CMake minimum required lowered to 3.1

10 files changed, 296 insertions, 88 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 38f6132a..886e9f58 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.0)
 
-project(FLAC VERSION 1.3.2 HOMEPAGE_URL "https://www.xiph.org/flac/")
+project(FLAC VERSION 1.3.2) # HOMEPAGE_URL "https://www.xiph.org/flac/")
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
@@ -45,7 +45,7 @@ include(TestBigEndian)
 check_include_file("byteswap.h" HAVE_BYTESWAP_H)
 check_include_file("inttypes.h" HAVE_INTTYPES_H)
 check_include_file("stdint.h" HAVE_STDINT_H)
-check_include_file("x86intrin.h" HAVE_X86INTRIN_H)
+check_include_file("x86intrin.h" FLAC__HAS_X86INTRIN)
 
 check_function_exists(fseeko HAVE_FSEEKO)
 
@@ -64,19 +64,6 @@ if(HAVE_WERROR_FLAG)
     option(ENABLE_WERROR "Enable -Werror in all Makefiles" OFF)
 endif()
 
-add_compile_definitions(
-    PACKAGE_VERSION="${PROJECT_VERSION}"
-    $<$<BOOL:${HAVE_BYTESWAP_H}>:HAVE_BYTESWAP_H>
-    $<$<BOOL:${HAVE_INTTYPES_H}>:HAVE_INTTYPES_H>
-    $<$<BOOL:${HAVE_STDINT_H}>:HAVE_STDINT_H>
-    $<$<BOOL:${HAVE_FSEEKO}>:HAVE_FSEEKO>
-    $<$<BOOL:${MSVC}>:_CRT_SECURE_NO_WARNINGS>
-    CPU_IS_BIG_ENDIAN=$<BOOL:${CPU_IS_BIG_ENDIAN}>
-    CPU_IS_LITTLE_ENDIAN=$<NOT:$<BOOL:${CPU_IS_BIG_ENDIAN}>>
-    FLAC__HAS_X86INTRIN=$<BOOL:${HAVE_X86INTRIN_H}>
-    HAVE_BSWAP16=$<BOOL:${HAVE_BSWAP16}>
-    HAVE_BSWAP32=$<BOOL:${HAVE_BSWAP32}>)
-
 add_compile_options(
     $<$<BOOL:${MSVC}>:/wd4267>
     $<$<BOOL:${MSVC}>:/wd4996>
@@ -93,6 +80,18 @@ endif()
 
 include_directories("include")
 
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")
+add_definitions(-DHAVE_CONFIG_H)
+
+if(MSVC)
+    add_definitions(
+        -D_CRT_SECURE_NO_WARNINGS
+        -D_USE_MATH_DEFINES)
+endif()
+if(CMAKE_BUILD_TYPE STREQUAL Debug OR CMAKE_BUILD_TYPE STREQUAL RelWithDebInfo)
+    add_definitions(-DFLAC__OVERFLOW_DETECT)
+endif()
+
 add_subdirectory("doc")
 add_subdirectory("src")
 add_subdirectory("microbench")
@@ -103,6 +102,8 @@ if(BUILD_TESTING)
     add_subdirectory("test")
 endif()
 
+configure_file(config.cmake.h.in config.h)
+
 install(
     EXPORT targets
     DESTINATION "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake"
diff --git a/cmake/UseSystemExtensions.cmake b/cmake/UseSystemExtensions.cmake
index 4a33fd4b..5ef9b470 100644
--- a/cmake/UseSystemExtensions.cmake
+++ b/cmake/UseSystemExtensions.cmake
@@ -1,5 +1,3 @@
-cmake_minimum_required(VERSION 3.12)
-
 include(CheckCSourceCompiles)
 
 check_c_source_compiles("
@@ -63,19 +61,14 @@ check_c_source_compiles("
     int main() { return 0; }"
     DODEFINE_EXTENSIONS)
 
