Static libs on MacOS X

[luc-j-bourhis]

Hi,

using master as of ab621e9 (Quick fix to set SMLSIZ=25 to get around Mac OS X bug.), the build fails:

~jblas (master)> ./configure --lapack=../lapack-3.4.2 --libpath=$HOME/atlas/lib --static-libs
....
looking for libraries...... {"lapack"=>"/Users/luc/atlas/lib", "f77blas"=>"/Users/luc/atlas/lib", "cblas"=>"/Users/luc/atlas/lib", "atlas"=>"/Users/luc/atlas/lib"}
x86_64
Looking for where libgfortran.a is... (/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../../libgfortran.a)
ok

Configuration succesfull, writing out results to configure.out
~jblas (master)> make
gcc -shared -o target/c/NativeBlas.jnilib target/c/NativeBlas.o /Users/luc/atlas/lib/liblapack.a /Users/luc/atlas/lib/libf77blas.a /Users/luc/atlas/lib/libcblas.a /Users/luc/atlas/lib/libatlas.a /opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../../libgfortran.a
Undefined symbols for architecture x86_64:
  "_quadmath_snprintf", referenced from:
      _write_float in libgfortran.a(write.o)
  "_strtoflt128", referenced from:
      __gfortrani_convert_real in libgfortran.a(read.o)
      __gfortrani_convert_infnan in libgfortran.a(read.o)
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make: *** [target/c/NativeBlas.jnilib] Error 1

Now if I apply the following patch:

diff --git a/config/config_libs.rb b/config/config_libs.rb
index 2055a49..19b9fca 100644
--- a/config/config_libs.rb
+++ b/config/config_libs.rb
@@ -157,10 +157,7 @@ because it's usually not compiled with -fPIC. This means that you need to
 have libgfortran.so installed on your target system. Sorry for the inconvenience!
 EOS
       elsif CONFIG['OS_NAME'] == 'Mac\ OS\ X'
-        print "Looking for where libgfortran.a is... "
-        libgfortran_path = %x(gfortran -print-file-name=libgfortran.a).strip
-             puts "(#{libgfortran_path})"
-             CONFIG['LOADLIBES'] += [libgfortran_path]
+             CONFIG['LOADLIBES'] += ['-lgfortran']
       else
         CONFIG['LOADLIBES'] += ['-l:libgfortran.a']
       end

It all works and the sanity check passes with flying colours. What was the reason for not using -lgfortran on MacOS X?

[mikiobraun]

Hi Luc,

interesting. The reason I tried so hard to locate the statically linked
gfortran library was that I tried to include all dependencies in the jblas
shared lib. Otherwise, people would have to make sure the gfortran runtimes
are installed which might not always be the case.

It seems that libgfortran now has further dependencies which are not
included.. :(

Can you tell me which version of gfortran/gcc you're using?

-M

On Thu, Jun 6, 2013 at 12:59 PM, Luc J. Bourhis notifications@github.comwrote:

Hi,

using master as of ab621e9ab621e9c7b2(Quick fix to set SMLSIZ=25 to get around Mac OS X bug.), the build fails:

~jblas (master)> ./configure --lapack=../lapack-3.4.2 --libpath=$HOME/atlas/lib --static-libs
....
looking for libraries...... {"lapack"=>"/Users/luc/atlas/lib", "f77blas"=>"/Users/luc/atlas/lib", "cblas"=>"/Users/luc/atlas/lib", "atlas"=>"/Users/luc/atlas/lib"}
x86_64
Looking for where libgfortran.a is... (/opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../../libgfortran.a)
ok

Configuration succesfull, writing out results to configure.out
~jblas (master)> make
gcc -shared -o target/c/NativeBlas.jnilib target/c/NativeBlas.o /Users/luc/atlas/lib/liblapack.a /Users/luc/atlas/lib/libf77blas.a /Users/luc/atlas/lib/libcblas.a /Users/luc/atlas/lib/libatlas.a /opt/local/lib/gcc47/gcc/x86_64-apple-darwin11/4.7.3/../../../libgfortran.a
Undefined symbols for architecture x86_64:
"_quadmath_snprintf", referenced from:
_write_float in libgfortran.a(write.o)
"_strtoflt128", referenced from:
__gfortrani_convert_real in libgfortran.a(read.o)
__gfortrani_convert_infnan in libgfortran.a(read.o)
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make: *** [target/c/NativeBlas.jnilib] Error 1

Now if I apply the following patch:

diff --git a/config/config_libs.rb b/config/config_libs.rb
index 2055a49..19b9fca 100644
--- a/config/config_libs.rb
+++ b/config/config_libs.rb
@@ -157,10 +157,7 @@ because it's usually not compiled with -fPIC. This means that you need to
have libgfortran.so installed on your target system. Sorry for the inconvenience!
EOS
elsif CONFIG['OS_NAME'] == 'Mac\ OS\ X'

•    print "Looking for where libgfortran.a is... "
  

•    libgfortran_path = %x(gfortran -print-file-name=libgfortran.a).strip
  

•         puts "(#{libgfortran_path})"
  

•         CONFIG['LOADLIBES'] += [libgfortran_path]
  

•         CONFIG['LOADLIBES'] += ['-lgfortran']
  

  else
  CONFIG['LOADLIBES'] += ['-l:libgfortran.a']
  end

It all works and the sanity check passes with flying colours. What was the
reason for not using -lgfortran on MacOS X?

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/31
.

Mikio Braun - http://blog.mikiobraun.de, http://twitter.com/mikiobraun

[luc-j-bourhis]

I installed the MacPorts package gcc4.7.

[mikiobraun]

I see, I have gcc 4.2...

On Thu, Jun 6, 2013 at 3:20 PM, Luc J. Bourhis notifications@github.comwrote:

I installed the MacPorts package gcc4.7.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/31#issuecomment-19044350
.

Mikio Braun - http://blog.mikiobraun.de, http://twitter.com/mikiobraun

[mikiobraun]

Time to make it work under MacOS again... .