oasis

commit: 224b5fdbf9659815321b9bd94de7839d500dd760
parent 7c4274cfb305a52296f0f03113f9bdabf3cd0aa4
Author: Michael Forney <mforney@mforney.org>
Date:   Mon, 21 Aug 2017 00:53:08 -0700

Add mechanism to probe for toolchain features

Diffstat:
M
gen.lua
1
+
A
probe/gen.lua
3
+++
M
rules.ninja
3
+++
A
scripts/probe.rc
7
+++++++

4 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/gen.lua b/gen.lua
@@ -20,6 +20,7 @@ include 'rules.ninja'
 
 toolchain 'target'
 
+subgen 'probe'
 subgen 'pkg'
 subgen 'src'
 
diff --git a/probe/gen.lua b/probe/gen.lua
@@ -0,0 +1,3 @@
+local function probe(var)
+	build('probe', '$outdir/'..var, '$dir/'..var, {var=var})
+end
diff --git a/rules.ninja b/rules.ninja
@@ -39,6 +39,9 @@ rule mc
 rule muse
   command = muse $museflags -o $out $in
 
+rule probe
+  command = rc ./scripts/probe.rc $var $cc $cflags $ldflags -o /dev/null -x c $in >$out.tmp && mv $out.tmp $out
+
 # misc tools
 rule touch
   command = touch $out
diff --git a/scripts/probe.rc b/scripts/probe.rc
@@ -0,0 +1,7 @@
+flag e +
+
+var=$1
+shift
+if($* >[2]/dev/null)
+	echo '#define '$var' 1'
+status=()