[!cgo] skip

# Require that CC is something that requires a PATH lookup.
# Normally, the default is gcc or clang, but if CC was set during make.bash,
# that becomes the default.
[!cc:clang] [!cc:gcc] skip 'C compiler is not gcc or clang'

env GOCACHE=$WORK/gocache  # Looking for compile flags, so need a clean cache.
[!GOOS:windows] env PATH=.:$PATH
[!GOOS:windows] chmod 0755 p/gcc p/clang
[!GOOS:windows] exists -exec p/gcc p/clang
[GOOS:windows] exists -exec p/gcc.bat p/clang.bat
! exists p/bug.txt
! go build -x
stderr '^cgo: C compiler "(clang|gcc)" not found: exec: "(clang|gcc)": cannot run executable found relative to current directory'
! exists p/bug.txt

-- go.mod --
module m

-- m.go --
package m

import _ "m/p"

-- p/p.go --
package p

// #define X 1
import "C"

-- p/gcc --
#!/bin/sh
echo ran gcc >bug.txt
-- p/clang --
#!/bin/sh
echo ran clang >bug.txt
-- p/gcc.bat --
echo ran gcc >bug.txt
-- p/clang.bat --
echo ran clang >bug.txt