28 lines
1.3 KiB
Plaintext
28 lines
1.3 KiB
Plaintext
$OpenBSD: patch-cmake_Modules_DefineCompilerFlags_cmake,v 1.1 2011/09/10 11:56:42 naddy Exp $
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Check for compiler flags not available with gcc < 4.
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--- cmake/Modules/DefineCompilerFlags.cmake.orig Fri Sep 9 21:36:39 2011
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+++ cmake/Modules/DefineCompilerFlags.cmake Fri Sep 9 21:40:29 2011
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@@ -10,9 +10,19 @@ if (UNIX AND NOT WIN32)
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if (${CMAKE_C_COMPILER_ID} MATCHES GNU)
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# add -Wconversion ?
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -pedantic -pedantic-errors")
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- set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wshadow -Wmissing-prototypes -Wdeclaration-after-statement")
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+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wshadow -Wmissing-prototypes")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wunused -Wfloat-equal -Wpointer-arith -Wwrite-strings -Wformat-security")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wmissing-format-attribute")
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+
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+ check_c_compiler_flag("-Wextra" WITH_WEXTRA)
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+ if (WITH_WEXTRA)
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+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra")
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+ endif (WITH_WEXTRA)
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+
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+ check_c_compiler_flag("-Wdeclaration-after-statement" WITH_WDECL)
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+ if (WITH_WDECL)
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+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wdeclaration-after-statement")
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+ endif (WITH_WDECL)
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# with -fPIC
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check_c_compiler_flag("-fPIC" WITH_FPIC)
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