-add_compile_definitions(
-    _ALL_SOURCE
-    _DARWIN_C_SOURCE
-    _GNU_SOURCE
-    _POSIX_PTHREAD_SEMANTICS
-    __STDC_WANT_IEC_60559_ATTRIBS_EXT__
-    __STDC_WANT_IEC_60559_BFP_EXT__
-    __STDC_WANT_IEC_60559_DFP_EXT__
-    __STDC_WANT_IEC_60559_FUNCS_EXT__
-    __STDC_WANT_IEC_60559_TYPES_EXT__
-    __STDC_WANT_LIB_EXT2__
-    __STDC_WANT_MATH_SPEC_FUNCS__
-    _TANDEM_SOURCE
-    $<$<AND:$<BOOL:${DODEFINE_FORTIFY_SOURCE}>,$<OR:$<CONFIG:Release>,$<CONFIG:RelWithDebInfo>>>:_FORTIFY_SOURCE=2>
-    $<$<BOOL:${DODEFINE_XOPEN_SOURCE}>:_XOPEN_SOURCE=500>
-    $<$<BOOL:${DODEFINE_EXTENTIONS}>:__EXTENSIONS__>)
+add_definitions(
+    -D_DARWIN_C_SOURCE
+    -D_POSIX_PTHREAD_SEMANTICS
+    -D__STDC_WANT_IEC_60559_ATTRIBS_EXT__
+    -D__STDC_WANT_IEC_60559_BFP_EXT__
+    -D__STDC_WANT_IEC_60559_DFP_EXT__
+    -D__STDC_WANT_IEC_60559_FUNCS_EXT__
+    -D__STDC_WANT_IEC_60559_TYPES_EXT__
+    -D__STDC_WANT_LIB_EXT2__
+    -D__STDC_WANT_MATH_SPEC_FUNCS__
+    -D_TANDEM_SOURCE)
diff --git a/config.cmake.h.in b/config.cmake.h.in
new file mode 100644
index 00000000..b6c18774
--- /dev/null
+++ b/config.cmake.h.in
@@ -0,0 +1,239 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+#cmakedefine AC_APPLE_UNIVERSAL_BUILD
+
+/* Target processor is big endian. */
+#cmakedefine01 CPU_IS_BIG_ENDIAN
+
+/* Target processor is little endian. */
+#cmakedefine01 CPU_IS_LITTLE_ENDIAN
+
+/* Set FLAC__BYTES_PER_WORD to 8 (4 is the default) */
+#cmakedefine01 ENABLE_64_BIT_WORDS
+
+/* define to align allocated memory on 32-byte boundaries */
+#cmakedefine FLAC__ALIGN_MALLOC_DATA
+
+/* define if you have docbook-to-man or docbook2man */
+#cmakedefine FLAC__HAS_DOCBOOK_TO_MAN
+
+/* define if you are compiling for x86 and have the NASM assembler */
+#cmakedefine FLAC__HAS_NASM
+
+/* define if you have the ogg library */
+#cmakedefine01 OGG_FOUND
+#define FLAC__HAS_OGG OGG_FOUND
+
+/* define if compiler has __attribute__((target("cpu=power8"))) support */
+#cmakedefine FLAC__HAS_TARGET_POWER8
+
+/* define if compiler has __attribute__((target("cpu=power9"))) support */
+#cmakedefine FLAC__HAS_TARGET_POWER9
+
+/* Set to 1 if <x86intrin.h> is available. */
+#cmakedefine01 FLAC__HAS_X86INTRIN
+
+/* define if building for Darwin / MacOS X */
+#cmakedefine FLAC__SYS_DARWIN
+
+/* define if building for Linux */
+#cmakedefine FLAC__SYS_LINUX
+
+/* define to enable use of Altivec instructions */
+#cmakedefine FLAC__USE_ALTIVEC
+
+/* define to enable use of AVX instructions */
+#cmakedefine01 WITH_AVX
+#define FLAC__USE_AVX WITH_AVX
+
+/* define to enable use of VSX instructions */
+#cmakedefine FLAC__USE_VSX
+
+/* Compiler has the __builtin_bswap16 intrinsic */
+#cmakedefine01 HAVE_BSWAP16
+
+/* Compiler has the __builtin_bswap32 intrinsic */
+#cmakedefine01 HAVE_BSWAP32
+
+/* Define to 1 if you have the <byteswap.h> header file. */
+#cmakedefine HAVE_BYTESWAP_H
+
+/* define if you have clock_gettime */
+#cmakedefine HAVE_CLOCK_GETTIME
+
+/* Define to 1 if you have the <cpuid.h> header file. */
+#cmakedefine HAVE_CPUID_H
+
+/* Define to 1 if C++ supports variable-length arrays. */
+#cmakedefine HAVE_CXX_VARARRAYS
+
+/* Define to 1 if C supports variable-length arrays. */
+#cmakedefine HAVE_C_VARARRAYS
+
+/* Define to 1 if fseeko (and presumably ftello) exists and is declared. */
+#cmakedefine HAVE_FSEEKO
+
+/* Define to 1 if you have the `getopt_long' function. */
+#cmakedefine HAVE_GETOPT_LONG
+
+/* Define if you have the iconv() function and it works. */
+#cmakedefine HAVE_ICONV
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#cmakedefine01 HAVE_INTTYPES_H
+
+/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
