From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 1 Apr 2002 06:58:31 +0000 (+0200)
Subject: added CCACHE_NOLINK option
X-Git-Tag: v1.4~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b46104d09d31da3baf856eed841cffa79acea4e;p=thirdparty%2Fccache.git

added CCACHE_NOLINK option
---

diff --git a/ccache.1 b/ccache.1
index d0e71433c..58ff795a7 100644
--- a/ccache.1
+++ b/ccache.1
@@ -139,6 +139,14 @@ If you set the environment variable
 CCACHE_NOSTATS then ccache will not update the statistics files on
 each compile\&.
 .IP 
+.IP "\fBCCACHE_NOLINK\fP" 
+If you set the environment variable
+CCACHE_NOLINK then ccache will not use hard links from the cache
+directory when creating the compiler output and will do a file copy
+instead\&. The main reason for setting this option is to avoid the
+update of the modification time on object files that are the result of
+the same compilation in a different directory\&.
+.IP 
 .IP "\fBCCACHE_NOUNIFY\fP" 
 If you set the environment variable
 CCACHE_NOUNIFY then ccache will not use the C/C++ unifier when hashing
diff --git a/ccache.c b/ccache.c
index dfd512254..abb9ec369 100644
--- a/ccache.c
+++ b/ccache.c
@@ -237,7 +237,11 @@ static void from_cache(int first)
 	utime(stderr_file, NULL);
 
 	unlink(output_file);
-	ret = link(hashname, output_file);
+	if (getenv("CCACHE_NOLINK")) {
+		ret = copy_file(hashname, output_file);
+	} else {
+		ret = link(hashname, output_file);
+	}
 
 	/* the hash file might have been deleted by some external process */
 	if (ret == -1 && errno == ENOENT) {
diff --git a/ccache.yo b/ccache.yo
index 8646cae0c..472fc7e1c 100644
--- a/ccache.yo
+++ b/ccache.yo
@@ -118,6 +118,13 @@ dit(bf(CCACHE_NOSTATS)) If you set the environment variable
 CCACHE_NOSTATS then ccache will not update the statistics files on
 each compile.
 
+dit(bf(CCACHE_NOLINK)) If you set the environment variable
+CCACHE_NOLINK then ccache will not use hard links from the cache
+directory when creating the compiler output and will do a file copy
+instead. The main reason for setting this option is to avoid the
+update of the modification time on object files that are the result of
+the same compilation in a different directory.
+
 dit(bf(CCACHE_NOUNIFY)) If you set the environment variable
 CCACHE_NOUNIFY then ccache will not use the C/C++ unifier when hashing
 the pre-processor output. The unifier is slower than a normal hash, so
diff --git a/web/ccache-man.html b/web/ccache-man.html
index b8b21aa21..be2238122 100644
--- a/web/ccache-man.html
+++ b/web/ccache-man.html
@@ -116,6 +116,12 @@ bypassing the cache completely.
 <p><p></p><dt><strong><strong>CCACHE_NOSTATS</strong></strong><dd> If you set the environment variable
 CCACHE_NOSTATS then ccache will not update the statistics files on
 each compile.
+<p><p></p><dt><strong><strong>CCACHE_NOLINK</strong></strong><dd> If you set the environment variable
+CCACHE_NOLINK then ccache will not use hard links from the cache
+directory when creating the compiler output and will do a file copy
+instead. The main reason for setting this option is to avoid the
+update of the modification time on object files that are the result of
+the same compilation in a different directory.
 <p><p></p><dt><strong><strong>CCACHE_NOUNIFY</strong></strong><dd> If you set the environment variable
 CCACHE_NOUNIFY then ccache will not use the C/C++ unifier when hashing
 the pre-processor output. The unifier is slower than a normal hash, so