First pass at converting a few makefiles to CMake.

.gitignore

@@ -65,3 +65,4 @@ test/sblat3
 test/zblat1
 test/zblat2
 test/zblat3
+build

CMakeLists.txt

@@ -0,0 +1,18 @@
+##
+## Author: Hank Anderson <hank@statease.com>
+## Copyright: (c) Stat-Ease, Inc.
+## Created: 12/23/14
+## Last Modified: 12/23/14
+##
+
+cmake_minimum_required(VERSION 2.8.4)
+project(OpenBLAS)
+
+# is this necessary? lapack-netlib has its own fortran checks in its CMakeLists.txt
+#enable_language(Fortran)
+
+message(WARNING "CMake support is experimental. This will not produce the same Makefiles that OpenBLAS ships with.")
+
+include("${CMAKE_SOURCE_DIR}/cmake/system.cmake")
+
+

cmake/c_check.cmake

@@ -0,0 +1,29 @@
+##
+## Author: Hank Anderson <hank@statease.com>
+## Copyright: (c) Stat-Ease, Inc.
+## Created: 12/29/14
+## Last Modified: 12/29/14
+## Description: Ported from the OpenBLAS/c_check perl script.
+##              This is triggered by prebuild.cmake and runs before any of the code is built.
+##              Creates config.h and Makefile.conf.
+
+# N.B. c_check is not cross-platform, so instead try to use CMake variables. Alternatively, could use try_compile to get some of this info the same way c_check does.
+
+# run c_check (creates the TARGET files)
+# message(STATUS "Running c_check...")
+# execute_process(COMMAND perl c_check ${TARGET_MAKE} ${TARGET_CONF} ${CMAKE_CXX_COMPILER}
+#    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+# TODO: is ${BINARY} sufficient for the __32BIT__ define?
+# TODO: CMAKE_SYSTEM_PROCESSOR is not set by CMake, need to set it manually when doing a cross-compile
+# TODO: CMAKE_CXX_COMPILER_ID and CMAKE_SYSTEM_NAME are probably not the same strings as OpenBLAS is expecting
+# TODO: detect this
+set(NEED_FU 1)
+
+file(WRITE ${TARGET_CONF}
+  "#define OS_${CMAKE_SYSTEM_NAME}\t1\n"
+  "#define ARCH_${CMAKE_SYSTEM_PROCESSOR}\t1\n"
+  "#define C_${CMAKE_CXX_COMPILER_ID}\t1\n"
+  "#define __${BINARY}BIT__\t1\n"
+  "#define FUNDERSCORE\t${NEED_FU}\n")
+

cmake/f_check.cmake

@@ -0,0 +1,37 @@
+##
+## Author: Hank Anderson <hank@statease.com>
+## Copyright: (c) Stat-Ease, Inc.
+## Created: 12/29/14
+## Last Modified: 12/29/14
+## Description: Ported from the OpenBLAS/f_check perl script.
+##              This is triggered by prebuild.cmake and runs before any of the code is built.
+##              Appends Fortran information to config.h and Makefile.conf.
+
+
+if (NOT ${ONLY_CBLAS})
+  # N.B. f_check is not cross-platform, so instead try to use CMake variables
+  # run f_check (appends to TARGET files)
+#  message(STATUS "Running f_check...")
+#  execute_process(COMMAND perl f_check ${TARGET_MAKE} ${TARGET_CONF} ${CMAKE_Fortran_COMPILER}
+#    WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+  # TODO: is BU makefile macro needed?
+  # TODO: detect whether underscore needed, set #defines appropriately - use try_compile
+  # TODO: set FEXTRALIB flags a la f_check?
+
+  set(BU "_")
+  file(APPEND ${TARGET_CONF}
+    "#define BUNDERSCORE _\n"
+    "#define NEEDBUNDERSCORE 1\n"
+    "#define NEED2UNDERSCORES 0\n")
+
+else ()
+
+  #When we only build CBLAS, we set NOFORTRAN=2
+  set(NOFORTRAN 2)
+  set(NO_FBLAS 1)
+  set(BU "_")
+  file(APPEND ${TARGET_CONF}
+    "#define BUNDERSCORE _\n"
+    "#define NEEDBUNDERSCORE 1\n")
+endif()

