I try to compile my written C++ code G++ GMP on Windows. My program works fine on Ubuntu. I need to recompile and build the library with Mingw-G++ to eventually compile my final program with Mingw for Windows.
My problem now:
The configure file provided with the library does not look like it can set Mingw-GCC over GCC as compiler anywhere. You can set flags for build and host type but they don't bring the desired results (in my testing).
Im far from being an expert with makefiles and shell scripts, so it might seem like I can't set the compiler, but I think I just overlook something. I can imagine that i need so set the path to Mingw in the configure file myself, but i dont want to break anything YET.
I figured out that there is a CClist in the configure file, which is set to gcc / gcc icc etc... it determines which list of compilers to set depending on the CPU build type (arm/amd64/etc...).<
Another problem: the mingw gcc compiler on linux isn't named gcc unlike on windows but rather x86_64-w64-mingw32-gcc...so the script can't detect it as gcc
Thanks in advance
Edit
After some help from #SuperStormer i set the compiler as mingw32-gcc correctly as my config.status file show, however make check fails with the following warnings:
z.lo spinner.lo trace.lo ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-ar cq .libs/libtests.a memory.o misc.o refmpf.o refmpn.o refmpq.o refmpz.o spinner.o trace.o
libtool: link: x86_64-w64-mingw32-ranlib .libs/libtests.a
libtool: link: ( cd ".libs" && rm -f "libtests.la" && ln -s "../libtests.la" "libtests.la" )
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-bswap.o t-bswap.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-bswap.exe t-bswap.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-bswap.exe t-bswap.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-constants.o t-constants.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-constants.exe t-constants.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-constants.exe t-constants.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-count_zeros.o t-count_zeros.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-count_zeros.exe t-count_zeros.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-count_zeros.exe t-count_zeros.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-hightomask.o t-hightomask.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-hightomask.exe t-hightomask.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-hightomask.exe t-hightomask.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-modlinv.o t-modlinv.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-modlinv.exe t-modlinv.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-modlinv.exe t-modlinv.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-popc.o t-popc.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-popc.exe t-popc.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-popc.exe t-popc.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-parity.o t-parity.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-parity.exe t-parity.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-parity.exe t-parity.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -c -o t-sub.o t-sub.c
/bin/bash ../libtool --tag=CC --mode=link x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -no-install -o t-sub.exe t-sub.o libtests.la ../libgmp.la
libtool: warning: '-no-install' is ignored for x86_64-w64-mingw32
libtool: warning: assuming '-no-fast-install' instead
libtool: link: x86_64-w64-mingw32-gcc -O2 -pedantic -fomit-frame-pointer -m64 -mtune=k8 -march=k8 -o t-sub.exe t-sub.o ./.libs/libtests.a /home/me/Downloads/gmp-6.2.1/.libs/libgmp.a ../.libs/libgmp.a
make[4]: Verzeichnis „/home/me/Downloads/gmp-6.2.1/tests“ wird verlassen
and this
FAIL: t-bswap.exe
FAIL: t-constants.exe
FAIL: t-count_zeros.exe
FAIL: t-hightomask.exe
FAIL: t-modlinv.exe
FAIL: t-popc.exe
FAIL: t-parity.exe
FAIL: t-sub.exe
============================================================================
Testsuite summary for GNU MP 6.2.1
============================================================================
# TOTAL: 8
# PASS: 0
# SKIP: 0
# XFAIL: 0
# FAIL: 8
# XPASS: 0
# ERROR: 0
============================================================================
See tests/test-suite.log
Test-suite-log says: it can't run the .exe file. It's clear to me why it can't, but is there any workaround to create a linux excutable instead? Or is make check expected to fail?
Solution
Quick guess is that make check can't succeed on linux with mingw.
I ran make install, and my program now runs fine (regarding my library issues)
This answer is mostly based on this mailing list post.
Commands ran:
export CC=x86_64-w64-mingw32-gcc
export CC_FOR_BUILD=x86_64-linux-gnu-gcc
./configure --build=x86_64-linux-gnu --host=x86_64-w64-mingw32 --enable-cxx
make
Tweak this however you want.
Related
I have a compilation line the I'm trying to parse, all I'm trying to get is the full file name with the extension from the compilation line, but the compilation line can contain different file extension like '.c' or '.asm' or '.cpp' and of course the order of parameters can be different.
For example :
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.c -o file1.o
or
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.asm -o file1.o
or
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.asm.c -o file1.asm.o
or
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o file1.o -c file1.c
or
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o file1.asm.o -c file1.asm.c
or
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c -o file1.asm.o file1.asm.c
The file names are sometimes enclosed with " for example :
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c "file1.c" -o "file1.o"
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c "file1.asm" -o file1.o"
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c "file1.asm.c" -o "file1.asm.o"
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o "file1.o" -c "file1.c"
gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o "file1.asm.o" -c "file1.asm.c"
I tried the following regular expression in python3 :
r'(?:\")?(\S+(?:\.cpp|\.cxx|\.cc|\.c|\.asm|\.s))(?:\")?'
and
r'(?:\")?(\S+(?:\.cpp|\.cxx|\.cc|\.c|\.asm|\.s)+)(?:\")?'
but I'm getting wrong results
for example for the last case I get :
file1.asm
You can use capture groups to get the file name, and since you always know which flag precedes a file name (-c or -o), you can just get the whole word after it.
