configure fails to find mpfr library in non-standard location

[claudiopica]

The flag "--with-mpfr=/non-standard/path/to/lib/" seems to be ignored by the configure script.

A temporary hack to avoid the problem is to set LIBRARY_PATH to point to the library location.

Maybe due to old version of autotools? (v2.59)

[coppolachan]

I think I solved it with the new Makefile.am. Unfortunately I do not have access to a machine without a std installation, but I'm pretty sure this is working now. See the commit history for details.

Tell me if this solved the issue and I will close this issue.

[claudiopica]

The issue still persists. I think it is at the level of the configure.ac file in the root directory. The test program to check for the mpfr library fails to compile because of the non-standard location of the library, resulting in configure to exit with a missing library error.

I think at the moment there are 2 problems in the configure.ac file: 1) we should test for the presence of "--with-mpfr" before the check of the library; 2) set LIB to include MPFR_LIB before the check of the library.

This is an extract of the config.log file:

[Omissis] It was created by rhmc_staggered_cuda configure 0.1.2, which was generated by GNU Autoconf 2.67. Invocation command line was

$ ./configure --enable-cuda=sm_20 --with-mpfr=/people/disk2/pica

[omissis]

configure:4484: checking for mpfr_init in -lmpfr configure:4509: gcc -o conftest -g -O2 conftest.c -lmpfr >&5 /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/libmpfr.a(set_dfl_prec.o): In function mpfr_set_default_prec': (.text+0x37): undefined reference togmp_assert_fail' /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/libmpfr.a(init2.o): In function mpfr_init2': (.text+0x3c): undefined reference togmp_assert_fail' /usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/libmpfr.a(init2.o): In function mpfr_init2': (.text+0x56): undefined reference to__gmp_allocate_func' collect2: ld returned 1 exit status configure:4509: $? = 1 configure: failed program was:	/* confdefs.h _/	#define PACKAGE_NAME "rhmc_staggered_cuda"	#define PACKAGE_TARNAME "rhmc_staggered_cuda"	#define PACKAGE_VERSION "0.1.2"	#define PACKAGE_STRING "rhmc_staggered_cuda 0.1.2"	#define PACKAGE_BUGREPORT "cossu@post.kek.jp"	#define PACKAGE_URL ""	#define PACKAGE "rhmc_staggered_cuda"	#define VERSION "0.1.2"	/ end confdefs.h. /
/_ Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char mpfr_init ();
int
main ()
{
return mpfr_init ();
;
return 0;
}

configure:4518: result: no

[coppolachan]

Try the new version. I included a special test for MPFR library in a separate .m4 file and I am not using anymore the AC_CHECK_LIB directive in configure.ac . I tried with a non standard installation in my machine and it works, the test is passed and it is invoked using the correct -I and -L flags. Tell me if it works.

[claudiopica]

Everything works fine now!

[coppolachan]

Perfect. Now should work also in Rome, where they had similar problems.