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authorBjörn Gustavsson <bjorn@erlang.org>2011-06-29 08:09:21 +0200
committerBjörn Gustavsson <bjorn@erlang.org>2011-08-08 11:59:11 +0200
commit8d3a2dfa646ab2ceb41905c673adb15e57bf9cfd (patch)
treeb27c6d43f8c61eab0069d6f6466cee6d78d149d5 /lib/asn1/c_src
parent13cc114325d31626a84fbecbe07bb0f76c3726cf (diff)
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*/c_src/Makefile*: Support parallel make
Create directories first, not within implicit rules. If two 'install' instances runs at the same time attempting to create a directory, one of them may fail with an "File exists" error. I tried to use order-only prerequisites to create the directories, but run into two problems: First, order-only prerequisites are only implemented in Make 3.80 and later. Second, on a computer running Solaris/Intel 2.8 (with Make 3.80), order-only prerequisites seemed to work like ordinary prerequisites, causing targets to be re-built if the timestamp for the directory changed. Therefore, using a shell command to run mkdir seems to be the more portable solution.
Diffstat (limited to 'lib/asn1/c_src')
-rw-r--r--lib/asn1/c_src/Makefile12
1 files changed, 3 insertions, 9 deletions
diff --git a/lib/asn1/c_src/Makefile b/lib/asn1/c_src/Makefile
index 9e9cb18524..2e3c61dc1d 100644
--- a/lib/asn1/c_src/Makefile
+++ b/lib/asn1/c_src/Makefile
@@ -87,7 +87,9 @@ endif
# Targets
# ----------------------------------------------------
-opt: $(OBJDIR) $(LIBDIR) $(SHARED_OBJ_FILES)
+_create_dirs := $(shell mkdir -p $(OBJDIR) $(LIBDIR))
+
+opt: $(SHARED_OBJ_FILES)
debug: opt
@@ -109,14 +111,6 @@ $(OBJ_FILES): $(C_FILES)
$(SHARED_OBJ_FILES): $(OBJ_FILES)
$(LD) $(LDFLAGS) $(LD_INCL_EI) -o $(SHARED_OBJ_FILES) $(OBJ_FILES) $(LD_EI) $(CLIB_FLAGS) $(LIBS)
-$(LIBDIR):
- -mkdir -p $(LIBDIR)
-
-$(OBJDIR):
- -mkdir -p $(OBJDIR)
-
-
-
# ----------------------------------------------------
# Release Target
# ----------------------------------------------------