+#cmakedefine HAVE_LANGINFO_CODESET
+
+/* lround support */
+#cmakedefine01 HAVE_LROUND
+
+/* Define to 1 if you have the <memory.h> header file. */
+#cmakedefine HAVE_MEMORY_H
+
+/* Define to 1 if the system has the type `socklen_t'. */
+#cmakedefine HAVE_SOCKLEN_T
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#cmakedefine01 HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#cmakedefine HAVE_STDLIB_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#cmakedefine HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#cmakedefine HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#cmakedefine HAVE_SYS_PARAM_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#cmakedefine HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#cmakedefine HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <termios.h> header file. */
+#cmakedefine HAVE_TERMIOS_H
+
+/* Define to 1 if typeof works with your compiler. */
+#cmakedefine HAVE_TYPEOF
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#cmakedefine HAVE_UNISTD_H
+
+/* Define to 1 if you have the <x86intrin.h> header file. */
+#cmakedefine HAVE_X86INTRIN_H
+
+/* Define as const if the declaration of iconv() needs const. */
+#cmakedefine ICONV_CONST
+
+/* Define if debugging is disabled */
+#cmakedefine NDEBUG
+
+/* Name of package */
+#cmakedefine PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#cmakedefine PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#cmakedefine PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#cmakedefine PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#cmakedefine PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#cmakedefine PACKAGE_URL
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "@PROJECT_VERSION@"
+
+/* The size of `off_t', as computed by sizeof. */
+#cmakedefine SIZEOF_OFF_T
+
+/* The size of `void*', as computed by sizeof. */
+#cmakedefine SIZEOF_VOIDP
+
+/* Define to 1 if you have the ANSI C header files. */
+#cmakedefine STDC_HEADERS
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+#define _ALL_SOURCE
+#endif
+
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#ifndef _FORTIFY_SOURCE
+#cmakedefine DODEFINE_FORTIFY_SOURCE 2
+#define _FORTIFY_SOURCE DODEFINE_FORTIFY_SOURCE
+#endif
+
+#ifndef _XOPEN_SOURCE
+#cmakedefine DODEFINE_XOPEN_SOURCE 500
+#define _XOPEN_SOURCE DODEFINE_XOPEN_SOURCE
+#endif
+
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+#cmakedefine _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+#cmakedefine _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+#cmakedefine DODEFINE_EXTENSIONS
+#define __EXTENSIONS__ DODEFINE_EXTENSIONS
+#endif
+
+
+/* Version number of package */
+#cmakedefine VERSION
+
+/* Target processor is big endian. */
+#define WORDS_BIGENDIAN CPU_IS_BIG_ENDIAN
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#cmakedefine _FILE_OFFSET_BITS
+
+/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
+#cmakedefine _LARGEFILE_SOURCE
+
+/* Define for large files, on AIX-style hosts. */
+#cmakedefine _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#cmakedefine _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#cmakedefine _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#cmakedefine _POSIX_SOURCE
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#cmakedefine inline
+#endif
+
+/* Define to __typeof__ if your compiler spells it that way. */
+#cmakedefine typeof
diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index a4e38ef9..66fa843e 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -1,3 +1,4 @@
+cmake_minimum_required(VERSION 3.1)
 find_package(Doxygen)
 
