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I'm trying to configure MapServer 6.2.0 for compilation on CentOS 6.3, but always run into the same problem, no matter what configure options I supply (also the same with no options at all, just plain configure).

It has something to do with g++ (although I do not really understand why it tries to use it).

Here is the output:

http://pastebin.com/8H5vmrPi

What is wrong?

EDIT: This problem was solved with yum install gcc-c++, as suggested by @steko. Now, I have another error, which is weird in my opinion:

configure: checking whether we should include PROJ.4 support...
configure: error: "Could not find proj_api.h or libproj.a/libproj.so in /usr/lib64."

Although locate proj_api.h gives /usr/include/proj_api.h (I also set --with-proj=/usr/include for configure, not as in the paste bin).

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Re: proj, according to mapserver.org/installation/unix.html#compiling you should only do --with-proj=/usr or --with-proj=/usr/local respectively if installed from package or from source. – steko Dec 18 '12 at 16:29
--with-proj=/usr did the trick, although I don't know why, since a more exact path definition should be working as well. – wnstnsmth Dec 18 '12 at 16:46
The reason is because the Mapserver configure script knows where the Proj.4 files are installed with respect to the base install path, that is /usr. Includes are in /usr/include but binaries are in /usr/bin and so on. Proj.4 doesn't have a "pkg-config" executable like GDAL. – steko Dec 18 '12 at 16:50
There's a reason why most people use compiled binary packages from distributions :-) yum install curl-devel. You will need to do this for all libraries that are missing. – steko Dec 18 '12 at 16:58
Saw that. Well I thought I have all the necessary libs installed, but turned out now. In this case I only had libcurl installed, not libcurl-devel. Concerning binaries, MapServer doesn't have one. Correct me if I'm wrong. – wnstnsmth Dec 18 '12 at 17:04

1 Answer

up vote 2 down vote accepted

Judging from the last few lines of output:

checking for g++... no
checking for c++... no
checking for gpp... no
checking for aCC... no
checking for CC... no
checking for cxx... no
checking for cc++... no
checking for cl.exe... no
checking for FCC... no
checking for KCC... no
checking for RCC... no
checking for xlC_r... no
checking for xlC... no
checking whether we are using the GNU C++ compiler... no
checking whether g++ accepts -g... no
checking whether the C++ compiler works... configure: error: g++ cannot compile

you are missing the g++ compiler and you should be able to install it with

yum install gcc-c++

You will need also GDAL/OGR and the Proj.4 library. In general, follow the step-by-step instructions at http://www.mapserver.org/installation/unix.html#compiling

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Yeah, but why does it say then: checking whether we are using the GNU C++ compiler... no? – wnstnsmth Dec 18 '12 at 16:07
Alright, it solved THAT problem, thanks.. now I have another error in my configure script, don't know whether I should open up a new question. – wnstnsmth Dec 18 '12 at 16:10
If it is again related to something missing, it should be ok to rephrase the question as "What packages to I need to install on CentOS to compile MapServer from source" – steko Dec 18 '12 at 16:11

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