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Added option to Cmake build allowing a custom location of Zlib to be specified. This is useful in a scenario where libpng is being built as a subproject alongside zlib by another project..

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Sam Serrels 2017-01-02 01:36:47 +00:00
parent dd8aa3e939
commit 14e885a54c
1 changed files with 9 additions and 2 deletions
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11
CMakeLists.txt
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@ -41,8 +41,15 @@ set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
# needed packages
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIR})
#Allow users to specify location of Zlib,
# Useful if zlib is being built alongside this as a sub-project
option(PNG_BUILD_ZLIB "Custom zlib Location, else find_package is used" OFF)
IF(NOT PNG_BUILD_ZLIB)
find_package(ZLIB REQUIRED)
include_directories(${ZLIB_INCLUDE_DIR})
ENDIF(NOT PNG_BUILD_ZLIB)
if(NOT WIN32)
find_library(M_LIBRARY