 if (NOT DOXYGEN_FOUND)
diff --git a/microbench/CMakeLists.txt b/microbench/CMakeLists.txt
index 64042059..c43814fd 100644
--- a/microbench/CMakeLists.txt
+++ b/microbench/CMakeLists.txt
@@ -5,9 +5,9 @@ endif()
 set(CMAKE_REQUIRED_LIBRARIES rt)
 check_function_exists(clock_gettime HAVE_CLOCK_GETTIME)
 
-add_compile_definitions(
-    $<$<BOOL:${HAVE_CLOCK_GETTIME}>:HAVE_CLOCK_GETTIME>
-    $<$<BOOL:${APPLE}>:FLAC__SYS_DARWIN>)
+if(APPLE)
+    add_definitions(-DFLAC__SYS_DARWIN)
+endif()
 
 add_executable(benchmark_residual benchmark_residual.c util.c)
 target_include_directories(benchmark_residual PRIVATE
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index f6577467..da556d89 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,16 +1,9 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.0)
 
 option(ENABLE_64_BIT_WORDS "Set FLAC__BYTES_PER_WORD to 8 (4 is the default)" OFF)
 option(WITH_XMMS "Build XMMS plugin" OFF)
 
-check_include_file("iconv.h" HAVE_ICONV_H)
-
-add_compile_definitions(
-    ENABLE_64_BIT_WORDS=$<BOOL:${ENABLE_64_BIT_WORDS}>
-    FLAC__HAS_OGG=$<BOOL:${OGG_FOUND}>
-    WORDS_BIGENDIAN=$<BOOL:${CPU_IS_BIG_ENDIAN}>
-    $<$<BOOL:${HAVE_ICONV_H}>:HAVE_ICONV>
-    $<$<BOOL:${HAVE_SYS_PARAM_H}>:HAVE_SYS_PARAM_H>)
+check_include_file("iconv.h" HAVE_ICONV)
 
 add_subdirectory("libFLAC")
 if(BUILD_CXXLIBS)
diff --git a/src/flac/CMakeLists.txt b/src/flac/CMakeLists.txt
index 3fb2e2f7..6275aca2 100644
--- a/src/flac/CMakeLists.txt
+++ b/src/flac/CMakeLists.txt
@@ -1,12 +1,6 @@
-cmake_minimum_required(VERSION 3.12)
-
 check_include_file("sys/ioctl.h" HAVE_SYS_IOCTL_H)
 check_include_file("termios.h" HAVE_TERMIOS_H)
 
-add_compile_definitions(
-    $<$<BOOL:${HAVE_SYS_IOCTL_H}>:HAVE_SYS_IOCTL_H>
-    $<$<BOOL:${HAVE_TERMIOS_H}>:HAVE_TERMIOS_H>)
-
 add_executable(flac
     analyze.c
     decode.c
diff --git a/src/libFLAC++/CMakeLists.txt b/src/libFLAC++/CMakeLists.txt
index e73ffcb1..71c9629b 100644
--- a/src/libFLAC++/CMakeLists.txt
+++ b/src/libFLAC++/CMakeLists.txt
@@ -18,8 +18,6 @@ check_cxx_source_compiles("
     #endif"
     HAVE_CXX_VARARRAYS)
 
-add_compile_definitions($<$<BOOL:${HAVE_CXX_VARARRAYS}>:HAVE_CXX_VARARRAYS>)
-
 set(SOURCES
     metadata.cpp
     stream_decoder.cpp
diff --git a/src/libFLAC/CMakeLists.txt b/src/libFLAC/CMakeLists.txt
index 17d940bd..b6d59ae3 100644
--- a/src/libFLAC/CMakeLists.txt
+++ b/src/libFLAC/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.0)
 
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "[xX]86(_64)?|(AMD|amd)64|i[346]86")
     option(WITH_AVX "Enable AVX, AVX2 optimizations" ON)
@@ -12,36 +12,25 @@ check_include_file("sys/param.h" HAVE_SYS_PARAM_H)
 set(CMAKE_REQUIRED_LIBRARIES m)
 check_function_exists(lround HAVE_LROUND)
 