The regex is this one:
(?<!-o)\s"?([^-]+?\.[^\s"]+)
And you can use it in a script like so:
import re
pattern = r'(?<!-o)\s"?([^-]+?\.[^\s"]+)'
matcher = re.compile(pattern)
matcher.findall("gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.c -o file1.o")
# ['file1.c']
matcher.findall("gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.asm -o file1.o")
# ['file1.asm']
matcher.findall("gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c file1.asm.c -o file1.asm.o")
# ['file1.asm.c']
matcher.findall("gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o file1.o -c file1.c")
# ['file1.c']
matcher.findall("gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o file1.asm.o -c file1.asm.c")
# ['file1.asm.c']
matcher.findall('gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -o "file1.asm.o" -c "file1.asm.c"')
# ['file1.asm.c']
matcher.findall('gcc -DDEF_SOMETHING -g3 -Iinclude -Wall -c -o file1.asm.o file1.asm.c')
# ['file1.asm.c']
I wanted to install the python module sip (version 4.17) according to the documentation on my Windows 7 machine:
Download from the official page as described in the documentation
Unzip the repository to the folder C:\Python27\Lib\site-packages\sip-4.17
Configure the package with the command python.exe configure.py in this folder
Building the module mingw32-make fails.
Mingw's make returns the following error message:
mingw32-make[1]: Entering directory 'C:/Python27/Lib/site-packages/sip-4.17/sipgen'
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o main.o main.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o transform.o transform.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o gencode.o gencode.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o extracts.o extracts.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o export.o export.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o heap.o heap.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o parser.o parser.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -o lexer.o lexer.c
g++ -mthreads -Wl,-enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-subsystem,console -Wl,-s -o sip.exe main.o transform.o gencode.o extracts.o export.o heap.o parser.o lexer.o
mingw32-make[1]: Leaving directory 'C:/Python27/Lib/site-packages/sip-4.17/sipgen'
mingw32-make[1]: Entering directory 'C:/Python27/Lib/site-packages/sip-4.17/siplib'
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o siplib.o siplib.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o apiversions.o apiversions.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o descriptors.o descriptors.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o qtlib.o qtlib.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o threads.o threads.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o objmap.o objmap.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o voidptr.o voidptr.c
gcc -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o array.o array.c
g++ -c -O2 -w -DNDEBUG -DUNICODE -DQT_LARGEFILE_SUPPORT -I. -IC:\Python27\include -o bool.o bool.cpp
g++ -mthreads -Wl,-enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -shared -Wl,-subsystem,console -Wl,-s -o sip.pyd siplib.o apiversions.o descriptors.o qtlib.o threads.o objmap.o voidptr.o array.o bool.o -LC:\Python27\libs -lpython27
C:\Python27\libs/libpython27.a: error adding symbols: File format not recognized
collect2.exe: error: ld returned 1 exit status
Makefile:36: recipe for target 'sip.pyd' failed
mingw32-make[1]: *** [sip.pyd] Error 1
mingw32-make[1]: Leaving directory 'C:/Python27/Lib/site-packages/sip-4.17/siplib'
Makefile:3: recipe for target 'all' failed
mingw32-make: *** [all] Error 2
I have no clue why it failed to compile the code saying File format not recognized. Is it the same mistake as in g++ output: file not recognized: File format not recognized?
Thank you for your help in advance!
Comment:
I followed the following questions too but I want to install it using the zip file - so I know what is installed.
Can't configure pyQt
How to install SIP & PyQT on windows 7
How did you configure SIP? You need to choose a configuration option (see documentation in the docs file of the SIP archive). I got this to work once I chose --platform win32-g++.