cmake/prebuild.cmake

@@ -0,0 +1,55 @@
+##
+## Author: Hank Anderson <hank@statease.com>
+## Copyright: (c) Stat-Ease, Inc.
+## Created: 12/29/14
+## Last Modified: 12/29/14
+## Description: Ported from OpenBLAS/Makefile.prebuild
+##              This is triggered by system.cmake and runs before any of the code is built.
+##              Creates config.h and Makefile.conf by first running the c_check perl script (which creates those files).
+##              Next it runs f_check and appends some fortran information to the files.
+##              Finally it runs getarch and getarch_2nd for even more environment information.
+
+# CPUIDEMU = ../../cpuid/table.o
+
+if (DEFINED CPUIDEMU)
+  set(EXFLAGS "-DCPUIDEMU -DVENDOR=99")
+endif ()
+
+if (DEFINED TARGET_CORE)
+  # set the C flags for just this file
+  set_source_files_properties(getarch_2nd.c PROPERTIES COMPILE_FLAGS "-DBUILD_KERNEL")
+  set(TARGET_MAKE "Makefile_kernel.conf")
+  set(TARGET_CONF "config_kernel.h")
+else()
+  set(TARGET_MAKE "Makefile.conf")
+  set(TARGET_CONF "config.h")
+endif ()
+
+include("${CMAKE_SOURCE_DIR}/cmake/c_check.cmake")
+include("${CMAKE_SOURCE_DIR}/cmake/f_check.cmake")
+
+# compile getarch
+# TODO: need to use execute_process here, or compilation won't happen until later - maybe make temporary CMakeLists.txt file using file() ?
+#add_executable(getarch getarch.c cpuid.S ${CPUIDEMU}
+#  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+#
+## run getarch, which appends even more to the TARGET files
+#message(STATUS "Running getarch")
+#execute_process(COMMAND getarch 0 >> ${TARGET_MAKE}
+#  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+#execute_process(COMMAND getarch 1 >> ${TARGET_CONF}
+#  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+#
+## config.h is ready for getarch_2nd now, so compile that
+#set(GETARCH2_SOURCES getarch_2nd.c config.h)
+#add_executable(getarch_2nd getarch_2nd.c config.h)
+#
+## finally run getarch_2nd, appending yet more to the TARGET files
+#message(STATUS "Running getarch_2nd")
+#execute_process(COMMAND getarch_2nd 0 >> ${TARGET_MAKE}
+#  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+#execute_process(COMMAND getarch_2nd 1 >> ${TARGET_CONF}
+#  WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
+
+# TODO: need to read in the vars from Makefile.conf/Makefile_kernel.conf
+

