml2 in your gcc statement, so that it can find the header files.

answered Apr 4, 2011 at 20:54

Benoit Thiery

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4 Comments

some_id Over a year ago

What if this file needs to compiled as part of a much larger system? Should I just copy the needed files into the directory where this source file kept?

sehe Over a year ago

Ahah. I hope you're not including the headers from your header files. That would suck. Make sure you depend on libxml2 only internally (in your compilation units, i.e. .c/.cxx/.cpp files)

some_id Over a year ago

I include in the .c files. but doesnt work. I dont have the libxml files in the same directory as the .c I am compiling

Benoit Thiery Over a year ago

@Helium3, yes whatever c files that needs to use libxml will have to be compiled with the -I option.

kjp · Accepted Answer · 2012-07-08 11:27:06Z

5

You can also use xml2-config --cflags --libs to retrieve the compilation flags to add.

kjp@vbox:~/Dev/ScratchDir$ xml2-config --cflags --libs
-I/usr/include/libxml2
-lxml2
kjp@vbox:~/Dev/ScratchDir$

answered Jul 8, 2012 at 11:27

kjp

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Comments

sehe · Accepted Answer · 2011-04-04 20:42:21Z

0

~~It seems like the source is referencing libxml, not libxml2~~ Can you verify that

/usr/include/libxml2/libxml/xmlmemory.h

is in fact accessible? (try to view it)

You don't compile the headers, the headers just have to be accessible as 'description' of the what the libraries implement

answered Apr 4, 2011 at 20:42

sehe

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9 Comments

some_id Over a year ago

Is it possible the files cannot be found because they arent in the same folder as the code being compiled? I include like so #include <libxml/xpath.h> . i dont specify /usr/include/libxml2/libxml

sehe Over a year ago

It's what -I/usr/include/libxml2 is for

some_id Over a year ago

So how do I do this without calling I/usr/include/libxml2 -lxml2 when compiling?

sehe Over a year ago

Why would you do that? Make a compile script/makefile if you think it tedious. Using absolute paths is going to make your code unportable to other machines

some_id Over a year ago

The thing is that my code is part of a much larger system. Its an embedded project with multiple parts to the system. So it shouldnt have to be compiled with loads of command line arguments. So I should write a makefile?

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