Re: Problems to include mysql.h in the Makefile

[Benoit SIGOURE]

On Jul 20, 2007, at 9:33 PM, Damian Montaldo wrote:

> On 7/17/07, Benoit SIGOURE <address@hidden> wrote:
> > On Jul 17, 2007, at 8:22 PM, Damian Montaldo wrote:
> >
> > > Hi, i'm having some problems to include mysql.h when i compile C
> > > source code.
> >
> > Hello Damian,
> >
> > >
> > > I'm using this macro
> > > http://autoconf-archive.cryp.to/ax_lib_mysql.html
> > > to find the path to mysql.h in a Debian Linux and work fine.
> > >
> > > $ ./configure
> > > ...
> > > checking for mysql_config... /usr/bin/mysql_config
> > > checking for MySQL libraries... yes
> > > ...
> > >
> > > When i run configure it generates this line in the Makefile file:
> > >
> > > MYSQL_CFLAGS = -I/usr/include/mysql -DBIG_JOINS=1
> > > MYSQL_CONFIG = /usr/bin/mysql_config
> > > MYSQL_LDFLAGS = -L/usr/lib/mysql -lmysqlclient
> > > MYSQL_VERSION = 5.0.32
> > > [...]
> > > But when i run make it doesn't include the MYSQL_CFLAGS so it's
> > > imposible to resolve this #include <mysql.h>
> >
> > This macro provides you with the flags required to use MySQL in your
> > builds but it does not actually enforce them.  And this is a sane
> > behavior.  So now, you simply need to use these flags whenever you
> > need them, eg:
>
> Yes, you're right. Now I understand why.
> May be you want to compile different source files with different
> include using different macros.
>
> > bin_PROGRAMS = mysqlcli
> > mysqlcli_SOURCES = ...
> > mysqlcli_CFLAGS = $(MYSQL_CFLAGS) $(AM_CFLAGS)
> > (don't forget to add the AM_*flags in the target-specific_*FLAGS)
> >
> > Or simply...
> >
> > bin_PROGRAMS = mysqlcli
> > mysqlcli_SOURCES = ...
> > AM_CFLAGS = $(MYSQL_CFLAGS)
> >
> > ... if you don't already use AM_CFLAGS and all the targets of this
> > Makefile.am must use $(MYSQL_CFLAGS).  If you already use AM_CFLAGS,
> > then simply use `+=' instead of `='.
>
> Thanks this really help me but I have another question about it:
> I choose the first option because it looks more declarative and i have
> this other problem.
>
> Makefile.am:
> bin_PROGRAMS = clumon
> clumon_SOURCES = clumon.c
>
> # set the include path found by configure
> INCLUDES= $(all_includes)
>
> # the library search path.
> clumon_LDFLAGS = $(all_libraries) $(MYSQL_LDFLAGS)
> clumon_CFLAGS = $(MYSQL_CFLAGS)
>
> clumon_DEPENDENCIES = -I/usr/local/include -I/usr/include/mysql

I don't quite see what you're trying to achieve with INCLUDES and  
_DEPENDENCIES, I don't think this is correct.

> Error:
> src/Makefile.am: required file `./compile' not found
>
> I can't find any similar problem in the history of the mailing list.
> With the second choice I replace
> clumon_CFLAGS = $(MYSQL_CFLAGS)
> for this
> AM_CFLAGS = $(MYSQL_CFLAGS)
> and it's working.
>
> Any idea?

Nope, not right now, sorry.  You forgot to reply with "reply all" so  
I'm forwarding this question back to the mailing list, hopefully  
someone will be able to help you out :)

Cheers,

--
Benoit Sigoure aka Tsuna
EPITA Research and Development Laboratory

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