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If you pass CFLAGS with a leading space, " " gets passed to popen and convinces
gcc to try and open a file called " ". This results in a confusing error message
like:
x86_64-pokysdk-linux-gcc: error: : No such file or directory
Avoid this by stripping empty elements out of CFLAGS.
Upstream-Status: Submitted [https://github.com/besser82/libxcrypt/pull/126]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Index: a/build-aux/compute-symver-floor
===================================================================
--- a/build-aux/compute-symver-floor
+++ b/build-aux/compute-symver-floor
@@ -36,6 +36,8 @@ sub preprocessor_check {
die "C compiler not available\n" unless @CC;
@CFLAGS = sh_split($ENV{CFLAGS} // q{});
+ # Remove empty elements, particularly leading ones which cause issues with popen below
+ @CFLAGS = grep {$_} @CFLAGS;
# We call ensure_C_locale here, not from the main section,
# because this sub might not get called at all, in which
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