From 6df39ad9e75d0c8250bc4146c09fb38f8954b612 Mon Sep 17 00:00:00 2001
From: Zhang Xianyi <traits.zhang@gmail.com>
Date: Wed, 10 Jul 2013 16:02:27 +0800
Subject: [PATCH] Refs #248. Support LAPACK and LAPACKE with lsbcc.

For LAPACKE, use LAPACK_COMPLEX_STRUCTURE.
The reson is lsbcc didn't define complex I in complex.h.
---
 Makefile         |  6 +-----
 Makefile.system  | 26 +++++++++++++++++++++-----
 c_check          |  3 ++-
 ctest.c          | 10 ++++++++++
 exports/Makefile |  5 +++++
 5 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile
index 2d6e51dc7..873b6dedd 100644
--- a/Makefile
+++ b/Makefile
@@ -227,11 +227,7 @@ ifndef NOFORTRAN
 	-@echo "PNOOPT      = $(FPFLAGS) -O0" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "LOADOPTS    = $(FFLAGS) $(EXTRALIB)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "CC          = $(CC)" >> $(NETLIB_LAPACK_DIR)/make.inc
-ifdef INTERFACE64
-	-@echo "override CFLAGS      = $(CFLAGS) -DHAVE_LAPACK_CONFIG_H  -DLAPACK_ILP64" >> $(NETLIB_LAPACK_DIR)/make.inc
-else
-	-@echo "override CFLAGS      = $(CFLAGS)" >> $(NETLIB_LAPACK_DIR)/make.inc
-endif
+	-@echo "override CFLAGS      = $(LAPACK_CFLAGS)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "ARCH        = $(AR)" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "ARCHFLAGS   = -ru" >> $(NETLIB_LAPACK_DIR)/make.inc
 	-@echo "RANLIB      = $(RANLIB)" >> $(NETLIB_LAPACK_DIR)/make.inc
diff --git a/Makefile.system b/Makefile.system
index 5c5801361..1388a816e 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -240,7 +240,8 @@ NO_BINARY_MODE	= 1
 endif
 ifndef NO_EXPRECISION
 ifeq ($(F_COMPILER), GFORTRAN)
-ifeq ($(C_COMPILER), GCC)
+# ifeq logical or. GCC or LSB
+ifeq ($(C_COMPILER), $(filter $(C_COMPILER),GCC LSB))
 EXPRECISION	= 1
 CCOMMON_OPT	+= -DEXPRECISION -m128bit-long-double
 FCOMMON_OPT	+= -m128bit-long-double
@@ -257,7 +258,8 @@ endif
 ifeq ($(ARCH), x86_64)
 ifndef NO_EXPRECISION
 ifeq ($(F_COMPILER), GFORTRAN)
-ifeq ($(C_COMPILER), GCC)
+# ifeq logical or. GCC or LSB
+ifeq ($(C_COMPILER), $(filter $(C_COMPILER),GCC LSB))
 EXPRECISION	= 1
 CCOMMON_OPT	+= -DEXPRECISION -m128bit-long-double
 FCOMMON_OPT	+= -m128bit-long-double
@@ -276,7 +278,8 @@ CCOMMON_OPT    += -wd981
 endif
 
 ifeq ($(USE_OPENMP), 1)
-ifeq ($(C_COMPILER), GCC)
+# ifeq logical or. GCC or LSB
+ifeq ($(C_COMPILER), $(filter $(C_COMPILER),GCC LSB))
 CCOMMON_OPT    += -fopenmp
 endif
 
