From 8d3a2dfa646ab2ceb41905c673adb15e57bf9cfd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Wed, 29 Jun 2011 08:09:21 +0200 Subject: */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. --- lib/crypto/c_src/Makefile.in | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'lib/crypto/c_src') diff --git a/lib/crypto/c_src/Makefile.in b/lib/crypto/c_src/Makefile.in index 276c84d601..775e5a9b89 100644 --- a/lib/crypto/c_src/Makefile.in +++ b/lib/crypto/c_src/Makefile.in @@ -94,13 +94,9 @@ endif # Targets # ---------------------------------------------------- -debug opt valgrind: $(OBJDIR) $(LIBDIR) $(NIF_LIB) +_create_dirs := $(shell mkdir -p $(OBJDIR) $(LIBDIR)) -$(OBJDIR): - -@mkdir -p $(OBJDIR) - -$(LIBDIR): - -@mkdir -p $(LIBDIR) +debug opt valgrind: $(NIF_LIB) $(OBJDIR)/%$(TYPEMARKER).o: %.c $(INSTALL_DIR) $(OBJDIR) -- cgit v1.2.3