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Add weak alias for MAIN__
https://bugs.gentoo.org/show_bug.cgi?id=421975
https://bugs.gentoo.org/show_bug.cgi?id=433782
https://groups.google.com/forum/#!msg/comp.os.linux.development.apps/41siJKfcJ78/iIcRfZ4y9G8J
Patch written by Chris Reffett <creffett@gentoo.org>
and Kacper Kowalik <xarthisius@gentoo.org>
--- a/makefile.u
+++ b/makefile.u
@@ -27,7 +27,7 @@
## If your system does not have the x86_64-pc-linux-gnu-ld command, comment out
## or remove both the x86_64-pc-linux-gnu-ld and mv lines above.
-MISC = f77vers.o i77vers.o main.o s_rnge.o abort_.o exit_.o getarg_.o iargc_.o\
+MISC = f77vers.o i77vers.o main.o main_foo.o s_rnge.o abort_.o exit_.o getarg_.o iargc_.o\
getenv_.o signal_.o s_stop.o s_paus.o system_.o cabs.o ctype.o\
derf_.o derfc_.o erf_.o erfc_.o sig_die.o uninit.o
POW = pow_ci.o pow_dd.o pow_di.o pow_hh.o pow_ii.o pow_ri.o pow_zi.o pow_zz.o
@@ -206,7 +206,7 @@
i77vers.c i_abs.c i_dim.c i_dnnt.c i_indx.c i_len.c i_mod.c \
i_nint.c i_sign.c iargc_.c iio.c ilnw.c inquire.c l_ge.c l_gt.c \
l_le.c l_lt.c lbitbits.c lbitshft.c libf2c.lbc libf2c.sy lio.h \
- lread.c lwrite.c main.c makefile.sy makefile.u makefile.vc \
+ lread.c lwrite.c main.c main_foo.c makefile.sy makefile.u makefile.vc \
makefile.wat math.hvc mkfile.plan9 open.c pow_ci.c pow_dd.c \
pow_di.c pow_hh.c pow_ii.c pow_qq.c pow_ri.c pow_zi.c pow_zz.c \
qbitbits.c qbitshft.c r_abs.c r_acos.c r_asin.c r_atan.c r_atn2.c \
--- /dev/null
+++ b/main_foo.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+void missing_MAIN__ (void)
+{
+ fprintf(stderr, "The Fortran main program is missing.\n");
+ abort();
+}
+void MAIN__ (void) __attribute__ ((weak, alias("missing_MAIN__")));
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