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#!/bin/bash
#
# Compiler detection
# Sets:
# CC, CXX, CFLAGS, CPPFLAGS, LDFLAGS, ARFLAGS, PKG_CONFIG, INSTALL, MBITS
mkl_require host
function checks {
# C compiler
mkl_meta_set "ccenv" "name" "C compiler from CC env"
if ! mkl_command_check "ccenv" "WITH_CC" cont "$CC --version"; then
if mkl_command_check "gcc" "WITH_GCC" cont "gcc --version"; then
CC=gcc
elif mkl_command_check "clang" "WITH_CLANG" cont "clang --version"; then
CC=clang
elif mkl_command_check "cc" "WITH_CC" fail "cc --version"; then
CC=cc
fi
fi
export CC="${CC}"
mkl_mkvar_set CC CC "$CC"
if [[ $MKL_CC_WANT_CXX == 1 ]]; then
# C++ compiler
mkl_meta_set "cxxenv" "name" "C++ compiler from CXX env"
if ! mkl_command_check "cxxenv" "WITH_CXX" cont "$CXX --version" ; then
mkl_meta_set "gxx" "name" "C++ compiler (g++)"
mkl_meta_set "clangxx" "name" "C++ compiler (clang++)"
mkl_meta_set "cxx" "name" "C++ compiler (c++)"
if mkl_command_check "gxx" "WITH_GXX" cont "g++ --version"; then
CXX=g++
elif mkl_command_check "clangxx" "WITH_CLANGXX" cont "clang++ --version"; then
CXX=clang++
elif mkl_command_check "cxx" "WITH_CXX" fail "c++ --version"; then
CXX=c++
fi
fi
export CXX="${CXX}"
mkl_mkvar_set "CXX" CXX "$CXX"
fi
# Handle machine bits, if specified.
if [[ ! -z "$MBITS" ]]; then
mkl_meta_set mbits_m name "mbits compiler flag (-m$MBITS)"
if mkl_compile_check mbits_m "" fail CC "-m$MBITS"; then
mkl_mkvar_append CPPFLAGS CPPFLAGS "-m$MBITS"
mkl_mkvar_append LDFLAGS LDFLAGS "-m$MBITS"
fi
if [[ -z "$ARFLAGS" && $MBITS == 64 && $MKL_DISTRO == "sunos" ]]; then
# Turn on 64-bit archives on SunOS
mkl_mkvar_append ARFLAGS ARFLAGS "S"
fi
fi
# Provide prefix and checks for various other build tools.
local t=
for t in LD:ld NM:nm OBJDUMP:objdump STRIP:strip LIBTOOL:libtool RANLIB:ranlib ; do
local tenv=${t%:*}
t=${t#*:}
local tval="${!tenv}"
[[ -z $tval ]] && tval="$t"
if mkl_prog_check "$t" "" disable "$tval" ; then
if [[ $tval != ${!tenv} ]]; then
export "$tenv"="$tval"
fi
mkl_mkvar_set $tenv $tenv "$tval"
fi
done
# Compiler and linker flags
[[ ! -z $CFLAGS ]] && mkl_mkvar_set "CFLAGS" "CFLAGS" "$CFLAGS"
[[ ! -z $CPPFLAGS ]] && mkl_mkvar_set "CPPFLAGS" "CPPFLAGS" "$CPPFLAGS"
[[ ! -z $CXXFLAGS ]] && mkl_mkvar_set "CXXFLAGS" "CXXFLAGS" "$CXXFLAGS"
[[ ! -z $LDFLAGS ]] && mkl_mkvar_set "LDFLAGS" "LDFLAGS" "$LDFLAGS"
[[ ! -z $ARFLAGS ]] && mkl_mkvar_set "ARFLAGS" "ARFLAGS" "$ARFLAGS"
if [[ $MKL_NO_DEBUG_SYMBOLS != "y" ]]; then
# Add debug symbol flag (-g)
# OSX 10.9 requires -gstrict-dwarf for some reason.
mkl_meta_set cc_g_dwarf name "debug symbols compiler flag (-g...)"
