patches/mpc/0.8.1/100-fix-build-with-mpfr-3_0_9.diff
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Nov 23 21:35:28 2010 +0100 (2010-11-23)
branch1.9
changeset 2198 6d909657dbdf
permissions -rw-r--r--
scripts/xldd: better find sysroot with old gcc

Only starting with 4.4 does gcc have a -print-sysroot option.
For 4.3 or before, we have to play some tricks:
- ask gcc where libc.so is,
(we expect it in ${sysroot}/usr/lib/libc.so)
- trim /usr/lib/libc.so from the result

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from aa2305c5b2a57fbcda9a1b5bb5fb3a476ac49a13)
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--- trunk/src/acos.c	2009/12/08 16:49:43	733
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+++ trunk/src/acos.c	2009/12/09 20:51:38	734
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@@ -188,10 +188,7 @@
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   else
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     rnd_im = rnd_im == GMP_RNDU ? GMP_RNDD
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       : rnd_im == GMP_RNDD ? GMP_RNDU
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-#if MPFR_VERSION_MAJOR >= 3
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-      : rnd_im == GMP_RNDA ? GMP_RNDZ
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-#endif
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-      : rnd_im;
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+      : rnd_im; /* both RNDZ and RNDA map to themselves for -asin(z) */
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   rnd1 = RNDC(GMP_RNDN, rnd_im);
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   mpfr_init2 (pi_over_2, p);
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   for (;;)