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commit 6fade5a6044b7102758f4ca66c8715ebc12a6306
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Author: Martin Liska <mliska@suse.cz>
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Date: Thu Oct 22 14:07:29 2020 +0200
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LTO: check that make command works
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gcc/ChangeLog:
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PR lto/97524
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* lto-wrapper.c (make_exists): New function.
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(run_gcc): Use it to check that make is present and working
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for parallel execution.
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--- gcc/lto-wrapper.c
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+++ gcc/lto-wrapper.c
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@@ -1321,6 +1321,26 @@ jobserver_active_p (void)
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&& is_valid_fd (wfd));
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}
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+/* Test that a make command is present and working, return true if so. */
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+
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+static bool
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+make_exists (void)
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+{
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+ const char *make = "make";
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+ char **make_argv = buildargv (getenv ("MAKE"));
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+ if (make_argv)
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+ make = make_argv[0];
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+ const char *make_args[] = {make, "--version", NULL};
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+
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+ int exit_status = 0;
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+ int err = 0;
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+ const char *errmsg
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+ = pex_one (PEX_SEARCH, make_args[0], CONST_CAST (char **, make_args),
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+ "make", NULL, NULL, &exit_status, &err;;
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+ freeargv (make_argv);
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+ return errmsg == NULL && exit_status == 0 && err == 0;
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+}
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+
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/* Execute gcc. ARGC is the number of arguments. ARGV contains the arguments. */
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static void
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@@ -1541,6 +1561,10 @@ run_gcc (unsigned argc, char *argv[])
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jobserver = 1;
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}
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+ /* We need make working for a parallel execution. */
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+ if (parallel && !make_exists ())
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+ parallel = 0;
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+
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if (linker_output)
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{
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char *output_dir, *base, *name;
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