Changes to the /usr/lib/64/R/etc/Makeconf file to use the

GNU C, C++ and Fortran compilers. These are applied to the

Makeconf file in the prototype build area as a post install

action in the Makefile.

--- Makeconf.GNU.orig	2016-03-30 18:48:11.403166611 -0700

+++ Makeconf.GNU	2016-03-30 18:53:12.985544279 -0700

@@ -13,38 +13,38 @@

 ## Used by packages 'maps' and 'mapdata'

 AWK = gawk

 BLAS_LIBS = -lsunperf

-C_VISIBILITY = 

-CC = cc

-CFLAGS = -m64 -xO3 -xc99=all -xlibmieee $(LTO)

-CPICFLAGS = -KPIC -DPIC

+C_VISIBILITY = -fvisibility=hidden

+CC = gcc -std=gnu99

+CFLAGS = -g -O2 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 $(LTO)

+CPICFLAGS = -fpic

 CPPFLAGS = -m64

-CXX = CC

+CXX = g++

 CXXCPP = $(CXX) -E

-CXXFLAGS = -norunpath -m64 -xO3 -std=c++11 -D__MATHERR_RENAME_EXCEPTION $(LTO)

-CXXPICFLAGS = -KPIC

-CXX1X = CC

-CXX1XFLAGS = -norunpath -m64 -xO3 -std=c++11 -D__MATHERR_RENAME_EXCEPTION

-CXX1XPICFLAGS = -KPIC

-CXX1XSTD =  

+CXXFLAGS = -m64 -g -O2 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 $(LTO)

+CXXPICFLAGS = -fpic

+CXX1X = g++

+CXX1XFLAGS = -m64 -g -O2 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2

+CXX1XPICFLAGS = -fpic

+CXX1XSTD = -std=c++11

 DYLIB_EXT = .so

 DYLIB_LD = $(CC)

-DYLIB_LDFLAGS = -G -fopenmp# $(CFLAGS) $(CPICFLAGS)

+DYLIB_LDFLAGS = -shared -fopenmp# $(CFLAGS) $(CPICFLAGS)

 DYLIB_LINK = $(DYLIB_LD) $(DYLIB_LDFLAGS) $(LDFLAGS)

 ECHO = echo

 ECHO_C = \c

 ECHO_N = 

 ECHO_T = 

 ## NB, set FC before F77 as on Solaris make, setting FC sets F77

-FC = f95 -m64

-FCFLAGS = -xO3 -m64 $(LTO)

+FC = gfortran -m64

+FCFLAGS = -g -O2 -m64 $(LTO)

 ## additional libs needed when linking with $(FC), e.g. on Solaris

 FCLIBS = -lsunperf -lfsu -lsunmath

-F77 = f95 -m64

-F77_VISIBILITY = 

-FFLAGS = -xO3 -m64 $(LTO)

-FLIBS = -lsunperf -lfsu -lsunmath

-FCPICFLAGS = -PIC

-FPICFLAGS = -KPIC -DPIC

+F77 = gfortran -m64

+F77_VISIBILITY = -fvisibility=hidden

+FFLAGS = -g -O2 -m64 $(LTO)

+FLIBS = -lsunperf -lfsu -lsunmath -lgfortran -lm -lquadmath

+FCPICFLAGS = -fpic

+FPICFLAGS = -fpic

 FOUNDATION_CPPFLAGS = 

 FOUNDATION_LIBS = 

 JAR = /usr/bin/jar

@@ -68,11 +68,11 @@

 ## needed by R CMD config

 LIBnn = lib

 LIBTOOL = $(SHELL) "$(R_HOME)/bin/libtool"

+LDFLAGS = -m64 -fpic -lc -L/usr/lib/studio/64 -R/usr/lib/studio/64 -lsunperf -lfsu -lmtsk -lpicl -lkstat -L/usr/lib/64/R/lib -R/usr/lib/64/R/lib

 LTO = 

 ## needed to build applications linking to static libR

 MAIN_LD = $(CC)

-MAIN_LDFLAGS = -fopenmp

+MAIN_LDFLAGS = -Wl,--export-dynamic -fopenmp

 MAIN_LINK = $(MAIN_LD) $(MAIN_LDFLAGS) $(LDFLAGS)

 MKINSTALLDIRS = $(R_HOME)/bin/mkinstalldirs

 OBJC = gcc

@@ -81,21 +81,21 @@

 OBJCXX = 

 R_ARCH = 

 RANLIB = ranlib

-SAFE_FFLAGS = -xO3 -m64

+SAFE_FFLAGS = -g -O2 -m64 -ffloat-store

 SED = /usr/xpg4/bin/sed

 SHELL = /bin/bash

 SHLIB_CFLAGS = 

 SHLIB_CXXFLAGS = 

 SHLIB_CXXLD = $(CXX)

-SHLIB_CXXLDFLAGS = -lCrunG3 -G

+SHLIB_CXXLDFLAGS = -shared

 SHLIB_CXX1XLD = $(CXX1X) $(CXX1XSTD)

-SHLIB_CXX1XLDFLAGS = -lCrunG3 -G

+SHLIB_CXX1XLDFLAGS = -shared

 SHLIB_EXT = .so

 SHLIB_FCLD = $(FC)

-SHLIB_FCLDFLAGS = -G

+SHLIB_FCLDFLAGS = -shared

 SHLIB_FFLAGS = 

 SHLIB_LD = $(CC)

-SHLIB_LDFLAGS = -G# $(CFLAGS) $(CPICFLAGS)

+SHLIB_LDFLAGS = -shared# $(CFLAGS) $(CPICFLAGS)

 SHLIB_LIBADD = 

 ## We want to ensure libR is picked up from $(R_HOME)/lib

 ## before e.g. /usr/local/lib if a version is already installed.