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31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
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>From bb02d8426a9a279df76376313349c17774030753 Mon Sep 17 00:00:00 2001
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From: DRC <information@virtualgl.org>
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Date: Tue, 26 Feb 2013 04:01:36 -0600
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Subject: [PATCH 3/4] We need to unset CMAKE_REQUIRED_LIBRARIES after checking
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for the libpng functions. Otherwise, under certain circumstances (known to
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be an issue when building on OS X with the in-tree libpng implementation),
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the scandir() function check will fail, leaving HAVE_SCANDIR unset, and the
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build will subsequently fail.
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---
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CMakeLists.txt | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index cae895e..0984aae 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -210,6 +210,9 @@ if(LIB_png)
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endif(LIB_png)
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CHECK_FUNCTION_EXISTS(png_get_valid HAVE_PNG_GET_VALID)
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CHECK_FUNCTION_EXISTS(png_set_tRNS_to_alpha HAVE_PNG_SET_TRNS_TO_ALPHA)
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+if(LIB_png)
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+ set(CMAKE_REQUIRED_LIBRARIES "")
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+endif(LIB_png)
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CHECK_FUNCTION_EXISTS(scandir HAVE_SCANDIR)
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CHECK_FUNCTION_EXISTS(snprintf HAVE_SNPRINTF)
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--
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1.8.1.3
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