Building Fsharp (CentOS)

[TonyAbell]

I followed the steps outlined in option 2 here:
http://fsharp.org/use/linux/

git clone https://github.com/mono/mono
 cd mono
 ./autogen.sh --prefix /usr/local
 make get-monolite-latest
 make EXTERNAL_MCS="${PWD}/mcs/class/lib/monolite/gmcs.exe"
 make
git clone https://github.com/fsharp/fsharp
 cd fsharp
 ./autogen.sh --prefix /usr/local

./autogen.sh --prefix /usr/local
Fsharp build failed because it assumed that mono was installed with a package.
Where I had installed mono using the source code, i.e. make; make install.

I ended up commenting out the package checks in configure.ac

#if ! $PKG_CONFIG --atleast-version=$MONO_REQUIRED_VERSION mono; then
#       AC_MSG_ERROR("You need mono $MONO_REQUIRED_VERSION")
#fi

#if ! $PKG_CONFIG --atleast-version=$MONO_RECOMMENDED_VERSION mono; then
#       AC_MSG_WARN([Mono $MONO_RECOMMENDED_VERSION or higher is recommended, for better GC performance])
#fi

then setting the mono prefix manually

MONOPREFIX="/usr/local"

There should be a command switch which would override the check for the mono package and allow the user to input the mono location.

With the changes above, I am able to generate a the Make files needed to build. However the build fails with the following error:

/root/fsharp/src/fsharp/FSharp.Core/FSharp.Core.fsproj (default targets) ->
/usr/local/lib/mono/4.5/Microsoft.Common.targets (GetFrameworkPaths target) ->

        /usr/local/lib/mono/4.5/Microsoft.Common.targets:  warning : TargetFrameworkVersion 'v2.1' not supported by this toolset (ToolsVersion: 4.0).

/root/fsharp/src/fsharp/FSharp.Core/FSharp.Core.fsproj (default targets) ->
/usr/local/lib/mono/4.5/Microsoft.Common.targets (GetReferenceAssemblyPaths target) ->

        /usr/local/lib/mono/4.5/Microsoft.Common.targets:  warning : Unable to find framework corresponding to the target framework moniker '.NETFramework,Version=v2.1'. Framework assembly references will be resolved from the GAC, which might not be the intended behavior.

         2 Warning(s)
         0 Error(s)

For reference I am using the Linux sandbox provided by Hortonworks
http://hortonworks.com/products/hortonworks-sandbox/#install

Any ideas on what I am doing wrong or how I can fix this build error?

[knocte]

./autogen.sh --prefix /usr/local
Fsharp build failed because it assumed that mono was installed with a package.

What do you mean with this? did you have mono installed as a package too?

[TonyAbell]

Sorry I was not more clear.
Mono was installed using the source code
I used the code below

git clone https://github.com/mono/mono
cd mono
./autogen.sh --prefix /usr/local
make get-monolite-latest
make EXTERNAL_MCS="${PWD}/mcs/class/lib/monolite/gmcs.exe"
make
make install

This is the exact error I get...

[root@sandbox fsharp]# ./autogen.sh --prefix /usr/local
checking whether make sets $(MAKE)... yes
checking for pkg-config... /usr/bin/pkg-config
configure: "pkg-config: /usr/bin/pkg-config"
configure: "PKG_CONFIG_LIBDIR: "
configure: error: "You need mono 3.0"
[root@sandbox fsharp]#

[knocte]

Can you confirm that there's no mono executable in /usr/bin/ ? (If there is, what does /usr/bin/mono --version print?)

[TonyAbell]

I installed mono on /usr/local/

[root@sandbox fsharp]#  /usr/bin/mono --version
-bash: /usr/bin/mono: No such file or directory

when I check on the version on /usr/local/
I get...

[root@sandbox fsharp]#  /usr/local/bin/mono --version
Mono JIT compiler version 3.4.1 (master/11098d2 Thu May 29 01:08:33 PDT 2014)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
        TLS:           __thread
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none
        Misc:          softdebug
        LLVM:          supported, not enabled.
        GC:            sgen
[root@sandbox fsharp]#

[knocte]

I know you installed in /usr/local, but you sure you don't have other mono in /usr ?

[rneatherway]

Have you tried setting PKG_CONFIG_PATH?

[knocte]

I think most distros include a /usr/local path by default in PKG_CONFIG_PATH, maybe CentOS not? That was going to be my next suggestion after he confirmed that he doesn't have 2 mono installations...

[rneatherway]

Yes I would have thought so to, but just thought it was worth checking.
On 30 May 2014 23:56, "Andres G. Aragoneses" notifications@github.com
wrote:

I think most distros include a /usr/local path by default in
PKG_CONFIG_PATH, maybe CentOS not? That was going to be my next suggestion
after he confirmed that he doesn't have 2 mono installations...

—
Reply to this email directly or view it on GitHub
#313 (comment).

[rneatherway]

Rereading Tony's post I see that he doesn't have a /usr/bin/mono so I don't
think it can be two mono installations.
On 31 May 2014 00:10, "Robin Neatherway" robin.neatherway@gmail.com wrote:

Yes I would have thought so to, but just thought it was worth checking.
On 30 May 2014 23:56, "Andres G. Aragoneses" notifications@github.com
wrote:

I think most distros include a /usr/local path by default in
PKG_CONFIG_PATH, maybe CentOS not? That was going to be my next suggestion
after he confirmed that he doesn't have 2 mono installations...

—
Reply to this email directly or view it on GitHub
#313 (comment).

[TonyAbell]

Ok, setting the PKG_CONFIG_PATH worked

[root@sandbox fsharp]# export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
[root@sandbox fsharp]# echo $PKG_CONFIG_PATH
/usr/local/lib/pkgconfig

If one is building mono/fsharp from source, there should be a note that the PKG_CONFIG_PATH should be set.

Thanks for you help.

[robstewart57]

To make this crystal clear, it depends on where the user builds mono, e.g.

$ export PKG_CONFIG_PATH=/path/to/mono-build/lib/pkgconfig/

[caxelrud]

I am having the same problem. The difference is that I installed mono from source to /usr (so the executables are in /usr/bin). I use:

$ export PKG_CONFIG_PATH=/usr/lib/pkgconfig
$ echo $PKG_CONFIG_PATH
/usr/lib/pkgconfig

I can see the folder /usr/lib/pkgconfig.
But when I use:

$ ./autogen.sh --prefix /usr

The error is exactly the same as presented before this issue:

checking whether make sets $(MAKE)... yes
checking for pkg-config... /usr/bin/pkg-config
configure: "pkg-config: /usr/bin/pkg-config"
configure: "PKG_CONFIG_LIBDIR: "
configure: error: "You need mono 3.0"

[knocte]

$ ./autogen.sh --prefix /usr

Mmm, I've always used "=" instead of a space here: --prefix=/usr. Maybe it's the same but can't hurt to test.

[caxelrud]

I realized that mono is actually installed at /mono (/root/mono). The error is gone but now I got another error during compilation, so I will open a new issue.