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authorJean-Sébastien Pédron <[email protected]>2009-12-14 23:04:00 +0100
committerBjörn Gustavsson <[email protected]>2011-02-18 12:20:41 +0100
commitdd3e666c5114f81c9518e9f5ba14959ced079ab6 (patch)
tree87b38ff7f2c660e5426c371fae6dc66064e1fd77 /erts/etc
parentab1c28eadc968d8475ce42a97b2ae143590d5cc1 (diff)
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Add dependencies Makefile generation to erlc(1) and compile(3)
This is useful when a project is built with Makefiles and erlc(1) instead of EMakefiles. Tracking dependencies by hand is error-prone and it becomes painful when using external application headers like EUnit's one. A dependencies Makefile will look like this: module.beam: module.erl \ /usr/local/lib/erlang/lib/eunit-2.1.4/include/eunit.hrl \ header.hrl When included in the main Makefile, 'module' will be recompiled only when needed. GCC offers the same feature and new erlc(1) options are compatible with it. More informations at: http://wiki.github.com/dumbbell/otp/dependencies-makefile
Diffstat (limited to 'erts/etc')
-rw-r--r--erts/etc/common/erlc.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/erts/etc/common/erlc.c b/erts/etc/common/erlc.c
index cd137435d1..b76a2caf91 100644
--- a/erts/etc/common/erlc.c
+++ b/erts/etc/common/erlc.c
@@ -28,6 +28,7 @@
#include <winbase.h>
/* FIXE ME config_win32.h? */
#define HAVE_STRERROR 1
+#define snprintf _snprintf
#endif
#include <ctype.h>
@@ -260,6 +261,95 @@ main(int argc, char** argv)
case 'I':
PUSH2("@i", process_opt(&argc, &argv, 0));
break;
+ case 'M':
+ {
+ char *buf, *key, *val;
+ size_t buf_len;
+
+ if (argv[1][2] == '\0') { /* -M */
+ /* Push the following options:
+ * o 'makedep'
+ * o {makedep_output, standard_io}
+ */
+ buf = strsave("makedep");
+ PUSH2("@option", buf);
+
+ key = "makedep_output";
+ val = "standard_io";
+ buf_len = 1 + strlen(key) + 1 + strlen(val) + 1 + 1;
+ buf = emalloc(buf_len);
+ snprintf(buf, buf_len, "{%s,%s}", key, val);
+ PUSH2("@option", buf);
+ } else if (argv[1][3] == '\0') {
+ switch(argv[1][2]) {
+ case 'D': /* -MD */
+ /* Push the following options:
+ * o 'makedep'
+ */
+ buf = strsave("makedep");
+ PUSH2("@option", buf);
+ break;
+ case 'F': /* -MF <file> */
+ /* Push the following options:
+ * o 'makedep'
+ * o {makedep_output, <file>}
+ */
+ buf = strsave("makedep");
+ PUSH2("@option", buf);
+
+ key = "makedep_output";
+ val = process_opt(&argc, &argv, 1);
+ buf_len = 1 + strlen(key) + 2 + strlen(val) + 2 + 1;
+ buf = emalloc(buf_len);
+ snprintf(buf, buf_len, "{%s,\"%s\"}", key, val);
+ PUSH2("@option", buf);
+ break;
+ case 'T': /* -MT <target> */
+ /* Push the following options:
+ * o {makedep_target, <target>}
+ */
+ key = "makedep_target";
+ val = process_opt(&argc, &argv, 1);
+ buf_len = 1 + strlen(key) + 2 + strlen(val) + 2 + 1;
+ buf = emalloc(buf_len);
+ snprintf(buf, buf_len, "{%s,\"%s\"}", key, val);
+ PUSH2("@option", buf);
+ break;
+ case 'Q': /* -MQ <target> */
+ /* Push the following options:
+ * o {makedep_target, <target>}
+ * o makedep_quote_target
+ */
+ key = "makedep_target";
+ val = process_opt(&argc, &argv, 1);
+ buf_len = 1 + strlen(key) + 2 + strlen(val) + 2 + 1;
+ buf = emalloc(buf_len);
+ snprintf(buf, buf_len, "{%s,\"%s\"}", key, val);
+ PUSH2("@option", buf);
+
+ buf = strsave("makedep_quote_target");
+ PUSH2("@option", buf);
+ break;
+ case 'G': /* -MG */
+ /* Push the following options:
+ * o makedep_add_missing
+ */
+ buf = strsave("makedep_add_missing");
+ PUSH2("@option", buf);
+ break;
+ case 'P': /* -MP */
+ /* Push the following options:
+ * o makedep_phony
+ */
+ buf = strsave("makedep_add_missing");
+ PUSH2("@option", buf);
+ break;
+ default:
+ goto error;
+ }
+ }
+ }
+ break;
case 'o':
PUSH2("@outdir", process_opt(&argc, &argv, 0));
break;
@@ -561,6 +651,15 @@ usage(void)
{"-hybrid", "compile using hybrid-heap emulator"},
{"-help", "shows this help text"},
{"-I path", "where to search for include files"},
+ {"-M", "generate a rule for make(1) describing the dependencies"},
+ {"-MF file", "write the dependencies to 'file'"},
+ {"-MT target", "change the target of the rule emitted by dependency "
+ "generation"},
+ {"-MQ target", "same as -MT but quote characters special to make(1)"},
+ {"-MG", "consider missing headers as generated files and add them to "
+ "the dependencies"},
+ {"-MP", "add a phony target for each dependency"},
+ {"-MD", "same as -M -MT file (with default 'file')"},
{"-o name", "name output directory or file"},
{"-pa path", "add path to the front of Erlang's code path"},
{"-pz path", "add path to the end of Erlang's code path"},