[Bug-mit-scheme] [bug #40150] mit-scheme-c-9.1.1 overrides user supplied optimization CFLAGS

[Matt Birkholz]

Follow-up Comment #1, bug #40150 (project mit-scheme):

I can find only a handful of lines where CFLAGS is touched at all, mostly to
add some -Wnitpick options (admittedly *after* CFLAGS, but so what?), or
override standard optimization options when configured with --enable-debugging
(the intention?).  Perhaps line 62 is all you meant; you were so...
unspecific.  Line 62 is only executed when ${GCC} is yes, but... maybe this
patch is all you need?

diff --git a/src/microcode/achost.ac b/src/microcode/achost.ac
index 35408bb..63e45f1 100644
--- a/src/microcode/achost.ac
+++ b/src/microcode/achost.ac
@@ -59,7 +59,7 @@ if test ${GCC} = yes; then
     LDFLAGS=${SAVED_LDFLAGS}
 
     if test ${enable_debugging} = no; then
-       CFLAGS="${CFLAGS} -O3"
+       CFLAGS="-O3 ${CFLAGS}"
     else
        CFLAGS="${CFLAGS} -O0 -g -DENABLE_DEBUGGING_TOOLS"
        LDFLAGS="${LDFLAGS} -g"


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