cmake/system.cmake

@@ -0,0 +1,130 @@
+##
+## Author: Hank Anderson <hank@statease.com>
+## Copyright: (c) Stat-Ease, Inc.
+## Created: 12/29/14
+## Last Modified: 12/29/14
+## Description: Ported from OpenBLAS/Makefile.system
+##
+
+set(NETLIB_LAPACK_DIR "${CMAKE_SOURCE_DIR}/lapack-netlib")
+
+# TODO: Makefile.system detects Darwin (mac) and switches to clang here -hpa
+# http://stackoverflow.com/questions/714100/os-detecting-makefile
+
+# TODO: Makefile.system sets HOSTCC = $(CC) here if not already set -hpa
+
+# TARGET_CORE will override TARGET which is used in DYNAMIC_ARCH=1.
+if (DEFINED TARGET_CORE)
+  set(TARGET ${TARGET_CORE})
+endif ()
+
+# Force fallbacks for 32bit
+if (DEFINED BINARY AND DEFINED TARGET AND BINARY EQUAL 32)
+  message(STATUS "Compiling a ${BINARY}-bit binary.")
+  set(NO_AVX 1)
+  if (${TARGET} STREQUAL "HASWELL" OR ${TARGET} STREQUAL "SANDYBRIDGE")
+    set(TARGET "NEHALEM")
+  endif ()
+  if (${TARGET} STREQUAL "BULLDOZER" OR ${TARGET} STREQUAL "PILEDRIVER")
+    set(TARGET "BARCELONA")
+  endif ()
+endif ()
+
+if (DEFINED TARGET)
+  message(STATUS "Targetting the ${TARGET} architecture.")
+  set(GETARCH_FLAGS "-DFORCE_${TARGET}")
+endif ()
+
+if (${INTERFACE64})
+  message(STATUS "Using 64-bit integers.")
+  set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DUSE64BITINT")
+endif ()
+
+if (NOT DEFINED GEMM_MULTITHREAD_THRESHOLD)
+  set(GEMM_MULTITHREAD_THRESHOLD 4)
+endif ()
+message(STATUS "GEMM multithread threshold set to ${GEMM_MULTITHREAD_THRESHOLD}.")
+set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DGEMM_MULTITHREAD_THRESHOLD=${GEMM_MULTITHREAD_THRESHOLD}")
+
+if (${NO_AVX})
+  message(STATUS "Disabling Advanced Vector Extensions (AVX).")
+  set(GETARCH_FLAGS "${GETARCH_FLAGS} -DNO_AVX")
+endif ()
+
+if (${NO_AVX2})
+  message(STATUS "Disabling Advanced Vector Extensions 2 (AVX2).")
+  set(GETARCH_FLAGS "${GETARCH_FLAGS} -DNO_AVX2")
+endif ()
+
+if (CMAKE_BUILD_TYPE STREQUAL Debug)
+  set(GETARCH_FLAGS "${GETARCH_FLAGS} -g")
+endif ()
+
+# TODO: let CMake handle this? -hpa
+#if (${QUIET_MAKE})
+#  set(MAKE "${MAKE} -s")
+#endif()
+
+if (NOT DEFINED NO_PARALLEL_MAKE)
+  set(NO_PARALLEL_MAKE 0)
+endif ()
+set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DNO_PARALLEL_MAKE=${NO_PARALLEL_MAKE}")
+
+if (CMAKE_CXX_COMPILER STREQUAL loongcc)
+  set(GETARCH_FLAGS	"${GETARCH_FLAGS} -static")
+endif ()
+
+#if don't use Fortran, it will only compile CBLAS.
+if (${ONLY_CBLAS})
+  set(NO_LAPACK 1)
+else ()
+  set(ONLY_CBLAS 0)
+endif ()
+
+include("${CMAKE_SOURCE_DIR}/cmake/prebuild.cmake")
+
+if (NOT DEFINED NUM_THREADS)
+  # TODO: NUM_CORES comes from `getarch.c` or `cpuid_x86.c`. This is built and executed above in `Makefile.prebuild`, and the results are in `Makefile.conf` and `Makefile_kernel.conf`. -hpa
+  set(NUM_THREADS ${NUM_CORES})
+endif ()
+
+if (NUM_THREADS EQUALS 1)
+  # TODO: was "override USE_THREAD = 0", do we need override here? -hpa
+  set(USE_THREAD 0)
+endif ()
+
+if (DEFINED USE_THREAD)
+  if (NOT ${USE_THREAD})
+    unset(SMP)
+  else ()
+    set(SMP 1)
+  endif ()
+else ()
+  # N.B. this is NUM_THREAD in Makefile.system which is probably a bug -hpa
+  if (${NUM_THREADS} EQUALS 1)
+    unset(SMP)
+  else ()
+    set(SMP 1)
+  endif ()
+endif ()
+
+if (${SMP})
+  message("SMP enabled.")
+endif ()
+
+if (NOT DEFINED NEED_PIC)
+  set(NEED_PIC 1)
+endif ()
+
+# TODO: I think CMake should be handling all this stuff -hpa
+unset(ARFLAGS)
+set(CPP "${COMPILER} -E")
+set(AR "${CROSS_SUFFIX}ar")
+set(AS "$(CROSS_SUFFIX)as")
+set(LD "$(CROSS_SUFFIX)ld")
+set(RANLIB "$(CROSS_SUFFIX)ranlib")
+set(NM "$(CROSS_SUFFIX)nm")
+set(DLLWRAP "$(CROSS_SUFFIX)dllwrap")
+set(OBJCOPY "$(CROSS_SUFFIX)objcopy")
+set(OBJCONV "$(CROSS_SUFFIX)objconv")
+