coadde wrote:

Add cross-compiling support to build multiple architectures without need extra dependencies

• support cross-compiling configuration
• no need extra dependencies like libretools-mips64el
• no need extra steps to build and upload packages
• easy to use libremakepkg/librestage/librerelease

https://labs.parabola.nu/issues/787

• CC and CPP (for native-gcc, crosscompiling-gcc and clang support)
• TARCH (for package-tarball build [*-${TARCH}.pkg.tar.xz])
• CTARGET (for cross-compiling compilation):

example - (crosscompiling_build-mips64el):

#########################################################################
# ARCHITECTURE, COMPILE FLAGS
#########################################################################
#
CC=mips64el-unknown-linux-gnu-gcc
CPP=mips64el-unknown-linux-gnu-g++
CARCH="x86_64" 
TARCH="mips64el" 
CHOST="x86_64-unknown-linux-gnu" 
CTARGET="mips64el-unknown-linux-gnu" 

#-- Compiler and Linker Flags
# -march (or -mcpu) builds exclusively for an architecture
# -mtune optimizes for an architecture, but builds for whole processor family
CPPFLAGS="-D_FORTIFY_SOURCE=2" 
CFLAGS="-march=mips64el -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4" 
CXXFLAGS="-march=mips64el -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4" 
LDFLAGS="-Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu" 
#-- Make Flags: change this for DistCC/SMP systems
MAKEFLAGS="-j4" 
#-- Debugging flags
DEBUG_CFLAGS="-g -fvar-tracking-assignments" 
DEBUG_CXXFLAGS="-g -fvar-tracking-assignments" 

example - (native_build-x86_64):

#########################################################################
# ARCHITECTURE, COMPILE FLAGS
#########################################################################
#
CC=gcc
#CC=clang
CPP=g++
#CPP=clang++
CARCH="x86_64" 
TARCH="${CARCH}" 
CHOST="x86_64-unknown-linux-gnu" 
CTARGET="${CHOST}" 

#-- Compiler and Linker Flags
# -march (or -mcpu) builds exclusively for an architecture
# -mtune optimizes for an architecture, but builds for whole processor family
CPPFLAGS="-D_FORTIFY_SOURCE=2" 
CFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4" 
CXXFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4" 
LDFLAGS="-Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu" 
#-- Make Flags: change this for DistCC/SMP systems
MAKEFLAGS="-j4" 
#-- Debugging flags
DEBUG_CFLAGS="-g -fvar-tracking-assignments" 
DEBUG_CXXFLAGS="-g -fvar-tracking-assignments" 

yes