@@ -350,9 +353,10 @@ endif
 #  C Compiler dependent settings
 #
 
-# ifeq logical or. GCC or CLANG
+
+# ifeq logical or. GCC or CLANG or LSB
 # http://stackoverflow.com/questions/7656425/makefile-ifeq-logical-or
-ifeq ($(C_COMPILER), $(filter $(C_COMPILER),GCC CLANG))
+ifeq ($(C_COMPILER), $(filter $(C_COMPILER),GCC CLANG LSB))
 CCOMMON_OPT += -Wall
 COMMON_PROF += -fno-inline
 NO_UNINITIALIZED_WARN =  -Wno-uninitialized
@@ -445,9 +449,12 @@ endif
 ifeq ($(F_COMPILER), GFORTRAN)
 CCOMMON_OPT += -DF_INTERFACE_GFORT
 FCOMMON_OPT += -Wall
+#Don't include -lgfortran, when NO_LAPACK=1 or lsbcc
 ifneq ($(NO_LAPACK), 1)
+ifneq ($(C_COMPILER), LSB)
 EXTRALIB += -lgfortran 
 endif
+endif
 ifdef NO_BINARY_MODE
 ifeq ($(ARCH), mips64)
 ifdef BINARY64
@@ -781,6 +788,15 @@ override FFLAGS     += $(COMMON_OPT) $(FCOMMON_OPT)
 override FPFLAGS    += $(COMMON_OPT) $(FCOMMON_OPT) $(COMMON_PROF)
 #MAKEOVERRIDES =
 
+LAPACK_CFLAGS = $(CFLAGS)
+LAPACK_CFLAGS += -DHAVE_LAPACK_CONFIG_H 
+ifdef INTERFACE64
+LAPACK_CFLAGS +=  -DLAPACK_ILP64
+endif
+ifeq ($(C_COMPILER), LSB)
+LAPACK_CFLAGS +=  -DLAPACK_COMPLEX_STRUCTURE
+endif
+
 ifndef SUFFIX
 SUFFIX  = o
 endif
diff --git a/c_check b/c_check
index acd8df5f4..d5fe59f75 100644
--- a/c_check
+++ b/c_check
@@ -33,6 +33,7 @@ if ($ARGV[0] =~ /(.*)(-[.\d]+)/) {
 }
 
 $compiler = "";
+$compiler = LSB       if ($data =~ /COMPILER_LSB/);
 $compiler = CLANG     if ($data =~ /COMPILER_CLANG/);
 $compiler = PGI       if ($data =~ /COMPILER_PGI/);
 $compiler = PATHSCALE if ($data =~ /COMPILER_PATHSCALE/);
@@ -122,7 +123,7 @@ if ($compiler eq "CLANG") {
     $openmp = "-fopenmp";
 }
 
-if ($compiler eq "GCC") {
+if ($compiler eq "GCC" || $compiler eq "LSB") {
     $openmp = "-fopenmp";
 }
 
diff --git a/ctest.c b/ctest.c
index 624cad159..413519274 100644
--- a/ctest.c
+++ b/ctest.c
@@ -1,3 +1,13 @@
+//LSB (Linux Standard Base) compiler
+//only support lsbc++
+#if defined (__LSB_VERSION__)
+#if !defined (__cplusplus)
+COMPILER_LSB
+#else
+#error "OpenBLAS only supports lsbcc."
+#endif
+#endif
+
 #if defined(__clang__)
 COMPILER_CLANG
 #endif
diff --git a/exports/Makefile b/exports/Makefile
index 15041be86..6502d5d01 100644
--- a/exports/Makefile
+++ b/exports/Makefile
@@ -119,7 +119,12 @@ so : ../$(LIBSONAME)
 	$(CC) $(CFLAGS) -shared -o ../$(LIBSONAME) \
 	-Wl,--whole-archive ../$(LIBNAME) -Wl,--no-whole-archive \
 	-Wl,--retain-symbols-file=linux.def -Wl,-soname,$(LIBPREFIX).so.$(MAJOR_VERSION) $(EXTRALIB)
+ifneq ($(C_COMPILER), LSB)
 	$(CC) $(CFLAGS) -w -o linktest linktest.c ../$(LIBSONAME) $(FEXTRALIB) && echo OK.
+else
+#Use FC on LSB
+	$(FC) $(FFLAGS) -w -o linktest linktest.c ../$(LIBSONAME) $(FEXTRALIB) && echo OK.
+endif
 	rm -f linktest
 
 endif