if [[ $MKL_DISTRO == "osx" ]]; then
if mkl_compile_check cc_g_dwarf "" cont CC "-gstrict-dwarf"; then
mkl_mkvar_append CPPFLAGS CPPFLAGS "-gstrict-dwarf"
else
mkl_mkvar_append CPPFLAGS CPPFLAGS "-g"
fi
else
mkl_mkvar_append CPPFLAGS CPPFLAGS "-g"
fi
fi
# pkg-config
if [ -z "$PKG_CONFIG" ]; then
PKG_CONFIG=pkg-config
fi
if mkl_command_check "pkgconfig" "WITH_PKGCONFIG" cont "$PKG_CONFIG --version"; then
export PKG_CONFIG
fi
mkl_mkvar_set "pkgconfig" PKG_CONFIG $PKG_CONFIG
[[ ! -z "$append_PKG_CONFIG_PATH" ]] && mkl_env_append PKG_CONFIG_PATH "$append_PKG_CONFIG_PATH" ":"
# install
if [ -z "$INSTALL" ]; then
if [[ $MKL_DISTRO == "sunos" ]]; then
mkl_meta_set ginstall name "GNU install"
if mkl_command_check ginstall "" ignore "ginstall --version"; then
INSTALL=$(which ginstall)
else
INSTALL=$(which install)
fi
else
INSTALL=$(which install)
fi
fi
if mkl_command_check "install" "WITH_INSTALL" cont "$INSTALL --version"; then
export INSTALL
fi
mkl_mkvar_set "install" INSTALL $INSTALL
# Enable profiling if desired
if [[ $WITH_PROFILING == y ]]; then
mkl_allvar_set "" "WITH_PROFILING" "y"
mkl_mkvar_append CPPFLAGS CPPFLAGS "-pg"
mkl_mkvar_append LDFLAGS LDFLAGS "-pg"
fi
# Optimization
if [[ $WITHOUT_OPTIMIZATION == n ]]; then
mkl_mkvar_append CPPFLAGS CPPFLAGS "-O2"
else
mkl_mkvar_append CPPFLAGS CPPFLAGS "-O0"
fi
# Static linking
if [[ $WITH_STATIC_LINKING == y ]]; then
# LDFLAGS_STATIC is the LDFLAGS needed to enable static linking
# of sub-sequent libraries, while
# LDFLAGS_DYNAMIC is the LDFLAGS needed to enable dynamic linking.
if [[ $MKL_DISTRO != "osx" ]]; then
mkl_mkvar_set staticlinking LDFLAGS_STATIC "-Wl,-Bstatic"
mkl_mkvar_set staticlinking LDFLAGS_DYNAMIC "-Wl,-Bdynamic"
mkl_mkvar_set staticlinking HAS_LDFLAGS_STATIC y
else
# OSX linker can't enable/disable static linking so we'll
# need to find the .a through STATIC_LIB_libname env var
mkl_mkvar_set staticlinking HAS_LDFLAGS_STATIC n
# libtool -static supported
mkl_mkvar_set staticlinking HAS_LIBTOOL_STATIC y
fi
fi
# Check for GNU ar (which has the -M option)
mkl_meta_set "gnuar" "name" "GNU ar"
mkl_command_check "gnuar" "HAS_GNU_AR" disable \
"ar -V 2>/dev/null | grep -q GNU"
}
mkl_option "Compiler" "env:CC" "--cc=CC" "Build using C compiler CC" "\$CC"
mkl_option "Compiler" "env:CXX" "--cxx=CXX" "Build using C++ compiler CXX" "\$CXX"
mkl_option "Compiler" "ARCH" "--arch=ARCH" "Build for architecture" "$(uname -m)"
mkl_option "Compiler" "CPU" "--cpu=CPU" "Build and optimize for specific CPU" "generic"
mkl_option "Compiler" "MBITS" "--mbits=BITS" "Machine bits (32 or 64)" ""
for n in CFLAGS CPPFLAGS CXXFLAGS LDFLAGS ARFLAGS; do
mkl_option "Compiler" "mk:$n" "--$n=$n" "Add $n flags"
done
mkl_option "Compiler" "env:append_PKG_CONFIG_PATH" "--pkg-config-path=EXTRA_PATHS" "Extra paths for pkg-config"
mkl_option "Compiler" "WITH_PROFILING" "--enable-profiling" "Enable profiling"
mkl_option "Compiler" "WITH_STATIC_LINKING" "--enable-static" "Enable static linking"
mkl_option "Compiler" "WITHOUT_OPTIMIZATION" "--disable-optimization" "Disable optimization flag to compiler" "n"
mkl_option "Compiler" "env:MKL_NO_DEBUG_SYMBOLS" "--disable-debug-symbols" "Disable debugging symbols" "n"
mkl_option "Compiler" "env:MKL_WANT_WERROR" "--enable-werror" "Enable compiler warnings as errors" "n"
mkl_option "Compiler" "WITH_STRIP" "--enable-strip" "Strip libraries when installing" "n"
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