-add_compile_definitions(
-    $<$<BOOL:${MSVC}>:_USE_MATH_DEFINES>
-    FLAC__USE_AVX=$<BOOL:${WITH_AVX}>
-    HAVE_LROUND=$<BOOL:${HAVE_LROUND}>
-    $<$<BOOL:${HAVE_CPUID_H}>:HAVE_CPUID_H>
-    $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:FLAC__OVERFLOW_DETECT>)
-
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "[xX]86_64|(AMD|amd)64")
     if(CMAKE_SIZEOF_VOID_P EQUAL 4)
         set(IA32 TRUE)
     endif()
-    add_compile_definitions(
-        FLAC__CPU_X86_64
-        FLAC__ALIGN_MALLOC_DATA)
+    add_definitions(-DFLAC__CPU_X86_64 -DFLAC__ALIGN_MALLOC_DATA)
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "([xX]|i[346])86")
     set(IA32 TRUE)
-    add_compile_definitions(
-        FLAC__CPU_IA32
-        FLAC__ALIGN_MALLOC_DATA)
+    add_definitions(-DFLAC__CPU_IA32 -DFLAC__ALIGN_MALLOC_DATA)
 endif()
 
 include(CheckLanguage)
 check_language(ASM_NASM)
 if(CMAKE_ASM_NASM_COMPILER)
     enable_language(ASM_NASM)
-    add_compile_definitions(FLAC__HAS_NASM)
+    add_definitions(-DFLAC__HAS_NASM)
 endif()
 
 if(NOT WITH_ASM)
-    add_compile_definitions(FLAC__NO_ASM)
+    add_definitions(-DFLAC__NO_ASM)
 endif()
 
 if(IA32)
@@ -106,10 +95,13 @@ target_compile_definitions(FLAC-static PUBLIC FLAC__NO_DLL)
 target_include_directories(FLAC-static INTERFACE
     "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>")
-target_link_libraries(FLAC-static PUBLIC
-    $<TARGET_NAME_IF_EXISTS:win_utf8_io>
-    $<TARGET_NAME_IF_EXISTS:FLAC-asm>
-    $<$<BOOL:${HAVE_LROUND}>:m>)
+target_link_libraries(FLAC-static PUBLIC $<$<BOOL:${HAVE_LROUND}>:m>)
+if(TARGET FLAC-asm)
+    target_link_libraries(FLAC-static PUBLIC FLAC-asm>)
+endif()
+if(TARGET win_utf8_io)
+    target_link_libraries(FLAC-static PUBLIC win_utf8_io>)
+endif()
 if(TARGET Ogg::Ogg-static)
     target_link_libraries(FLAC-static PUBLIC Ogg::Ogg-static)
 elseif(TARGET Ogg::Ogg)
@@ -121,11 +113,16 @@ target_compile_definitions(FLAC PRIVATE FLAC_API_EXPORTS FLAC__USE_VISIBILITY_AT
 target_include_directories(FLAC INTERFACE
     "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
     "$<INSTALL_INTERFACE:${CMAKE_INSTALL_PREFIX}/include>")
-target_link_libraries(FLAC PRIVATE
-    $<TARGET_NAME_IF_EXISTS:Ogg::Ogg>
-    $<TARGET_NAME_IF_EXISTS:FLAC-asm>
-    $<TARGET_NAME_IF_EXISTS:win_utf8_io>
-    $<$<BOOL:${HAVE_LROUND}>:m>)
+target_link_libraries(FLAC PRIVATE $<$<BOOL:${HAVE_LROUND}>:m>)
+if(TARGET FLAC-asm)
+    target_link_libraries(FLAC PUBLIC FLAC-asm>)
+endif()
+if(TARGET win_utf8_io)
+    target_link_libraries(FLAC PUBLIC win_utf8_io>)
+endif()
+if(TARGET Ogg::Ogg)
+    target_link_libraries(FLAC PUBLIC Ogg::Ogg)
+endif()
 set_target_properties(FLAC PROPERTIES
     C_VISIBILITY_PRESET hidden
     VERSION 8.3.0
diff --git a/src/share/getopt/CMakeLists.txt b/src/share/getopt/CMakeLists.txt
index a247336c..1e5f5162 100644
--- a/src/share/getopt/CMakeLists.txt
+++ b/src/share/getopt/CMakeLists.txt
@@ -1,12 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
-
 check_include_file("libintl.h" HAVE_LIBINTL_H)
 check_include_file("string.h" HAVE_STRING_H)
 
-add_compile_definitions(
-    $<$<BOOL:${HAVE_LIBINTL_H}>:HAVE_LIBINTL_H>
-    $<$<BOOL:${HAVE_STRING_H}>:HAVE_STRING_H>)
-
-add_library(getopt STATIC
-    getopt.c
-    getopt1.c)
+add_library(getopt STATIC getopt.c getopt1.c)