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Fix math library finding in CMake.

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BUG=webp:396

Change-Id: I8ca35573c242cba24f1e82997b4fb289a48a3005
This commit is contained in:
Vincent Rabaud 2018-09-03 10:34:20 +02:00
parent de08d72741
commit d71df4e2ee
1 changed files with 13 additions and 4 deletions
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17
cmake/deps.cmake
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@ -54,10 +54,19 @@ set(LT_OBJDIR ".libs/")
find_package(OpenGL) find_package(OpenGL)
set(WEBP_HAVE_GL ${OPENGL_FOUND}) set(WEBP_HAVE_GL ${OPENGL_FOUND})
# Find the standard C math library. # Check if we need to link to the C math library.
find_library(MATH_LIBRARY NAMES m) # We do not look for it as it is not found when
if(MATH_LIBRARY) # cross-compiling, while it is here.
list(APPEND WEBP_DEP_LIBRARIES ${MATH_LIBRARY}) check_c_source_compiles("
#include <cmath>
int main(void) {
return std::pow(2, 2.5);
}
"
HAVE_MATH_LIBRARY
)
if(NOT HAVE_MATH_LIBRARY)
list(APPEND WEBP_DEP_LIBRARIES m)
endif() endif()
# Find the standard image libraries. # Find the standard image libraries.