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Build with Clang on OpenBSD

Browse source 
This is the default compiler starting with OpenBSD 6.2, and has been
installed by default on OpenBSD since 6.0.
This commit is contained in:
Alex Arslan 2018-04-06 14:04:45 -07:00
parent b7b3b4bc31
commit bf188aeb23
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GPG key ID: EC409F3AF54AD659
2 changed files with 6 additions and 15 deletions
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7
Make.inc
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@ -24,12 +24,7 @@ endif
USEGCC = 1 USEGCC = 1
USECLANG = 0 USECLANG = 0
ifeq ($(OS), Darwin) ifneq (,$(findstring $(OS),Darwin FreeBSD OpenBSD))
USEGCC = 0
USECLANG = 1
endif
ifeq ($(OS), FreeBSD)
USEGCC = 0 USEGCC = 0
USECLANG = 1 USECLANG = 1
endif endif

14
README.md
View file

@ -16,24 +16,20 @@ consistently across compilers and operating systems, and in 32-bit and
OpenLibm builds on Linux, Mac OS X, Windows, FreeBSD, OpenBSD, and DragonFly BSD. OpenLibm builds on Linux, Mac OS X, Windows, FreeBSD, OpenBSD, and DragonFly BSD.
It builds with both GCC and clang. Although largely tested and widely It builds with both GCC and clang. Although largely tested and widely
used on x86 architectures, openlibm also supports ARM and used on x86 architectures, OpenLibm also supports ARM and
powerPC. PowerPC.
## Build instructions ## Build instructions
1. Use `make` to build OpenLibm. 1. Use GNU Make to build OpenLibm. This is `make` on most systems, but `gmake` on BSDs.
2. Use `make USEGCC=1` to build with GCC. This is the default on 2. Use `make USEGCC=1` to build with GCC. This is the default on
Linux and Windows. Linux and Windows.
3. Use `make USECLANG=1` to build with clang. This is the default on OS X 3. Use `make USECLANG=1` to build with clang. This is the default on OS X, FreeBSD,
and FreeBSD. and OpenBSD.
4. Architectures are auto-detected. Use `make ARCH=i386` to force a 4. Architectures are auto-detected. Use `make ARCH=i386` to force a
build for i386. Other supported architectures are i486, i586, and build for i386. Other supported architectures are i486, i586, and
i686. GCC 4.8 is the minimum requirement for correct codegen on i686. GCC 4.8 is the minimum requirement for correct codegen on
older 32-bit architectures. older 32-bit architectures.
5. On OpenBSD, you need to install GNU Make (port name: `gmake`) and a recent
version of `gcc` (tested: 4.9.2), as the default version provided by OpenBSD
is too old (4.2.1). If you use OpenBSD's port system for this (port name:
`gcc`), run `make CC=egcc` to force Make to use the newer `gcc`.
## Acknowledgements ## Acknowledgements