I have wrote a simple code which uses c++11 thread. It compiles correct but when I try to run it I have the following error:
terminate called after throwing an instance of 'std::system_error'
what(): Enable multithreading to use std::thread: Operation not permitted
Aborted (core dumped)
I am using gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1). This is the output of the makefile which I am using
g++ -std=c++11 -DHAVE_CONFIG_H -I. -I../../../.. -I../../../.. -I/usr/local_machine/openmpi-1.6.5/include -pthread -DMPIPP_H -DENABLE_MPI=1 -O3 -Wall -DNDEBUG -funroll-loops -finline-functions -pthread -fomit-frame-pointer -ffast-math -mfpmath=sse -msse3 -MT threadtest-threadtest.o -MD -MP -MF .deps/threadtest-threadtest.Tpo -c -o threadtest-threadtest.o `test -f 'threadtest.cc' || echo './'`threadtest.cc
mv -f .deps/threadtest-threadtest.Tpo .deps/threadtest-threadtest.Po
/bin/bash ../../../../libtool --tag=CXX --mode=link g++ -std=c++11 -O3 -Wall -DNDEBUG -funroll-loops -finline-functions -pthread -fomit-frame-pointer -ffast-math -mfpmath=sse -msse3 -o threadtest threadtest-threadtest.o -pthread -L/usr/local_machine/openmpi-1.6.5/lib -lmpi -ldl -lm -Wl,--export-dynamic -lrt -lnsl -lutil -lm -ldl ../../../../lib/libdunecommon.la -lm
libtool: link: g++ -std=c++11 -O3 -Wall -DNDEBUG -funroll-loops -finline-functions -pthread -fomit-frame-pointer -ffast-math -mfpmath=sse -msse3 -o threadtest threadtest-threadtest.o -pthread -Wl,--export-dynamic -L/usr/local_machine/openmpi-1.6.5/lib /usr/local_machine/openmpi-1.6.5/lib/libmpi.so -lrt -lnsl -lutil -ldl ../../../../lib/.libs/libdunecommon.a -llapack -lblas -lgfortran -lquadmath -lm -pthread -Wl,-rpath -Wl,/usr/local_machine/openmpi-1.6.5/lib -Wl,-rpath -Wl,/usr/local_machine/openmpi-1.6.5/lib
As you can see there is the flag -pthread. What am I doing wrong? Because if I compile a simple code as
g++ threadstest.cc -o threadstest -pthread -std=c++11
everything works fine therefore in my makefile there is something which interferes with -pthread but I don't understand what it is.
Additional information: a workaround which works is to add -Wl,--no-as-needed at the linking stage.
the answer for similar question "Compiling multithread code with g++ (-Wl,--no-as-needed NOT working)"
is
-pthread is a flag for the compiler, not the linker, the right one for the linker is -lpthread
Trying to compile tree from here (i uncommented appropriate section for cygwin in make script):
http://mama.indstate.edu/users/ice/tree/
$ make
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o tree.o tree.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o unix.o unix.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o html.o html.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o xml.o xml.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o hash.o hash.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o color.o color.c
gcc -O2 -Wall -fomit-frame-pointer -DCYGWIN -c -o strverscmp.o strverscmp.c
gcc -s -o tree.exe tree.o unix.o html.o xml.o hash.o color.o strverscmp.o
$ make install
install -d /usr/bin
install -d /usr/man/man1
if [ -e tree.exe ]; then \
install -s tree.exe /usr/bin/tree.exe; \
fi
install doc/tree.1 /usr/man/man1/tree.1
When i try to run however crickets
No output, no error, nothing. I'm using this compiler (running on 64bit cygwin):
/usr/bin/gcc -> i686-pc-cygwin-gcc.exe
What am i doing wrong, how can i resolve?
EDIT:
More on crickets:
i checked return code (echo $?) and it's 127
However, i also did
$ ls /usr/bin | grep tree
tree.exe
When compiling my code I run into an issue as follows:
io.cpp:21: undefined reference to `PQconnectdb'
as well as all other instances of missing postgres function calls occurring in my code. Obviously this is a linking problem, I'm just not sure what the link issue is.
I'm compiling with the following:
mpiCC -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ decisioning_mpi.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ io.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ calculations.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ rules.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ Instrument.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ Backtest_Parameter_CPO.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ Backtest_Trade_CPO.cpp
g++ -c -O2 -g -Wall -Werror -I /usr/include/postgresql/ Data_Bar.cpp
mpiCC -o decisioning_mpi -O2 -g -Wall -Werror -L/usr/lib -lm -lpq decisioning_mpi.o
io.o calculations.o rules.o Instrument.o Backtest_Parameter_CPO.o Backtest_Trade_CPO.o Data_Bar.o
It should be noted that this is the correct directory for libpq-fe.h and that I'm linking pq, so I'm not exactly sure why the postgres functions aren't linking correctly. I'm running Ubuntu 12.04 and installed psql (PostgreSQL) 9.1.6 from synaptic. As well I'll short circuit this, I am using #include "libpq-fe.h".
Any ideas on how I can get this linking issue resolved?
put -L/usr/lib/ -lm -lpq in the end of link command, the linker can then find the symbols
mpiCC -o decisioning_mpi -O2 -g -Wall -Werror decisioning_mpi.o io.o \
calculations.o rules.o Instrument.o Backtest_Parameter_CPO.o \
Backtest_Trade_CPO.o Data_Bar.o -L/usr/lib -lm -lpq
GCC Link Reference:
http://www.network-theory.co.uk/docs/gccintro/gccintro_18.html