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Eliminate "which" dependency in Linux makefile.

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This commit is contained in:
Adam Ierymenko 2015-06-02 16:29:23 -07:00
parent 9d49e8f237
commit 65999611d7
2 changed files with 4 additions and 4 deletions
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4
README.md
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@ -14,8 +14,8 @@ Visit [ZeroTier's site](https://www.zerotier.com/) for more information. You can
For Mac, Linux, and BSD, just type "make" (or "gmake" on BSD). You won't need much installed; here are the requirements for various platforms:
* Mac: Xcode command line tools, and [Packages](http://s.sudre.free.fr/Software/Packages/about.html) if you want to build an OSX .pkg installer ("make mac-dist-pkg"). It should build on OSX 10.7 or newer.
* Linux: the 'which' command, which is used to auto-detect whether to use the clang or the gcc compiler. (Clang is preferred if it's available, since it usually yields smaller and slightly faster binaries.)
* FreeBSD (and other BSD): C++ compiler (g++ usually) and GNU make (gmake).
* Linux: gcc/g++ or clang/clang++ (Makefile will use clang by default if available.)
* FreeBSD (and other BSD): C++ compiler (G++ usually) and GNU make (gmake).
Each supported platform has its own *make-XXX.mk* file that contains the actual make rules for the platform. The right .mk file is included by the main Makefile based on the GNU make *OSTYPE* variable. Take a look at the .mk file for your platform for other targets, debug build rules, etc.

4
make-linux.mk
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@ -1,6 +1,6 @@
# Pick clang or gcc, with preference for clang
CC=$(shell which clang gcc cc 2>/dev/null | head -n 1)
CXX=$(shell which clang++ g++ c++ 2>/dev/null | head -n 1)
CC=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
CXX=$(shell if [ -e /usr/bin/clang++ ]; then echo clang++; else echo g++; fi)
INCLUDES=
DEFS=