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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2016-08-06 00:36:33 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2016-08-06 00:36:33 +0000 |
| commit | e0f69f36ea1e068cb9aa48ea0d274b98530f2488 (patch) | |
| tree | 8925fdf222aa5a7635a6eb748602b694043eafb7 /libgo/match.sh | |
| parent | d712e9a7e2ec4de5e6e9f72b85b620e719757ee3 (diff) | |
| download | gcc-e0f69f36ea1e068cb9aa48ea0d274b98530f2488.tar.gz | |
libgo: change build procedure to use build tags
Previously the libgo Makefile explicitly listed the set of files to
compile for each package. For packages that use build tags, this
required a lot of awkward automake conditionals in the Makefile.
This CL changes the build to look at the build tags in the files.
The new shell script libgo/match.sh does the matching. This required
adjusting a lot of build tags, and removing some files that are never
used. I verified that the exact same sets of files are compiled on
amd64 GNU/Linux. I also tested the build on i386 Solaris.
Writing match.sh revealed some bugs in the build tag handling that
already exists, in a slightly different form, in the gotest shell
script. This CL fixes those problems as well.
The old code used automake conditionals to handle systems that were
missing strerror_r and wait4. Rather than deal with those in Go, those
functions are now implemented in runtime/go-nosys.c when necessary, so
the Go code can simply assume that they exist.
The os testsuite looked for dir_unix.go, which was never built for gccgo
and has now been removed. I changed the testsuite to look for dir.go
instead.
Reviewed-on: https://go-review.googlesource.com/25546
From-SVN: r239189
Diffstat (limited to 'libgo/match.sh')
| -rwxr-xr-x | libgo/match.sh | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/libgo/match.sh b/libgo/match.sh new file mode 100755 index 00000000000..e415acdbc2c --- /dev/null +++ b/libgo/match.sh @@ -0,0 +1,197 @@ +#!/bin/sh + +# Copyright 2016 The Go Authors. All rights reserved. +# Use of this source code is governed by a BSD-style +# license that can be found in the LICENSE file. + +# Given a source directory, returns the non-test Go files that should +# be built for this target. This implements Go's build constraints in +# a shell script. There is similar code in testsuite/gotest. + +set -e + +unset LANG +LC_ALL=C +LC_CTYPE=C +export LC_ALL LC_CTYPE + +srcdir="" +goarch="" +goos="" +extrafiles="" +cmdlinetag="nosuchtag" +cgotag="cgo" + +for arg; do + case "x$arg" in + x--srcdir) + srcdir=$2 + shift + shift + ;; + x--srcdir=*) + srcdir=`echo $1 | sed -e 's/^--srcdir=//'` + shift + ;; + x--goarch) + goarch=$2 + shift + shift + ;; + x--goarch=*) + goarch=`echo $1 | sed -e 's/^--goarch=//'` + shift + ;; + x--goos) + goos=$2 + shift + shift + ;; + x--goos=*) + goos=`echo $1 | sed -e 's/^--goos=//'` + shift + ;; + x--extrafiles) + extrafiles=$2 + shift + shift + ;; + x--extrafiles=*) + extrafiles=`echo $1 | sed -e 's/^--extrafiles=//'` + shift + ;; + x--tag) + cmdlinetag=$2 + shift + shift + ;; + x--tag=*) + cmdlinetag=`echo $1 | sed -e 's/^--tag=//'` + shift + ;; + x--nocgo) + cgotag="nosuchtag" + shift + ;; + *) + echo 1>&2 "unknown argument $arg" + exit 1 + ;; + esac +done + +cd $srcdir + +gofiles= +for f in *.go; do + case $f in + *_test.go) + ;; + *.go) + gofiles="$gofiles $f" + ;; + esac +done + +if test "$gofiles" = ""; then + echo 1>&2 "no non-test .go files in $srcdir" + exit 1 +fi + +matched= +for f in $gofiles; do + tag1=`echo $f | sed -e 's/^.*_\([^_]*\).go$/\1/'` + tag2=`echo $f | sed -e 's/^.*_\([^_]*\)_[^_]*.go$/\1/'` + if test x$tag1 = x$f; then + tag1= + fi + if test x$tag2 = x$f; then + tag2= + fi + + case "$tag1" in + "") ;; + $goarch) ;; + $goos) ;; + android | darwin | dragonfly | freebsd | linux | nacl | netbsd | openbsd | plan9 | solaris | windows) + tag1=nonmatchingtag + ;; + 386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | m68k | ppc64 | ppc64le | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | mipso32 | mipsn32 | mipsn64 | mipso64 | ppc | s390 | s390x | sparc | sparc64) + tag1=nonmatchingtag + ;; + esac + + case "$tag2" in + "") ;; + $goarch) ;; + $goos) ;; + android | darwin | dragonfly | freebsd | linux | nacl | netbsd | openbsd | plan9 | solaris | windows) + tag2=nonmatchingtag + ;; + 386 | amd64 | amd64p32 | arm | armbe | arm64 | arm64be | alpha | m68k | ppc64 | ppc64le | mips | mipsle | mips64 | mips64le | mips64p32 | mips64p32le | mipso32 | mipsn32 | mipsn64 | mipso64 | ppc | s390 | s390x | sparc | sparc64) + tag2=nonmatchingtag + ;; + esac + + if test x$tag1 != xnonmatchingtag -a x$tag2 != xnonmatchingtag; then + # Pipe through cat so that `set -e` doesn't affect fgrep. + tags=`sed '/^package /q' < $f | grep '^// +build ' | cat` + omatch=true + first=true + match=false + for tag in $tags; do + case $tag in + "//") + ;; + "+build") + if test "$first" = "true"; then + first=false + elif test "$match" = "false"; then + omatch=false + fi + match=false + ;; + $goos | $goarch | $cgotag | $cmdlinetag) + match=true + ;; + "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag) + ;; + *,*) + cmatch=true + for ctag in `echo $tag | sed -e 's/,/ /g'`; do + case $ctag in + $goos | $goarch | $cgotag | $cmdlinetag) + ;; + "!"$goos | "!"$goarch | "!"$cgotag | "!"$cmdlinetag) + cmatch=false + ;; + "!"*) + ;; + *) + cmatch=false + ;; + esac + done + if test "$cmatch" = "true"; then + match=true + fi + ;; + "!"*) + match=true + ;; + esac + done + + if test "$match" = "false" -a "$first" = "false"; then + omatch=false + fi + + if test "$omatch" = "true"; then + matched="$matched $srcdir/$f" + fi + fi +done + +echo $matched $extrafiles + +exit 0 |